The effect and relative contributions of C P inputs on soil microbial biomass (MBP) accumulation were studied in three long-term fertility experiments with various climate characteristics at Qiyang, Yangling, Wulumuqi. maximum MBP all sites was 47.8 mg kg-1. accumulated per unit (mg kg-1 soil) correlated a 4.91 increase Olsen P. For each surplus (kg ha-1), manure stubble increased by 330, 3.7, ...

The surge of interest in fluorescent pseudomonads was spurred by discoveries that members of this group are capable of increasing plant growth and suppressing disease upon introduction into the soil or rhizosphere (Burr et al., 1978; Kloepper and Schroth, 1981; Olsen and Misaghi, 1982, 1984; Weller and Cook, 1983). These bacteria produce iron chelators (siderophores) in vitro with high stabilit...

Zinc (Zn) deficiency constrains crop yield and quality, but soil factors influencing Zn availability to plants reactions of applied fertilizer are not fully understood. This work is aimed at studying in the use efficiency fertilizers by as affected properties particularly available P. We performed a pot experiment involving four consecutive crops fertilized with sulfate using 36 soils. The cumu...

The permanence of a buried body in soil always induces the formation decomposition island that can serve as significant recording location to understand how persistence clandestine grave affects soil. This study aims analyze elemental exchange from bodies soil, with focus on phosphorus content, and determine effects environmental factors its persistency. experiment was carried out using eleven ...

application of phosphorus (p) fertilizers as solid or liquid fertilizers to soils leads to re-actions of orthophosphate ions with various soil components which remove p from the so-lution phase and convert it to less soluble phosphates. this study was aimed at determin-ing soil properties that affect the rate of phosphate retention in 28 contrasting calcareous soils from different geographical ...

High concentrations of animal production in the United States have increased the concern about the environmental fate of phosphorus (P) in manures. We conducted a growth chamber study to develop phosphorus source coefficients (PSCs) for manures and fertilizers typically land applied and incorporated into calcareous soils of the western United States as well as to determine the potential plant P...

Plant diversification through crop rotation or agroforestry is a promising way to improve sustainability of agroecosystems. Nonetheless, criteria select the most suitable plant communities for agroecosystems facing contrasting environmental constraints need be refined. Here, we compared impacts 24 different on soil fertility across six tropical agroecosystems: either highly weathered Ferralsols...