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According to season, the crops are divided into how many cropping patterns?
Levelling is done after ploughing. Why?
Different materials are used for making plough. Name them.
Besides plough, what are the other agricultural implements used for loosening and turning soil?
Name the machine used for sowing seeds.
The damaged seeds float on the water surface. Give reason.
Give the meaning of the term ‘broadcasting’ with respect to agriculture.
Name one plant of crop that is transplanted from nursery.
Mention the advantages of transplantation of seedlings into main field.
Give the role of manure and fertiliser in the soil.
The plants grow fastest if we add fertilisers in the soil, but if we add manure, plants grow but at slower rate. Give reason.
If excess fertilizer is added to the soil, what can happen?
Does nitrogen fixation help in nutrient enrichment?
In which season, the frequency of irrigation is required at a higher rate?
Name some sources of irrigation.
In which method of irrigation, there is no wastage of water?
Why are unwanted plants harmful? What are they called?
Name the tool used for manual weeding.
What do you understand by the term ‘winnowing’?
The gain seeds are carried out from the chaff with the help of which machine?
Name the government agency which buys food grains from farmers.
Give the other name of milk yielding animals.
Nutritive honey is obtained from which animal?
Is it necessary to remove weeds from the field time to time? Give reason.
The government usually maintain a buffer stock of grains. Why
Write the advantage of using a cultivator.
Organic foods are harmless. Do you agree?
Write the name of the equipment which is used to level the tilled land.
Write the name of a man-made chemical substance that is rich in inorganic nutrients.
Which implement is used for harvesting?
Write two advantages of nitrogen fixation.
Explain the causes for the frequency of irrigation of crops being higher in the summer season.
A farmer was growing only paddy in a particular field for five successive generations. He found that the yield decreases every time. Give reasons and how can this problem be solved?
The harvested grains are stored without drying by a farmer. List the consequences.
Write four differences between threshing and winnowing.
The use of fertilisers should be limited. Why?
Different crops are grown in different crop seasons. Explain this statement with examples.
We use dried neem leaves for storing food grains. Explain.
(a) Rabi season crop and Kharif season crop.
(b) Harvesting and threshing.
A gardener uses manure for better production, what is a manure? Describe the common types of manures. Give the advantages of using them.
Threshing is an important agricultural practice. Explain what is it and how is it done.
What do you mean by weeds? Which methods do farmers use to remove weeds?
Write the traditional and modern methods used for irrigation.