AgroSphere

AGRES 2010

2010-06-30T12:43:00.004+05:30

The students who completed the research projects in different areas of Agriculture, will be presenting their findings to Judges, academics, professionals, entrepreneurs from a number of private and Govt sector agriculture organizations. Each student had undergone 6 month Research. A booklet containing “Complete Proceedings of 80 research projects” will be released at the opening ceremony, which contains the outcome of each student’s work.

Agrochemicals for extraordinary yield

2010-03-02T10:25:00.005+05:30

CIC Agribusiness is the major Agrochemical suppliers in Sri Lanka.
Don't believe in this video.

Degree in Horticultura

2010-01-24T15:39:00.001+05:30

What can you do with a degree in horticultural science?

AGRES Agricultural Research Symposium of Wayamba University of Sri Lanka

2009-09-23T12:37:00.003+05:30

Agricultural Research Symposium of Wayamba University of Sri Lanka
(AGRES) was initiated in 2001 and 9th version of it was held in
this august. Objectives of AGRES is to promote agriculture research,
provide opportunity to undergraduats to present their findings
with other institutions. Faculty of Agriculture and Plantation
Management of Wayamba University is planning to organize the
10th Agricultural Research Symposium in style next year.

Agricultural Research Symposium "AGRES"

2009-07-29T12:30:00.001+05:30

9th Agricultural Research Symposium of Wayamba University

will be held on 11th & 12th August 2009.

Aquaculture

2009-06-01T10:40:00.001+05:30

Learn bout effective use of water by an Austrian farmer.

Compost for your Garden

2009-05-12T12:32:00.002+05:30

Learn how to make comost for your Garden plants.

Video about Organic Garden Composting from youtube.com
See more videos about Organic Garden Composting

Maize Growers Association

2009-05-10T12:15:00.001+05:30

Video about Maize Growers Association. They explain about
maize cultivation.

How to make Compost

2009-04-10T11:32:00.001+05:30

Making Organic Compost. Compost fertilizer is composed
of aerobic bacteria that are beneficial and growth.

Get the Insight on Your YouTube Video

2009-04-02T20:02:00.002+05:30

New video from youtube. Hope this is useful
for all video publishers.

Organic Farming in USA

2009-03-29T10:55:00.002+05:30

VVH-TV video about Organic Farming
Can It Feed Us?

Let's take a look at US Department of Agriculture.
Background, plans, Goals of Department of Agriculture USA.

Everything you need to know about US Agriculture.

Garden Without Fertilizers and Pesticides

2009-02-27T10:48:00.001+05:30

Go Green In Garden Without Fertilizers, Pesticides.
Fertilizers and Pesticides are dangerous and sometimes
not necessary.

Organic Fertilizers Vs Chemical Fertilizers

2009-02-27T00:53:00.000+05:30

Learn about the difference between organic and
chemical fertilizer.

Organic Fertilizers Vs Chemical Fertilizers
from youtube.com

Alexa Rank

2009-02-13T10:20:00.000+05:30

Video about Alexa Ranking system.

What is el Nino?

2009-02-01T11:21:00.000+05:30

The heat absorbed by the oceans and carried by its currents is constantly being released into the atmosphere. more...

Sustainable Agriculture

2009-02-01T11:09:00.001+05:30

Sustainable Agriculture Agarwood Gaharu.

DNA Replication

2009-01-23T15:09:00.002+05:30

Video tutorials.

DNA Replication Process

Organic fertilizer

2009-01-05T13:26:00.000+05:30

The major concerns in today's Agriculture is the
contamination of soil. The use of chemical fertilizers
and pesticides(කෘමිනාෂක) has caused tremendous
harm to the environment. An answer to this is the biofertilizer,
an environmentally friendly fertilizer now used in most countries.

Alexa Rank

2009-01-04T17:20:00.003+05:30

After I started to blogging in Sinhala. My Alexa
rank reduced. Because my blog traffic reduced
about 20%. Now I'm writing English Sinhala mix
blog posts.

Sinhala bloggers what do you think.

Sinhala blogs and Google Page Rank

2008-12-27T12:27:00.002+05:30

This is my question
Will Sinhala content in a blog(Sinhala text)
reduce the Google Page rank?

Sinhala bloggers what do you think.

Agriculture in Iran

2008-11-15T17:40:00.002+05:30

Iran is a semi Arid (අර්ධ ශුෂ්ක) country, Because
of poor soil and lack of adequate water distribution in
many areas, most of it is not under cultivation.
Only 12% of the total land area is under cultivation.

Nitrogen fixing bacteria

2008-11-07T07:22:00.001+05:30

නයිට්රජන් තිරකිරීමේ බැක්ටීරියා

Azopirillum

They are nitrogen fixing bacteria that lives in
the root cortex of several tropical crops.
Azospirillum stimulate plant growth through
nitrogen fixation and production of growth
subustances like auxins, gibberellins and
cytokinin. 10 to 15% of the required nitrogen
can be met by using Azospirillum biofertilizer.

Mycorrhizae

2008-11-07T07:15:00.001+05:30

මයිකොරයිසා
Most plants depend on their mycorrhizal
association for adequate uptake of nutrients
especially the immobile ions. benefits of Mycorrhizae
include tolerance to drought, high soil temperature,
soil toxins, and extreme Ph levels, as well as
protection against root pathogens.

Biofertilizer

2008-11-07T07:08:00.001+05:30

කොම්පෝස්ට් (ජෛවීය පොහොර)
The major concerns in today's world is the
contamination of soil. The use of chemical fertilizers
(රසායනික පොහොර) and pesticides(කෘමිනාෂක)
has caused tremendous harm to the environment.
An answer to this is the biofertilizer, an environmentally
friendly fertilizer now used in most countries.
Biofertilizers are organisms that enrich the nutrient
quality of soil. The main sources of biofertilizers
are bacteria, fungi, and cynobacteria. The most striking
relationship that these have with plants is symbiosis, in
which the partners derive benefits from each other.
Biofertilizers will help to solve problems such as
chemical run offs from the agricultural fields.

Chromosomal Mutations

2008-11-06T22:51:00.002+05:30

වර්ණදේහ විකෘති
Abnormalities in chromosomal structure are called as
Chromosomal Mutation.

Types of chromosome mutation වර්ණදේහ විකෘති වර්ග

1. Chromosome aberration

2. Chromosomal number alteration

a. Aneuploidy

b. Euploidy

Changes in the chromosomes structure, are most frequently
formed during mitosis(අනූනනය) or meiosis(උනනය).

Rearrangement a certain segment at parts of chromosome.

4 types :

Translocation
Deletion (segmental deletion)
Inversion
Duplication

Translocation : involves a region of a chromosome breaking
off and rejoining either the other end of the same chromosome
or another non-homologous chromosome

Deletion: the lost of one segment containing one or more genes.

Inversion : a region of a chromosome breaks off and rotates
through 180° before rejoining the chromosome.

Duplication : a region of a chromosome becomes duplicated;
an additional set of genes exists.

THREE DOMAIN SYSTEM

2008-11-06T22:48:00.001+05:30

රඡධානි 3 වර්ගීකරණය.

The 3 domain system is a biological classification
introduced by Carl Woese in 1990, that divides cellular
life forms into archaea, bacteria, and eukaryote domains.

This system proposes that a common ancestor cell gave
rise to three different cell types, each representing a domain.
The three domains are the Archaea (archaebacteria), the
Bacteria (eubacteria), and the Eukarya (eukaryotes).
The Eukarya are then divided into 4 kingdoms: Protists,
Fungi, Anamalia, and Plantae.

Back to Agrosphere

2008-10-23T18:13:00.001+05:30

If you can't see the page content in Sinhala, please
download Sinhala Fonts here.

කාලෙකට පස්සෙයි ගෙදර ආවේ, දැන‍ට Subjects 3ක් ඉවරයි,
තව 3ක් තියෙනවා ලියන්න. අද Blog එකට ගිහින් බලද්දි
Comments 10 ක් තිබුනා. මගේ බ්ලොග් එකට ‍ගොඩක් හොද
ප්‍රතිචාර ලැබිල තියෙනවා. ඒ සියලු දෙනාටම බොහොම ස්තූතියි.
ශ්‍රී අකුර ටයිප් කිරිම ගැන තිබුන ප්‍රශ්නය දැන් හරි.

Exam is still on, 3 more subjects to go.

Alexa Rank and Google Page Rank

2008-10-05T22:28:00.002+05:30

My blog has an Alexa Rank of 2 900 000 and a google page rank
of 3/10. It's clear that Google page rank depends on amount of
links and quality content. But it's not clear how alexa.com ranks
sites. Alexa.com says that Alexa rank depend on "amount of
unique visitors". I'm trying to improve my alexa rank. I need to
improve it up to 100 000. What are the good methods to improve it?

මම මේ දවස් වල උත්සහ ගන්නේ මගේ බ්ලොග් එකේ ඇලෙක්සා
ශ්රේණිගත කිරීම ඉහළ නංවා ගන්නයි. ඒ වෙනුවෙන් මම මෙනවද
ගන්න ඕනේ පියවර?

Problems with Sinhala Fonts

2008-10-04T19:42:00.000+05:30

Sinhala typing is very difficult for me. It takes about a hour to type a
one post. There are lot's of mistakes. Still I cant type Sinhala
properly. I don't know how to type Sinhala letter "Sri" and some
other letters. Can someone help?

අකුරු වැරදුනාට ගණන් ගන්න එපා.

Talking about Adsense again

2008-09-25T10:10:00.002+05:30

In Last 4 month my Adsense Ad displaying was disabled because I didn't verify my home address.
I request 3 pin numbers finally I received the PIN. Now I'm Back to Active Blogging again.

Google Adsense PIN Number

2008-09-24T19:46:00.000+05:30

Today I recive Google Adsense PIN Number via standard mail.

Rice Diseases

2008-09-13T14:56:00.001+05:30

Symptoms of affected plants hold the key to an accurate diagnosis of the field problem in question. Symptoms and signs of already recorded rice diseases have been very well described and recorded, and therefore one should use such available literature in relation to present field problem in question. Careful examination should include looking for discoloration, abnormal growth, or wilting of the leaves, storm and insect injuries, lesions, galls or any abnormality on the stem that may result in a disruption in the flow of water or nutrients. Leaf symptoms are often a reflection of root abnormalities; therefore, plants should be carefully dug up and the soil removed from the roots.

Google PageRank

2008-08-31T11:56:00.004+05:30

Add Pagerank checker tool to your website and display the current Google's page rank right on you web pages. get your button here.

This free page rank checking tool is powered by Page Rank Checker service

Google PageRank of my blog is,

Alexa Site Stats Button

2008-08-31T11:41:00.003+05:30

These site stat buttons are showing statistics about your web site or blog. This my blogs Alexa Site Stats Buttons. Get your botton now. Alexa Site rank is important if you sell Ads via your website. Higher "Alexa Site rank" means high traffic. Advertisers Love to Advertise on Sites that has Higer Alexa Rank. Get your Button Here.

Classification of Field Crops in Sri Lanka

2008-08-31T11:16:00.000+05:30

Cereals – Rice, Maize, Sorghum, Millets
Fiber Crops – Cotton, Sunhemp, Kenaf
Grain Legumes – Soybean, Green gram, Black gram, Chickpea,
Narcotics - Tobacco
Sugar Crops – Sugar beet, Sugar cane
Roots and Tubers – Cassava, Ginger, Gingerly, Turmeric, Potato, Alocasia
Vegetables – Carrot,
Oil Crops – Castor, Sun flower, Ground nut, Soybean, Mustad
Fruits – Banana, Passion Fruit, Papaya
Condiments – Chili, Onion, Garlic, Tumeric, Ginger

Classification of Vegetables in Sri Lanka

Up Country Vegetables
Low Country Vegetables
Leafy Vegetables

Classification of Agricultural Crops in Sri Lanka

2008-08-31T11:14:00.000+05:30

Plantation Crops – Tea, Rubber, Coconut
Export Agricultural Crops (Minor) – Clove, Nutmeg, Pepper, Cocoa, Cardamom
Timber Crops – Teak, Jak, Mahogany
Fruit Trees – Banana, Passion Fruit, Papaya
Forest Trees – Teak
Medicinal Plants –
Flower Plants –
Foliage Plants –
Fodder Plants –
Field Crops (Food Crops) -

Agriculture Research Sri Lanka

2008-08-30T13:49:00.003+05:30

Sri Lanka Tea Agriculture

Agriculture Sri Lanka

2008-08-30T13:41:00.003+05:30

Sri Lanka Farming Communities

Sri Lanka Rice farming

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Sri Lanka Royal Botanic Gardens in KANDY

Seeds and chemical use farming has been course for many problems in Sri Lanka for decades. See more about sri Lanka agriculture in YouTube

Cassava cake and more African Food

2008-07-20T11:08:00.002+05:30

cassava cake

Baked Cassava Squares

Natural Cassava and Chocolate Avocado Cake Recipe.

Indigenous Rice Farming in Sri Lanka

2008-07-18T19:56:00.001+05:30

Seeds and chemical use farming has been course for many problems in Sri Lanka.

Impressions of Sri Lanka by Sooriya

SUSTAINABLE RICE FARMING

Google AdSense, YPN & Porn Ads

2008-07-18T19:47:00.002+05:30

A Thread about adult content ads being show within Google AdSense ads on publisher sites.
Read Full Story here.

Tyroo Ads

2008-07-18T19:30:00.001+05:30

Add Tyroo Ads to your website to earn ad revenue. Once you Register with Tyroo, your website can potentially attract ads from advertisers across the globe. Ensuring you of a constant stream of advertising revenue. Also you are not permitted to display ads from the other network on the same page at the same time as Tyroo ads are also displayed on that same page.

Rice Soils of Sri Lanka and their Productivitity

2008-07-13T10:39:00.002+05:30

AGRO ECOLOGICAL ZONES SRI LANKA

In Sri Lanka, rice is grown in diverse environmental and soil conditions. from drought prone areas in the Dry Zone to water logged areas in the Wet Zone , elevation from sea level to mountains of about 3800 m above Mean Sea Level (MSL), temperature ranging from about 170 C in upcountry to about 400C in the semi arid DZ and rainfed to irrigated conditions.
Also, rice growing soils are varying from properties such as texture, drainage, nutritional status and edaphic problems. These soils are in various topographical, pedological and hydrological conditions in various land- forms. Because of this diversity, the average rice yields in these lands are ranging from about 2-8 t/ha.

Agro Ecological Zones in Sri Lanka
Sri Lanka experiences in diverse agro ecological conditions. Based on the amount of rainfall received, the country is divided into 3 major zones:
Dry Zone (DZ) Rainfall <> 2500 mm
Also, the country is further divided into three major elevation zones;
Low Country (LC) 0 - 300 MSL
Mid Country (MC) 300 - 1000 MSL
Up Country (UC) 1000 m and above MSL

Taking into consideration of these two parameters (rainfall and the elevation), seven major Agro Ecological Zones have been identified (LCDZ, LCIZ, LCWZ, MCIZ, MCWZ, UCIZ and UCWZ) in Sri Lanka. These agro ecological zones are further subdivided into 24 Agro Ecological Regions, considering the temperature, amount of rainfall receives and its distribution pattern, soil types and the land form pattern. Of these 24 Agro Ecological Regions, rice is grown in all the Agro Ecological Regions except in WU1, WU2, WU3, IU1 and IU2. There are diverse differences in environmental conditions and inherent problems associated with rice growing fields in each of these agro ecological regions.

More info: www.agridept.gov.lk

www.goviya.com

Wathupalu

2008-07-13T06:38:00.000+05:30

BOTANICAL NAME : Mikania micrantha
FAMILY : Asteraceae
COMMON NAME : Wathupalu
HABIT : Herb

MORPHOLOGICAL CHARACTERS :

Flower is White. Simple opposite leaves are triangular

& with wary edge Axis white turbular acenes dark brown

with Pink papus common in wante places.This is a
perennial plant.

AGRICULTURE IMPORTANCE :

Compete with crops for essential requirements and

reduce the yield. Grows rapidly.

PROPAGATION METHOD : By seeds
METHOD OF CONTROL : Weeding with mammoties,

Slashing, Ploughing & harrowing. Creates a very thick

cover on the ground. Not easy to control.

Main Characteristics of weed seeds

2008-07-09T15:51:00.000+05:30

Produce large number of seeds at once ability of producing millions of seeds at once is very useful in their propagation

Different propagation methods

Sexual propagation

This occurs through seeds weeds particularly the annuals have tremendous seed producing capacity production of a few thousands seeds per plant is common in them. same annual weeds produce one lakh or more seeds per plant usually perennials produce only few seeds

Heen Undupiyaliya

2008-07-09T05:10:00.000+05:30

BOTANICAL NAME : Desmodium triflorum

FAMILY : Fabaceae

COMMON NAME : Heen Undupiyaliya

HABIT : Creepy Herb

MORPHOLOGICAL CHARACTERS : Flowers are bright purple. Sub arial stem
& runners run and spread all over the
land. This herb creeping along the nodes.
Leaves are like conic trilateral. Side is
being consisted of a leaf is attached to the
stalk.

AGRICULTURE IMPORTANCE : Compete with crops for essential
requirements. Valuable Medicine.
Animal Feed. Gives Nitrogen to soil.

PROPAGATION METHOD : By seeds or runners.

METHOD OF CONTROL : By mammoting.

Elusine indica

2008-07-07T23:01:00.000+05:30

BOTANICAL NAME : Elusine indica

FAMILY : Poaceae

COMMON NAME : Bala thana

HABIT : Grass

MORPHOLOGICAL CHARACTERS : Fiboures root system. Leanier leaves are
long & narrow. Roots are spread in to
deep. Flower is Greenish white. AGRICULTURE IMPORTANCE : It absorb water & minerals faster than
other weeds. Very difficult to remove
Because it has a spreaded root system. PROPAGATION METHOD : By Seeds & Runners. METHOD OF CONTROL : Applying weedicides to the land

Removed from Kottu

2008-05-27T11:57:00.002+05:30

My blog is not syndicated in kottu. It is not updated in last 2 months. After few month
I'm Back to Blogging.

GeeGain Ads

2008-05-27T11:38:00.001+05:30

GeeGain is a nice Advertisig program. I start to publish GeeGain ads today. In 2 of my Blogs. Someone comment about geegain in my blog but not here, See it's here, Thanx
Geegain Advertising Program welcome Publishers who have one or more websites. Publishers can select any ad format and they can modified it for suit their website. After finishing it, they can get auto-generated HTML code and they can add it on their web pages. Once it is ok, they can see their own results on their account.

Agroclimate of Sri Laka

2008-03-15T19:46:00.002+05:30

Agroclimate of Sri Laka is my other Agriculture Blog. Nice Site for people who search for
Agriculture content. It has a hgh page rank in google.

Kottu is agood traffic source

2008-03-15T19:41:00.001+05:30

Kottu is agood traffic source. It brings me 50% of my monthly visitors.

Dowload Free PDF eBooks

2008-02-10T11:25:00.000+05:30

Fat loss without fad diets Download Free fitness eBook.
Free MP3 music Downloads of your favorite artist.
Learn How to Manageme Your time. Get Free eBooks.

EBOOKS are on PDF ebook format.

Most Common Rice Diseases in Paddy Fields of Sri Lanka

2008-02-10T08:01:00.000+05:30

Rice Diseases and Causal organism

1. Rice blast - Magnaporthe grisea
2. Rice sheath blight - Rhizoctonia solani
3. Brown spot - Cochiobolus miyabeanus
4. False smut - Ustilaginoidia virens
5. Grain spotting and pecky rice - many fungal species and bacteria
6. Leaf scald - Gerlachia oryzae
7. Narrow Brown Leaf spot - Cercospora janseana
8. Sheath rot - Sarocladium orysae
9. Root knot - Meloidagane spp.
10 Bacterial blight - Xanthomonan campestris pv. oryzae
11.Bacterial leaf streak - Xanthominan campestris PV oryzicola

Rice diseases of economic importance that need careful attention for increased productivity in farmers fields are as follows.

Adsense vs Adster

2008-02-09T16:24:00.000+05:30

I create a poll, Dear Bloggers you can vote for Adsense or Adster. You cant Vote for both.
I think most of you know about Adsense. I tell you what is Adster. You can Visit Adster Site
here. I'm publishing both adster and Adsense Ads. Agroclimate of Sri Lanka is the blog that
I publish Adster Ads. In this blog I'm publishing Adsense for content and Adsense for Search.

Oh Yes! My first Flat Rate Ad Sold

2008-02-03T23:15:00.000+05:30

I start selling Ads on my Agroclimate Blog few months ago. 30th of January is the best day
for me. I already have earn some money by pay per click ads. Adster is better than Adsense.
But in this blog I use Adsense. This is my Agroclimate Blog.

Wayamba University

2008-02-01T21:17:00.000+05:30

Wayamba University Learning Mgt system
Wayamba University Information system

AdSense Blog

2008-02-01T20:17:00.001+05:30

If you want to stay up to date with the latest AdSense announcements and feature releases,
Adsense Blog is the plase to Visit. Read posts written by members of the AdSense team.
Also you can create email alerts.

DL1 Agroecological zone

2008-01-29T21:42:00.001+05:30

DL1 Agroecological zone is one of the high rice yielding zones of Sri Lanka.

Annual rainfall is about 800 mm. Mean temperature is about 30oC . The main great soil groups are RBE and LHG. Drainage classes well drained to poorly drained. Slope range from 0-2%. Rice is mainly grown in moderately to poorly drained soils. During Maha season, all the rice lands are used for rice, but during Yala season imperfectly to poorly drained soils only can used for paddy cultivation under rainfed condition and moderately drain RBE soil needs fair amount of water as supplementary irrigation for a good rice crop. Therefore, these moderately drained lands are suited for other field crops during Yala season. Under good management conditions, 6-8 t/ha paddy yield can be expected during both Maha and Yala seasons. The land form pattern of this region is mainly undulating and the slope varies from 2-8% . Landform ,Rice growing LHG soils are confined to the valley bottoms of the undulating terrain where the slope ranges from 0-2%.

Wayamba University

2008-01-28T23:37:00.003+05:30

I am a student of Wayamba University of SriLanka,Faculty of Agriculture & Plantation Management.I'm an old boy of Thurstan College,Colombo.

Agriculture Sri Lanka

2008-01-28T23:30:00.000+05:30

Agroclimate of Sri Lanka
www.agroclimate.blogspot.com

Environment and Forestry
Agroforestry, Eco Fashion,
www.forestri.blogspot.com

Sri Lankan Agriculture Websites and Blogs

2008-01-28T21:25:00.000+05:30

Sri Lankan Agriculture Websites & weblogs.

Department of Agriculture
www.agridept.gov.lk

Traditional Agriculture in Sri Lanka
goviya.com

Agriculture is differentiated by 24 agro ecological regions
www.fao.org

Agroclimate of Sri Lanka
www.agroclimate.blogspot.com

Sri Lanka Agriculture

2008-01-28T21:20:00.000+05:30

Department of Agriculture
www.agridept.gov.lk

Traditional Agriculture in Sri Lanka
goviya.com

Agriculture is differentiated by 24 agro ecological regions
www.fao.org

How to optimize Adsense For Search,

2008-01-27T11:56:00.000+05:30

It is not easy to find information about Adsense For Search. How to optimize Adsense For Search,
for higher earnnings, is a big question for me? There are very good information about Adsense for
Content on the web and I know how to optimize it. Hay Bloggers! If you know how to optimize Adsense For Search, pls make a comment here.

www.fat.lk

2008-01-18T23:18:00.000+05:30

Are you a Teacher, School or Educational Institute? Find
the best techer you want.
titute

Find a teacher

2008-01-18T22:19:00.000+05:30

Do you want to learn music, dancing or may be you want to pursue your carrier in accounting, engineering.Find a teacher to guide you in the proper direction. Visit www.fat.lk

High Page CRT on Adsense for search

2008-01-13T21:55:00.000+05:30

My Adsense for search page CTR is over 10%. Is this normal. In Last 2 months Page CTR
Jump 2% to 10%. Some say even 2% is high. Will This cause me ban from Adsense. My Adsense
for content's Page CTR is normal. Dear Bloggers! I need your advice. Pls make your comments.

Rice Blast

2008-01-13T20:48:00.000+05:30

Found in both upland and lowland environments blast occurs most often in upland environments in

Sri Lanka

. Water deficiency predisposes the crop to severe infection in all environments. Magnaporthe grisia is the organisum that cause "Rice Blast".

How to manage Rice Blast.

Use of resistant varieties is the first important step in successful disease management program. Application of high amount of nitrogenous fertilizers induces a heavy incidence of blast in disease susceptible varieties irrespective of the supply of phosphorus or potassium.

How to Diagnose rice diseases accurately in the field

2008-01-13T18:40:00.000+05:30

What is a plant disease?

An impairment of the normal physiological functioning of a plant or plant part caused by disease causing agents such as fungi, bacteria, viruses or nematodes. Plant diseases can be spread from an infected plant into a healthy plant.

Numerous disease of rice, caused by fungi, bacteria, viruses and nematode have been recorded in literature. Some diseases occur where ever rice in grown. Some are of both regional and international important, others occur in local areas. Some diseases reach epidemic proportion and causes serious crop losses which others causes only negligible crop losses.

Disease Causal organism

Rice blast - Magnaporthe grisea
Rice sheath blight - Rhizoctonia solani
Brown spot - Cochiobolus miyabeanus
False smut - Ustilaginoidia virens
Grain spotting and pecky rice - many fungal species and bacteria
Leaf scald - Gerlachia oryzae
Narrow Brown Leaf spot - Cercospora janseana
Sheath rot - Sarocladium orysae
Root knot - Meloidagane spp.
Bacterial blight - Xanthomonan campestris pv. oryzae
Bacterial leaf streak - Xanthominan campestris PV oryzicola

During the last 30 years major changes have occurred in the varietal composition of and cultural practices for rice in

Sri Lanka

. Each season the rice crops in farmers fields are affected by many plant disease problems. Effects of plant diseases on rice crop productivity often varies depending on inherent capacity of the variety to withstand the disease condition in question, environmental factors, stage of crop growth, level of soil fertility management and indirect and harmful effects of agrochemicals such as herbicides and other pesticides.

Paddy Bug Damage reduce 3 to 5% of rice yield in the country.

2008-01-13T18:34:00.000+05:30

Sucks the developing grains causing empty or partially filled grains. Both nymphs and adults damage the grains. Damage estimated to reduce 3-5% rice yield in the country.

How to control Rice Gall Midge

2008-01-13T17:30:00.000+05:30

Rice Gall Midge / Orselia oryzae

Diptera: Cecidomyiidae

coleoptern predatory beetle have been identified,
Severity of damage is related to the crop growth stage of attack. The larvae more down between the leaf sheaths until they reach the apical bud or one of the lateral buds. They lacerate the tissues of the bud and feed until pupation. The feeding causes formation of a gall called a "Silver" or "Onion" shoot.Galls terminate the tiller development and hence affect rice yield.

There are two main Control methods,

1. Granular insecticides are recommended for gall midge control. Since farmers use granules after observing damage symptoms it is difficult to obtain a good control with granules.
2. Cultivation of resistant varieties in endemic areas is the most economical method.

Cnaphalocrocis medinalis

2008-01-13T17:25:00.000+05:30

Rice Leaffolders

Lepidoptera: Pyralidae

The caterpillars infest the leaves and feed on the mesophyll. They fasten the edges of a leaf together and live inside the rolled leaf. Feeding reduces productive leaf area that affects plant growth. Cloudy and humid weather, shady locations and high N-fertilizer favor pest build up.

Control measures available

Establish crop at recommended plant spacing
Use recommended dose of N-fertilizer
Monitor crop regularly. ELT
ETL 25% of leaves showing > 50% damage
Use safer IGR for control.

Stenchaetothrips biformis

2008-01-13T17:12:00.000+05:30

Rice Thrips

Thysanoptera: Thripidae

A pest of young rice seedlings. Adult and larvae suck the cell sap from the leaf tissues. Damaged leaves roll inwards along the margins, feeding causes leaf drying resulting poor crop growth. The damage is severe under water stress conditions. Late planted crops are more prone for damage. Short duration traditional rice varieties like Dahanala, Kaluheenati, Kalubalawee are resistant to thrips. Higher trichome density on leaf surface found to be responsible for thrips resistance in rice. Effective control methods available.

Control methods

Submerge infested crops intermittently for 1-2 days.
Drag a wet cloth on the seedlings.
Apply recommended insecticides if difficult to control.
For endemic areas use a recommended seed-dressing formulation.

What is Pubcasting

2008-01-13T07:54:00.000+05:30

Pubcasting is a type of file sharing, Sharing Audio, Video and other files reabout Science and
Technology. Pubcastin websites create's a upto date relationship between University students
and lectures. Users can Upload and Download Experimental video clips. This is a great advantage for students in Developing countries, They can get a real experience of High Technology Laboratory Experiments.

JOVe is the first Pubcasting website. Here few Tags on JovE,
Cellular Biolog

Developmental Biology

Some other Pubcasting Website's.

www.labaction.com
www.scivee.tv
www.dnatube.com

DNATube.com

2008-01-12T23:30:00.000+05:30

Nazzer Ocker Designed this website to share video chips related to Biotechnology.
DNATube.com is a highly accurate visualization of the Bacteriophage T4 based on Cryo-EM datasets of the virus. The scope of the animation is to show the infection
and other things. DANTube is Pubcasting website.

www.jove.com is the first Pubcasting website

2008-01-12T22:50:00.000+05:30

JoVE is the Journal of Visualized Experiments, which focuses on publishing videos of experimental procedures in life sciences.

Bloggers From Vavuniya

2008-01-12T20:26:00.001+05:30

urahan

http://kavithaimathu.blogspot.com/

www.labaction.com is an Indian Pubcasting website

2008-01-12T19:46:00.000+05:30

Human Genetics, Science Projects, Science Experiments
On Lab Action,you can watch and upload videos on human genetics,science projects like biotechnology, DNA structure and many science experiments.

www.scivee.tv Pioneering New Modes of Scientific Dissemination

2008-01-12T19:33:00.001+05:30

National Science Foundation and the San Diego Supercomputer Center at University of California San Diego collaborate to provide video lectures related to Biology.

Add my profile logo to Adsense Search Box

2008-01-07T07:43:00.000+05:30

Add my profile logo to Adsense Search Box. I didnt add site
search to this search box for testing google search only. Hope
this earns. I dont know how mutch is the max that you can earn
from a adsense for search box. Max I earch is about 0.50$.
If anyone earns more than that pls make a comment.
If you know how to opptimise Adsense for Search, Give your
ideas. There are not so many Adsense for search Tips
on the web.

Pennistum parpereum

2008-01-06T21:16:00.000+05:30

BOTANICAL NAME : Pennistum parpereum

FAMILY : Graminae

COMMON NAME : Riti thana

HABIT : Grass

MORPHOLOGICAL CHARACTERS : A perennial grass. Leaves are arranged in
Alternative manner. Fiboures root system.
Grows upto 4 feets. Grows as a shrub.
Flower is Yellowish gold colour.
AGRICULTURE IMPORTANCE : Compete with crops for essential
requirements. Reduce the yeild.

PROPAGATION METHOD : By Seeds

METHOD OF CONTROL : Using herbicides or ploughing. Cutting
& burning.

Some keywords can earn you 50$ per click.

2007-12-30T23:47:00.000+05:30

Yes, Some people say you can earn 50$ to 60$ from
keywords related to Auto Insurance, Life Insurance.
Lot of Adsense publishers know this. Lot of Adsense
publishers add those keywords to their webpages to
be rich. Those tips might not work. There are lot of
sub keywords related to keywords. You need to include
them in your pages. Weeds, Agronomy, Agriculture,
Forestry are my keywords in this blog. Some keywords
earn me more than 1 1/2$. That's inough for me. I dont
know mutch about insurance.

Weeds of Sri Lanka

2007-12-30T13:30:00.000+05:30

Definition for weed

Weeds are undesirable plants growth in an unwanted place or among the crop for same needs such as water,sunlight,nutrients and space and cause economical damage at threshold level.

Weed can be,

1 Non crop plant grows with crop plant

2 Crop plant grows with crop plant

3 Any plant grows in unwanted place

Classification of weed

Weed can be classified on the basis of

1) Morphology

2) Life span habitat

3) Woodiness

4) Harmfulness

5) Grown habit

6) Number of cotyledons

Morphology

Based on external features weeds can be categorized into 3 groups

1 Grasses

2 Sedges

3 Broad leaves

a. Grass

Stem-Cylindrical in shape

Solid nodes

Hollow internodes

Normally called as “culm”

Leaf –Consist of two parts

1. leaf sheaths

2. leaf blade

inflorescence-panicle or raceme grasses are monocots and show more tillering ability

b. sedges

stem-solid

no nodes or internodes present cross section is angular shape

c. broad leaves

stem-solid

rounded in shape

leaves-broad

only this broad leaves has top root system most of broad leaves are decocts

life span

based on life span weeds are categorized in to 3 major groups

i. Annuals-plant which complete life span with one year

ii. Biannual-complete life span with one year

iii. Perennials-take more than years to complete life span

habitat

according to the placement of the weed it can be categorized in to 3 major groups

a) Terrestrial

A plant which grows on the land

b) Epiphyte

A plant which grows on other plant

c) Aquatic

A plant which grows on water

Woodiness

1 Woody – broad leaves

2 Non woody – grass and sedges,some aquatic weeds

Grown habit

Based on growth habit weeds are categorized in to 3 groups

1 Vines

2 Shrubs

3 Trees

Number of cotyledons

Monocotylen
Dicotyledons

50$ per click

2007-12-30T12:08:00.000+05:30

This is my 100th post in this blog. Here read
this how you can earn 5 to 50$ per click. Adsense
can make you rich. You need rich keywords. I'll
post few high paying keywords. Wait.

Before read this post.

Eco Fashion

2007-12-26T07:08:00.000+05:30

Organic Cotton clothes are Soft and comfortable, it's used for almost every type of clothing. Socks, shirts, sweaters, dresses, jackets, sleepwear, sportswear and more.These clothes are environmentally very friendly in every way. Because these clothes will not do any harm in it's production, Use and after use. Recycled Cotton is another more earth friendly choice in cotton clothing.

Unlimited links

2007-12-25T04:13:00.000+05:30

Any blogger would like to get a link to his blog from another
blog. Here's your chance. I'm giving away links.

Unlimited Links!

Read more

Unlimited Christmas Gifts for Kottu Bloggers!

2007-12-25T01:08:00.000+05:30

Any blogger would like to get a link to his blog from another
blog. Here's your chance. I'm giving away links.

Unlimited Links!

If you want a link. Just make a comment on my blog.
This is only a seasonal offer.

Make sure these things when you commenting & making links;

1.) Do not add your URL with no other content.
add some content related to your blog. Do not
add nude links.

2.) Do not create links to adult sites, sites that contain
virus, spyware and other risky programs.

3.) Do not create links to web sites. Link only to weblogs (Blogs).

4.) You can link to your Blog's home page or to your blog's
post pages. Link any page you want. Please feel free to add
some content (add keywords) to your comment. You can
add any amout of content you like. But dont copy past from
other sites.

5.) You can create your comment on any post of this blog.
Not only this post. There are posts related to Computers,
Cricket, Soccer, Fashion, Music, Blogging, Adsense. You can
select a post you like to comment.

6.) You can create multiple links in the same comment. Also you
can create multiple comments. I'm giving you maximum freedom.
But dont spam.

Wal Rubber

2007-12-22T10:23:00.000+05:30

BOTANICAL NAME : Euphorbia heterophylla

FAMILY : Euphorbiaceae

COMMON NAME : Wal Rubber

HABIT : Herb

MORPHOLOGICAL CHARACTERS :
Smooth plant. Top of the plant there is a Panicle. When the plant
is growing the Leaves at the base of the stem of wal Rubber plant is
usually shed. Flower is Yellowish Yellow. When the plant is broken
milky juice comes out.

AGRICULTURE IMPORTANCE :
Compete with crops for essential requirements . Valuable Medicine.

PROPAGATION METHOD : By Seeds

METHOD OF CONTROL :
By mammoting, hand weeding, Weedicids, or land slashing.

Batadulla

2007-12-22T06:43:00.001+05:30

BOTANICAL NAME : Isachne globosa

FAMILY : Poaceae

COMMON NAME : Batadulla

HABIT : Grass

MORPHOLOGICAL CHARACTERS :

leaves are alternatly arranged in the stem. This plant grows upto 1 feet long. It has

inflorensence. Flower is purple.

AGRICULTURE IMPORTANCE :

Compete with crops for essential

PROPAGATION METHOD : By Seeds Branches.

METHOD OF CONTROL : Applying weedicides to the land.

Sudu Pitawakka

2007-12-16T14:34:00.000+05:30

BOTANICAL NAME : Phyllanthus amarus

FAMILY : Euphorbiaceae

COMMON NAME : Sudu Pitawakka

HABIT : Herb

MORPHOLOGICAL CHARACTERS : Height of the plant is about 0.5-1 inch.
Stem is green & often branched. Plant
has a top root system. Flower is Yellowish
white.

AGRICULTURE IMPORTANCE : Compete with crops for essential
requirements. Valuable Medicine.

PROPAGATION METHOD : By Uprooting

METHOD OF CONTROL : By mammoting or land slashing.

Colopo

2007-12-15T21:40:00.000+05:30

BOTANICAL NAME : Calapagonium muconolidae

FAMILY : Leguminaceae

COMMON NAME : Colopo

HABIT : Creeper

MORPHOLOGICAL CHARACTERS : Broad leaves, Trailing, Creeping,
elimbing in the tree.

AGRICULTURE IMPORTANCE : Compete with crops.

PROPAGATION METHOD : By Uprooting

METHOD OF CONTROL : By Hand weeding.

Kapumkeeriya

2007-12-15T05:44:00.000+05:30

BOTANICAL NAME : Euphorbia hiria

FAMILY : Euphorbiaceae

COMMON NAME : Kapumkeeriya

HABIT : Herb

LIFE CYCLE : An annual plant.

MORPHOLOGICAL CHARACTERS :
Flowers are White. Branched up words from the group level.
Reddish or purple edge. When the plant is broken milky
juice comes out.

AGRICULTURE IMPORTANCE :
Compete with crops for essential requirements.

PROPAGATION METHOD : By seeds

METHOD OF CONTROL : By mammoting or harrowing.

Nidikumba

2007-12-15T03:12:00.000+05:30

BOTANICAL NAME : Mimosa pudica
FAMILY : Fabaceae
COMMON NAME : Nidikumba
HABIT : Herb
LIFE CYCLE : Perennial

MORPHOLOGICAL CHARACTERS :

Occationaly climbs up by nodules stem is
Brownish in colour. Covered with hairs.
Prickless leaves. It has more thorns.

AGRICULTURE IMPORTANCE :

Compete with crops for essential
requirements. Can be seen in all parts
of the country.

PROPAGATION METHOD : By seeds
METHOD OF CONTROL : By ploughing & harrowing.

Kadu Pahara

2007-12-14T21:50:00.001+05:30

BOTANICAL NAME : Emilla sonchifolia

FAMILY : Asteraceae

COMMON NAME : Kadu Pahara

HABIT : Herb

LIFE CYCLE : An annual plant.

MORPHOLOGICAL CHARACTERS :
Flowers are pink. Contain lot of branches. Smooth leaves.
1.5 inch long & hairly stem.

AGRICULTURE IMPORTANCE : Compete with crops like Rubber, Coconut
for requirements. Not very harmful.

PROPAGATION METHOD : By seeds or stolons.
METHOD OF CONTROL : By plaughing, hand weeding or mammoting.

Gata Thumba

2007-12-14T21:40:00.000+05:30

BOTANICAL NAME : Leucas zelanicus

FAMILY : Labiatae

COMMON NAME : Gata Thumba

HABIT : Herb

MORPHOLOGICAL CHARACTERS : Flowers are White. Flowers are lingks in
shape. Leave & Stems having small hairs.
Leafs are long and thin. Plant has a top
root system. Contain small fruits.

AGRICULTURE IMPORTANCE : Compete with crops for water, Nutrient &
Space. It has rapped growth rate.

PROPAGATION METHOD : By seeds

METHOD OF CONTROL : By manual weeding or uprooting.

Kurathampala

2007-12-14T21:28:00.001+05:30

BOTANICAL NAME : Amaranthus viridis

FAMILY : Amaranthaceae

COMMON NAME : Kurathampala

HABIT : Herb

LIFE CYCLE : Pale green

MORPHOLOGICAL CHARACTERS :
Flowers are Pale green. Branched errect Herb. Flowering
throughout the year. Top root system.

AGRICULTURE IMPORTANCE :
valuable medicine. Nutritious food contain iron. A harmless weed.

PROPAGATION METHOD : By seeds

METHOD OF CONTROL : By Hand weeding or herbicides.

Wal Anoda

2007-12-14T06:34:00.000+05:30

BOTANICAL NAME : Abutilon indicum
FAMILY : Malvaceae
COMMON NAME : Wal Anoda
HABIT : Errect Herb

MORPHOLOGICAL CHARACTERS :
A Plant grows up to 2-3 feet. It has hard Stem.
Leaves are hairly & smooth. Flowers are Yellow.
AGRICULTURE IMPORTANCE :
Compete with crops for essential requirements.
Very valuable medicine. When field is left unplanted
these plants grow very faster.
PROPAGATION METHOD : By seeds & runners
METHOD OF CONTROL :
By Weeding can use in Nursary. Ploughing & mammoting
can use in field. Adding MCPA, 2,4-D is also a good method.

Polpala

2007-12-08T07:18:00.000+05:30

BOTANICAL NAME : Aerva lantana
FAMILY : Amaranthaceae
COMMON NAME : Polpala
HABIT : Herb

MORPHOLOGICAL CHARACTERS :

A Plant grows up to 1 feet. Leaves are
Ovel shape. White flowers. Normally
it is an erect plant. Branches covered
with cottony hair leaves. Large leaves
can be seen near the base of the plant.
When reaching the top of the plant
Leaves become smaller.

AGRICULTURE IMPORTANCE :

valuable medicine.

PROPAGATION METHOD : By seeds

METHOD OF CONTROL :

By Weeding or mammoting.

Kuppameniya

2007-12-08T07:12:00.000+05:30

BOTANICAL NAME : Acalipha indica
FAMILY : Euphorbiaceae
COMMON NAME : Kuppameniya
HABIT : Herb

MORPHOLOGICAL CHARACTERS :

A Plant grows up to 2 feet. Leaves are attached to

it’s Stem. Alternative flowers are asexual Edges of

leaves, like spike. Flowers are Greenish white.

AGRICULTURE IMPORTANCE :

Compete with crops for essential requirements.

valuable medicine for both humans and animals.

PROPAGATION METHOD : By seeds
METHOD OF CONTROL : By Ploughing & mammoting

Iramusu

2007-12-02T07:32:00.000+05:30

BOTANICAL NAME : Hemidesmus indicus
FAMILY : Asclepiadaceae
COMMON NAME : Iramusu
HABIT : Creeper
LIFE CYCLE : Annual

MORPHOLOGICAL CHARACTERS :

Perennial plant. Twiner root system. Leaves are

green with whitish blotness. Flowers are Green.

Flowers are small and less produced.

AGRICULTURE IMPORTANCE :

Compete with crops for essential requirements.

Very valuable medicine.

PROPAGATION METHOD : By seeds & runners
METHOD OF CONTROL : By herbicides or uprooting.

Kankun

2007-12-02T07:29:00.001+05:30

BOTANICAL NAME : Jpomea aquatica
FAMILY : Convulaceae
COMMON NAME : Kankun
HABIT : Creeper
LIFE CYCLE : Annual

MORPHOLOGICAL CHARACTERS :
Stem is creeping or twisting around another stem.
Very common in wet zone.

AGRICULTURE IMPORTANCE :
Compete with crops for essential requirements
and reduce the yield.

PROPAGATION METHOD : By seeds
METHOD OF CONTROL : Hard weeding.

AgroSphere

AGRES 2010

Agrochemicals for extraordinary yield

Degree in Horticultura

AGRES Agricultural Research Symposium of Wayamba University of Sri Lanka

Agricultural Research Symposium "AGRES"

Aquaculture

Compost for your Garden

Maize Growers Association

How to make Compost

Get the Insight on Your YouTube Video

Organic Farming in USA

Garden Without Fertilizers and Pesticides

Organic Fertilizers Vs Chemical Fertilizers

Alexa Rank

What is el Nino?

Sustainable Agriculture

DNA Replication

Organic fertilizer

Alexa Rank

Sinhala blogs and Google Page Rank

Agriculture in Iran

Nitrogen fixing bacteria

Mycorrhizae

Biofertilizer

Chromosomal Mutations

Types of chromosome mutation වර්ණදේහ විකෘති වර්ග

1. Chromosome aberration

2. Chromosomal number alteration

a. Aneuploidy

b. Euploidy

Changes in the chromosomes structure, are most frequentlyformed during mitosis(අනූනනය) or meiosis(උනනය).

Rearrangement a certain segment at parts of chromosome.

4 types :

Translocation

Deletion (segmental deletion)

Inversion

Duplication

Translocation : involves a region of a chromosome breakingoff and rejoining either the other end of the same chromosomeor another non-homologous chromosome

Deletion: the lost of one segment containing one or more genes.

Inversion : a region of a chromosome breaks off and rotatesthrough 180° before rejoining the chromosome.

Duplication : a region of a chromosome becomes duplicated;an additional set of genes exists.

THREE DOMAIN SYSTEM

Back to Agrosphere

Alexa Rank and Google Page Rank

Problems with Sinhala Fonts

Talking about Adsense again

Google Adsense PIN Number

Rice Diseases

Google PageRank

Alexa Site Stats Button

Classification of Field Crops in Sri Lanka

Classification of Agricultural Crops in Sri Lanka

Agriculture Research Sri Lanka

Agriculture Sri Lanka

Cassava cake and more African Food

Indigenous Rice Farming in Sri Lanka

Google AdSense, YPN & Porn Ads

Tyroo Ads

Rice Soils of Sri Lanka and their Productivitity

Wathupalu

Main Characteristics of weed seeds

Heen Undupiyaliya

Elusine indica

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Most Common Rice Diseases in Paddy Fields of Sri Lanka

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Sri Lankan Agriculture Websites and Blogs

Sri Lanka Agriculture

How to optimize Adsense For Search,

Changes in the chromosomes structure, are most frequently
formed during mitosis(අනූනනය) or meiosis(උනනය).

Translocation : involves a region of a chromosome breaking
off and rejoining either the other end of the same chromosome
or another non-homologous chromosome

Inversion : a region of a chromosome breaks off and rotates
through 180° before rejoining the chromosome.

Duplication : a region of a chromosome becomes duplicated;
an additional set of genes exists.