Fertilizers and Pesticides
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Pesticides are the chemicals usually sprayed for killing pests on the crops. Although they kill the pests, they have a few disadvantages. Choose the correct ones.
Pesticides are poisonous for the plants.
Pesticides pollute soil.
Pesticides are harmful for human consumption.
Pesticides work only in suitable weather.
- organic farming
- mixed farming
- synthetic farming
- artificial farming
Manure enhances the _______ of the soil.
Strength
Texture
Fertility
Vigour
- NPK fertilizer, green manure, goat droppings
- Urea, cow dung, NPK fertilizer
- Vermicompost, poultry wastes, green manure
- Bone meal, fish manure, phosphate fertilizer
_________ is used to avoid the disadvantages of chemical fertilizers.
Organic farming
Pesticide
Nitrogen
Inorganic farming
- It increases soil microflora.
- It increases soil fertility.
- It prevents weathering of rocks.
- It increases water holding capacity.
Which of the following is NOT a biopesticide?
Neem Cake
Tobacco Decoction
Bacterial Culture
DDT
Which of the following method(s) can be used to control the growth of weeds in the fields?
Lagoons
Estuaries
Rivers
All of these
Compost prepared by turning farm wastes including animal wastes into manure using earthworms is called vermicompost.
False
True
Traditionally, dried neem leaves are mixed with the grains during their storage. Here, the neem leaves act as________
Neem Leaves
Bio-insecticide
Chemical insecticide
Bio-fertilizer
Flavour enhancer