* URGENT *
1 = What are the different implements used in plugging? Described them.
2 = Write briefly about the advantages and disadvantages of using fertilisers.
3 = Explain about the modern and traditional methods of irrigation.
4 = How are crops protected from pest and diseases?
note:
this is from ch = 1 crop production and management grade = 8
Answers
Answer:
Q1 ans: Before sowing the seeds, it is necessary to loosen and turn the soil in the fields as to break it to the size of the grains which is done with the help of three main implements or tools – plough, hoe and cultivator
Q2ans: 1. They get washed away by water easily and cause pollution. 2. They harm the microbes present in soil.
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Answer Expert Verified
They are nutrient specific.
They are readily absorbed by plants since they are soluble in water.
They are compact and hence easy to transport, store and handle.
They enhance the metabolism.
Q3ans: In sprinkler irrigation method, water is taken from source to the fields through pipes, whereas in surface irrigation methods only 30-45 per cent water reaches the crops. Such loss of water is avoided in sprinkler irrigation method.
Q4 ans: Crop protection encompasses: Pesticide-based approaches such as herbicides, insecticides and fungicides. Biological pest control approaches such as cover crops, trap crops and beetle banks. Barrier-based approaches such as agrotextiles and bird netting.