ABSTRACT In sandy areas of Northern Shaanxi, after potato harvest, there are large areas of soil exposed to wind erosion from winter to spring, leading to degradation of soil quality. Planting cover crops in fallow fields is considered effective to improve soil biological properties; however, there is scarce study on the effect of winter cover crops on fallow soils in this region. In the study lasting from 2017 to 2019, four winter cover crops, i.e., alfalfa (AC), sweetclover (SC), winter […]

An experiment was carried out under greenhouse conditions at the Soil Science Department of the Universidade Federal de Lavras, Minas Gerais, Brazil, to determine critical levels of different phophorus fractions and acid phosphatase activity in bean plants (Phaseolus vulgaris L. cv. Carioca-MG); the relationship between these fractions and the acid phosphatase activity and grain production, and the relationship between acid phosphatase activity determined “in vivo” and “in vitro“. The plants were cultivated on four lowland soils of southern Minas Gerais, […]