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Microbes in Human Welfare
Biofertilisers and Green Manure
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Microbes in Human Welfare
- 1.23%
Concepts tested
- Leguminous green manure crops
All Questions
2003 AIPMT 1 question
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Which of the following plants are used as green manure in crop fields and in sandy soils : -Green manuring is the growing of a quick-growing crop (usually a legume) and ploughing it into the soil while it is still green. It adds organic matter and, through root nodules, fixed nitrogen to the soil.
Crotalaria juncea (sunn hemp) is a leguminous plant widely used as a green manure crop.
Alhagi camelorum (camel thorn) is a deep-rooted leguminous desert plant that grows in sandy soils and is used to improve sandy soils.
Calotropis, Phyllanthus, Saccharum munja, Lantana and Dichanthium are not leguminous green manures (Lantana is a weed; Azolla, a fern, is a biofertiliser used in rice fields, but it is paired here with a grass).
So Crotalaria juncea and Alhagi camelorum are used as green manure.