Podcast
Questions and Answers
Microorganisms may damage or ruin the harvested crops if they are stored without ______.
Microorganisms may damage or ruin the harvested crops if they are stored without ______.
drying
The process of separating grains from the chaff with the help of wind is called ______.
The process of separating grains from the chaff with the help of wind is called ______.
winnowing
The organisms that feed on crops and damage them are called ______.
The organisms that feed on crops and damage them are called ______.
pests
D.M.S. Swaminathan, an eminent Indian ______, played a pivotal role in the Green Revolution.
D.M.S. Swaminathan, an eminent Indian ______, played a pivotal role in the Green Revolution.
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Pesticides should be sprayed in the correct ______, and at an appropriate time.
Pesticides should be sprayed in the correct ______, and at an appropriate time.
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Crops are cut with the help of a ______ or by a machine called a harvester.
Crops are cut with the help of a ______ or by a machine called a harvester.
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Hybridisation is a technique of developing new crop varieties by crossbreeding two different types of ______.
Hybridisation is a technique of developing new crop varieties by crossbreeding two different types of ______.
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Nitrogen is also essential for ______ to carry out many life functions.
Nitrogen is also essential for ______ to carry out many life functions.
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Harvested grains have moisture, so it is important to dry them in the ______ before storage.
Harvested grains have moisture, so it is important to dry them in the ______ before storage.
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The process of converting nitrogen from the air to a usable form is called the ______ of nitrogen.
The process of converting nitrogen from the air to a usable form is called the ______ of nitrogen.
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Study Notes
Crop Production and Management
- The Green Revolution was a significant agricultural transformation that addressed food security issues by increasing crop yields and food production.
- D.M.S. Swaminathan, an Indian agricultural scientist, played a pivotal role in the Green Revolution, developing high-yielding crop varieties and advocating for stable farming practices to improve agricultural productivity and alleviate poverty.
Plant Breeding
- Hybridisation is a technique of developing new crop varieties by crossbreeding two different types of crops to get a new variety having the desired traits of both crops.
- High-yielding crops resistant to diseases are developed by crossbreeding two crops, one with a high yield and the other with disease resistance.
- Examples of hybrid wheat varieties in India include Kalyan Sona and Sonalika.
Nitrogen Cycle
- Nitrogen is essential for plants and is required for the formation of proteins and to carry out many life functions.
- Nitrogen present in the air is converted into a usable form by specialized bacteria in the soil, which is then used by plants.
- The process of converting nitrogen from the air to a usable form is called nitrogen fixation.
Protection from Pests and Diseases
- Pests, such as rats, termites, locusts, and weevils, feed on crops and damage them, and can be controlled by using pesticides and insecticides.
- Pesticides should be sprayed in the correct dosage and at an appropriate time to avoid harm to human health and the environment.
- Fungi, bacteria, or viruses can also damage plants, and can be controlled by using fungicides and other chemicals.
- Pesticides should be used with caution, as they can harm human health and contaminate soil and water.
Harvesting, Threshing, and Winnowing
- Crops are harvested by cutting them with a sickle or a machine called a harvester.
- Threshing is the process of separating grains from the rest of the crop, which can be done by a thresher machine or a combine.
- Winnowing is the process of separating grains from the chaff using wind, and can also be done by a machine.
Storage
- Harvested grains have moisture, so they need to be dried in the sun before storage to prevent attacks by insects, fungi, and bacteria.
- If stored without drying, microorganisms may damage or ruin the crops
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Description
Learn about the different types of pests and diseases that affect crops, and how to control them using pesticides and other methods.
