Green manure and soil remediation
An N-fixing legume, sour clover has been widely used as green manure. It then is sown in autumn and ploughed in during early spring. It is reported to provide 151-252 kg N/ha and 336 kg N/ha (UC SAREP, 2006). Thanks to its ability to grow on saline soils, sour clover may help reclaim salt-affected soils while providing valuable fodder for livestock (Al Sherif, 2009).