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8.Microbes in Human Welfare
medium
Organic farming includes
$I.$ use of biofertilisers and biopesticides
$II.$ crop rotation
$III.$ locally developed pest resistant varieties
Choose the correct option
A
$I$ and $II$
B
$I$ and $III$
C
$II$ and $III$
D
$I, II$ and $III$
Solution
Chemical fertilisers cause pollution of water bodies as well as ground water, besides getting stored in crop plants. Therefore, environmental scientist are pressing for switch over to organic farming. Organic farming is a form of agriculture that relies on techniques such as crop rotation, green manure, compost and biological pest control
Standard 12
Biology
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