Biological nitrogen fixation (BNF) in soybean [Glycine max (L.) Merr.] is an important process to supply (N) for the crop. However, N capacity of varies widely among soils and climatic conditions. The potential purportedly minimum that do not have any prior history cultivation, application inoculum reported as necessary facilitate this process. Rhizobium inocula can be applied at planting promo...

We present the diversity of Asteraceae in Arequipa Region southern Peru, an area strongly influenced by volcanism, which has given rise to different soil types and determined a very wide bioclimatic vegetational zonation. distribution endemisms Peru Arequipa, dry puna. For this purpose, we have used methodology Rivas-Martínez, characteristic soils each collection point, distance localities from...

The large-scale studies of the Lower Don and Taganrog Bay coastal zone were carried out to determine background concentrations polycyclic aromatic hydrocarbons (PAHs) in soils. content 15 priority PAHs was determined by saponification method with HPLC detection varied widely from 77 µg kg−1 16,017 mean median values 1040 406 kg−1, respectively. PAHs’ highest concentration level observed soils R...

Soils are delicate structures, and careless agricultural practices can destroy them. Crop decline resulting from increased soil salinity can be traced back thousands of years to Sumer and Babylonia. There, the original “Fertile Crescent” eventually turned into desert, destroyed by deforestation, unwise planting, and irrigation-induced soil salinity. Such decline in soil productivity also was ev...