“…For example, forage legumes are much effective in improving soil quality than annual grain legumes due to their longer growth period, deeper and larger root system, and greater SNF capacity, enabling them to produce large quantities of organic matter and N in the soils (Bardgett, Mamer, & De Vries, 2014;Dane, Laugale, Lepse, & Siliņa, 2017). The deep and large root system of legumes opens the ways that help increase soil porosity and promote air movement and water drainage even in deeper layers of soils (Bardgett et al, 2014;Dane et al, 2017). In addition, legume root exudates, including carbohydrates and proteins, can increase soil aggregation and reduce soil erosion and crusts (Bardgett et al, 2014;Van Eerd et al, 2013).…”