Improvement In Food Resources


 

Improvement In Food Resources logoSubject: Biology    Exam: Medical Foundation 2 Years

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Important Points

The process of growing of plants (cultivation) in an organised way for obtaining food is called agriculture.
- Green revolution (production of food grains)-
Blue revolution (production of fishes)-
White revolution (production of milk)-
- Yellow revolution (production of oil)
On the basis of seasonal variations, the crops in India can be classified into three main groups
(i)Rabi: It is a winter season crop grown from November to April. Wheat, gram, peas, mustard linseed are rabi crops.
(ii)Kharif : It is a rainy season crop grown from June to October. Paddy, soyabean, pigeon pea maize, cotton, green gram and black gram are kharif crops.(iii)
Zaid : It is summer season crop grown from April to June. Cucumbers, melons. etc. are zaid crops.
The process of crossing plants of two varieties having different traits to produce ahybrid having good traits of both is called hybridization. The crossing may be intervarietal (between different varieties), intergeneric (between different genera), interspecific (between different species of the same genus). The most common type of breeding is intervarietal.

 
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