Advertisements
Advertisements
प्रश्न
What are crop's pests? Suggest preventive measures to control pests.
Advertisements
उत्तर
Crop's pests are the organisms that destroy the growing crop plants by causing great economic loss. There are various pests of crop plants such as weeds, insects, mites, rodents, fungi, bacteria, and viruses.
Crop's pests can be controlled by following measures:
(i) Use of pesticides (insecticides, weedicides, and fungicides) that kill the insects, weeds, and fungal pests.
(ii) Use of resistant crop varieties.
(iii) Crop rotation and multiple cropping.
(iv) Clean cultivation.
(v) Sowing crops at optimum time.
APPEARS IN
संबंधित प्रश्न
What are macro-nutrients and why are they called macronutrients?
How do plants get nutrients?
Why are manures and fertilizers used in fields?
Give two limitations of using manure.
Explain the term eutrophication with suitable example
Distinguish between farmyard manure and compost manure.
Why is irrigation essential ?
Write about three main criteria which should be considered while selecting the crops for rotation?
Why are leguminous crops desirable in crop rotation?
Differentiate between the following
Mixed cropping and Intercropping
