Drip irrigation or trickle irrigation: Dripping water on to a fraction of the ground surface so as to infiltrate it into the root zone. (<http://www.w3.org/2001/XMLSchema#string>
Adapted from FAO, 1997. Small-scale irrigation for arid zones FAO, 1997. https://www.fao.org/3/w3094e/w3094e05.htm)
An annual clover (Trifolium alexandrinum) cultivated as a forage plant and green-manure crop. This forage crop is used particularly in drier and warmer climates. Berseem clover is important in northern Africa, India, the Middle East and Pakistan. (Adapted from FAOTERM and The pollination of cultivated plants: a compendium for practitioners, FAO, 2018 (http://www.fao.org/3/i9201en/I9201EN.pdf).)
Crimson clover Trifolium incarnatum grows rapidly but has poor drought tolerance, and can add 75–100 pounds/acre of nitrogen to soil. (Brust, Gerald. (2019). Management Strategies for Organic Vegetable Fertility. 10.1016/B978-0-12-812060-6.00009-X.)
Red clover Trifolium pratense is a short-lived perennial that is mildly tolerant of soil acidity and poor drainage; a good stand can add 60–90 pounds/acre of nitrogen to soil. (Brust, Gerald. (2019). Management Strategies for Organic Vegetable Fertility. 10.1016/B978-0-12-812060-6.00009-X.)
White clover Trifolium repens is a low-growing perennial that is tolerant of shade and slightly acidic soil, and a good stand can add 75–110 pounds/acre of nitrogen to soil. (Brust, Gerald. (2019). Management Strategies for Organic Vegetable Fertility. 10.1016/B978-0-12-812060-6.00009-X.)
