Plants such as sun hemp, guar, clover, vetch, and alfalfa are commonly used for green manure due to their ability to fix nitrogen and their rapid growth. When selecting plants for green manure, factors such as climate suitability, soil type, crop rotation requirements, and the specific nutrient needs of subsequent crops should be considered to maximize the benefits to soil health and crop productivity.
Which plants are commonly used for green manure, and what factors should be considered when selecting them?
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Common plants used for green manure include legumes like clover, vetch, and alfalfa, as well as grasses such as rye and oats. When selecting green manure crops, factors like climate suitability, soil type, nitrogen-fixing ability (for legumes), growth rate, biomass production, and compatibility with crop rotation should be considered. Additionally, plants with deep roots help improve soil structure and nutrient uptake.