Monthly Archives: June 2012

Soil & soil forming materials

June 8, 2012
By Krishiworld
soil

SOIL may be defined as a thin layer of earth’s crust which serves as a natural medium for growth of plants. It is the unconsolidated mineral matter that has been subjected to, and influenced by, genetic and environmental factors– parent material, climate, organisms and topography all acting over a period of time. Soil differs...

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Commercial Crops: Oilseed crops & ground nuts (Part 2)

June 8, 2012
By Krishiworld
peanuts-3

DISTRIBUTION, AREA AND PRODUCTION The major groundnut-producing countries of the world are India, China, Nigeria, Senegal, Sudan, Burma and the USA. Out of the total area of 18.9 million hectares and the total production of 17.8 million tonnes in the world, these countries account for 69% of the area and 70% of the production....

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Commercial Crops: Oilseed crops & ground nuts

June 7, 2012
By Krishiworld
20090602_crop_field

OILSEED CROPS OILSEED crops have been the backbone of agricultural economy of India from time immemorial. Today these crops are cultivated on about 16.5 million hectares, with total production of 10 million tonnes. This area constitutes approximately one-tenth of the total cultivated area in India. On the oilseed map of the world, India occupies...

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Plant disease management – Part 2

June 7, 2012
By Krishiworld
mngmt fig17

USE OF RESISTANT CULTIVARS Several types of resistant cultivars are now available. When a variety is more resistant to some race of pathogen than to others, the resistance is called vertical. Vertical resistance can be preferred against pathogens, which do not have many races, or in the host, which is not cultivated throughout the...

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Plant disease management – Part 1

June 6, 2012
By Krishiworld
rhphytop

QUARANTINE :- The best way to control diseases is to exclude them from the area of sphere in which the host plants are being known. This method of exclusion enforced through certain legal measures is commonly known as quarantine. In India, Destructive Insects & Pests Act, was enacted in 1914. Directorate of Plant Protection...

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