Crop Production and Management quiz

Which of the following is a rabi crop?

The tool used for removing weeds and loosening the soil is a:

The bacteria living in the root nodules of leguminous plants that fix nitrogen are:

Separating grain from chaff with the help of wind is called:

The irrigation method in which water falls drop by drop at the roots of plants is:

Which of the following is a weedicide?

Kharif crops are sown in:

When seeds are put in water, the damaged seeds:

Grain is stored on a large scale in:

The traditional tool used for harvesting crops by hand is the:

What is a crop? Explain the difference between kharif and rabi crops. (2 marks)

Why is the soil turned and loosened before sowing? (2 marks)

Give two advantages of using a seed drill for sowing. (2 marks)

Why do farmers need to add manure or fertilisers to the soil? (2 marks)

Describe any two traditional methods of irrigation. (2 marks)

How are weeds harmful to crops? Give two methods of controlling them. (2 marks)

What precautions should a farmer take while spraying weedicides? (2 marks)

What is threshing? Name the machine that harvests and threshes in one operation. (2 marks)

What is animal husbandry? (2 marks)

Why should freshly harvested grain be dried before it is stored? (2 marks)

A field of 1 hectare needs 92 kg of nitrogen. Urea contains 46% nitrogen and is sold in 50 kg bags. How much urea, and how many bags, are needed for a field of 1.5 hectares? (3 marks)

The recommended seed rate for wheat is about 100 kg per hectare. A farmer has 3.5 hectares of land and good seeds cost Rs 40 per kg. Find the quantity of seed needed and its cost. (3 marks)

A sprinkler system uses 1200 litres of water per hour. A farmer runs it for 3 hours a day for 10 days. Find the total water used. If flood irrigation would have used 2.5 times as much, how much water was saved? (3 marks)

A farmer harvests 50 quintals of grain. Because of moisture and pests, 8% is lost during storage. How much grain is lost and how much is left? If better storage reduces the loss to 2%, how much grain is saved? (3 marks)

In a trial, wheat grown after a crop of gram gave 3.2 tonnes per hectare, while wheat grown after wheat gave 2.8 tonnes per hectare. Find the percentage increase in yield due to crop rotation, to one decimal place, and explain the reason. (3 marks)

Read the passage and answer the questions. Before sowing, Ramu poured his wheat seeds into a bucket of water and stirred them. After some time, he removed the seeds that were floating and sowed only the seeds that had settled at the bottom. (i) Why did some seeds float? (ii) Why did Ramu sow only the seeds that sank? (iii) Name two characteristics of good quality seeds. (5 marks)

Read the passage and answer the questions. In a dry district of Rajasthan where water is scarce, farmers growing fruit trees and vegetables have shifted from flood irrigation to drip irrigation, while those growing wheat on uneven sandy land use sprinklers. (i) How does drip irrigation work? (ii) Why is the sprinkler system suitable for uneven sandy land? (iii) Give two benefits of these methods compared with flood irrigation. (5 marks)

Read the passage and answer the questions. A farmer used large amounts of urea every season to increase his yield. After some years, the yield started falling, the soil became hard, and the water in a nearby pond turned green with algae. (i) Why did the soil quality decline? (ii) Why did the pond water turn green? (iii) Suggest two practices that would maintain soil fertility without harming the environment. (5 marks)

Read the passage and answer the questions. In Punjab, the festival of Baisakhi is celebrated in April when the wheat crop is ready. Earlier, farmers cut the crop with sickles and separated the grain by beating the stalks or making cattle walk over them; now many use combines. (i) What are harvesting and threshing? (ii) What is a combine and what are its advantages? (iii) Name two other harvest festivals celebrated in India. (5 marks)

Read the passage and answer the questions. In a large government warehouse, grain is stored in silos and in gunny bags piled on wooden platforms. The staff carry out fumigation regularly and keep the warehouse dry. (i) Why are the bags kept on wooden platforms rather than on the floor? (ii) What is fumigation, and why is it done? (iii) What simple method do farmers use at home to protect stored grain from insects? (5 marks)

Draw a flowchart showing the sequence of agricultural practices from preparing the soil to storing the harvested grain. Briefly explain each step and name one tool or machine used in each. (6 marks)

Draw labelled diagrams of a traditional plough and a seed drill. Explain how the soil is prepared and how seeds are sown, and why correct depth and spacing of seeds are important. (6 marks)

Draw a labelled diagram of any one traditional method of irrigation and of a sprinkler system. Explain the sources of irrigation water and why modern methods help conserve water. (6 marks)

Draw a labelled diagram of the root of a leguminous plant showing root nodules. Explain how leguminous plants enrich the soil, compare manure and fertilisers in five points, and explain the importance of crop rotation. (6 marks)

Draw a labelled diagram showing how winnowing is done. Explain harvesting, threshing and winnowing, and describe the methods used to store grain safely at home and on a large scale. (6 marks)