Crop yield improvement. Science CBSE, Class 9: lessons, tests, tasks.

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1.	Need for sustainable agriculture
2.	Crop seasons and approaches to obtain high yield
3.	Crop production management
4.	Manure
5.	Fertilisers and organic farming
6.	Irrigation
7.	Different cropping patterns observed in India
8.	Infestation

1.	Examples of oil seeds and pulses Difficulty: easy	2
2.	Examples of kharif crops Difficulty: easy	3
3.	Macro and micronutrients in plants Difficulty: easy	2
4.	Manure, fertiliser advantages and disadvantages Difficulty: easy	3
5.	Irrigation and its types Difficulty: easy	3
6.	Mixed cropping, intercropping, and crop rotation Difficulty: easy	3
7.	Different revolutions in India and need for improvement in food resources Difficulty: medium	4
8.	Crop seasons and hybridisation Difficulty: medium	4
9.	Methods to improve crop variety and nutrients supplied through soil Difficulty: medium	4
10.	Classification of manures, fertilisers, and organic farming Difficulty: medium	5
11.	Irrigation methods, mixed cropping, and intercropping Difficulty: medium	5
12.	Crop rotation, tanks, droughts Difficulty: medium	5
13.	Weeds, crop diseases, and insect pests Difficulty: medium	5
14.	Crop seasons, Green manure and weeds Difficulty: medium	4
15.	Types of crops, irrigation methods, cropping patterns Difficulty: medium	4
16.	Fertilisers, manures, irrigation methods, and the cropping patterns Difficulty: hard	6
17.	Irrigation practices and cropping patterns observed in India Difficulty: hard	6

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Methodical recommendation

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