कृषि में हरी खाद (green manure) उस सहायक फसल को कहते हैं जिसकी खेती मुख्यत: भूमी में पोषक तत्त्वों को बढ़ाने तथा उसमें जैविक पदाथों की पूर्ति करने के उद्देश्य से की जाती है। प्राय: इस तरह की फसल को इसके हरी स्थिति में ही हल चलाकर मिट्टी में मिला दिया जाता है। हरी खाद से भूमि की उपजाऊ शक्ति बढ़ती है और भूमि की रक्षा होती है।
Green manure crops will offer a huge range of benefits to your soil and future crops. They are grown exclusively for the benefits and not for harvest or grazing. They are commonly used to improve the soil, for organic matter, nutrients or to control weeds.
Rather than harvest or graze the crop, the green manure is left on the soil surface or worked into the soil. Green manures incorporated into a rotation add significant benefits but they are a low cost addition.
They also feed the soil which feeds the plant rather than the other way around. In feeding the soil a green manure crop feeds all the soil organisms and improves the fertility of the soil. A biologically fertile soil grows healthy plants that able to resist disease and fight pests in addition a healthy soil has more drought resistance.
By growing green manures you provide soil microbes with a boost as well as food and an environment they can thrive in. These microbes will convert the nutrients in the green manure into available nutrients for crops. By stimulating these soil organisms and proving a food source, they also convert the unavailable nutrients in the soil into available nutrients. By improving the biological activity in the soil you will also improve the general soil conditions.
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