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1. The instrument ‘combine’ is used for. A. Sowing of seeds B. Harvesting the crops C. Threshing D. Both harvesting and threshing
D
List the advantage of manure over fertilizers. (2 points)
a. The water holding capacity of the soil improves by Manure. b. The texture of the soil improves by Manure.
List all the activities performed by the farmers during the cultivation of crops.
Preparation of soil, Sowing, Adding manure and fertilisers, Irrigation, Protecting from weeds, Harvesting, Storage
Identify the implement and mention its uses.
Sickle, Used in harvesting.
Why the depth at which seeds are planted is important?
If the seed is planted too deep then it will not get enough sunlight to germinate. If the seed is planted too shallow then it will not get enough soil support.
Boojho saw that farmers were using seed drill. In which step of agricultural practices, seed drill is used? What is its advantage over traditional method?
Sowing. Seed drill sows the seeds uniformly at proper distances and depths.
What will happen if freshly harvested grains are stored without drying in the sun?
If freshly harvested grains are stored without drying, they may get spoilt or attacked by fungus easily due to moisture, losing their germination capacity.
Name the methods of irrigation shown and write one advantage of each of these methods.
Left: Drip (Uses less water, little wastage) Right Sprinkler (Uniform distribution of water, suitable for all land types)
What precautions should be taken while spraying weedicides?
The farmers should cover their nose and mouth with a piece of cloth during spraying of weedicides. This is because spraying of weedicides may affect the health
If pesticides kill insects and pests, don't they harm the crop plants too?
Yes, it may harm if the quantity is not right. Excess of it can cause pollution and harm the plant and hinder growth.
Name the methods applied for weeding.
Manual, chemical
