Nitrogen (N) and phosphorus (P) are primary indicators of soil nutrients in agriculture. Accurate management these is essential for ensuring food security. High-resolution, multi-spectral remote sensing images can provide crucial information mapping at the field scale. This study compares capabilities ZH-1 Sentinel-2 satellite data, along with different spectral indices, (total N Olsen-P) using...

To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced by variation in both current crop management (e.g. planting dates, fertilizer rates) and soil fertili...

Eutrophication, a major problem in many fresh and brackish waters, is largely caused by nonpoint-source pollution by P from agricultural soils. This lysimeter study examined the influence of P content, physical properties, and sorption characteristics in topsoil and subsoil on P leaching measured during 21 mo in 1-m-long, undisturbed soil columns of two clay and two sandy soils. Total P losses ...

Monitoring soil phosphorus (P) changes under continuous cropping over decades is an important agronomic and environmental issue. The aim was to determine soil P dynamics in the plough layer as a function of cumulative P budgets (Bcum) across extended cropping periods (7, 12, and 17 yr) for four rates of mineral P fertilization. This field experiment was established in 1975 on a slightly alkalin...

The technology of carbon dioxide (CO2) capture and storage (CCS) has provided a new option for mitigating global anthropogenic emissions with unique advantages. However, the potential risk of gas leakage from CO2 sequestration and utilization processes has attracted considerable attention. Moreover, leakage might threaten soil ecosystems and thus cannot be ignored. In this study, a simulation e...

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...

The Water-Fluctuation-Zone (WFZ) of the Three Gorges Reservoir (TGR) has a special combination of aquatic and terrestrial ecological systems that are exposed to human activity. In this work, three kinds of soil were sampled along the Yangzi River in the TGR-WFZ. Our study focused on phosphorus (P) sorption characteristics and the change in inorganic P fractions for soils in alternately waterlog...