Viral and bacterial diseases can be controlled by1, change in the height of crops2. plucking the weeds3. destruction of vectors4. seeds treated with water
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Throwing the seeds at random is called1. transplantation.2. sprinkler3. seed drill4. broadcasting
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The number of furrows made by tractor1. 1 to 22. 3 to 53. 10 to 154. 20 to 25
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What is another name for herbicide?1. Insecticide2. Weedicide3. Fungicide4. D.D.T.
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Essential nutrients like nitrogen, phosphorus and potassium are supplied through the application of1. raw materials2. salt compounds3. chemical manures4. none
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Shape of plough is1. C shape2. V shape3. T shape4. L shape
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Weeds compete with crop plants for1. water2. nutrients3. space4. all