Investigating the dynamics and distribution of soil phosphorus (P) fractions can provide a basis for enhancing P utilization by crops. Four treatments from 29-year long-term experiment in black with maize cropping were involved this study: no fertilizer (CK), inorganic nitrogen potassium (NK), nitrogen, phosphorus, (NPK), NPK plus manure (NPKM). We analyzed different layers using modified Hedle...

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...

Thirty-nine soils from northern New South Wales were used to examine the effects of phosphate buffer capacity on (i) the extraction of labile phosphate by four soil tests, (ii) the relationships between the four soil tests, and (iii) the critical level of each soil test required for near-maximum yield of wheat under field conditions. The results confirmed the principle, recently proposed by the...

Soil available P for crops, derived from inputs and regulated by soil chemical, physical biological factors, represents a small fraction of the total content. balance (P input minus output) is potentially good descriptor fluctuations in pool, making it possible to compare experiments that differ management duration. Using data set compiled three long-term NW Italy tested different fertilization...

Larger, and deeper, root systems of new maize varieties, compared to older varieties, are thought to have enabled improved acquisition of soil resources and, consequently, greater grain yields. To compare the spatial distributions of the root systems of new and old maize varieties and their relationships with spatial variations in soil concentrations of available nitrogen (N), phosphorus (P) an...

Numerous field experiments were conducted at a wide range of sites in Arizona from 1988 through 1999 involving phosphate (P) fertilization of cotton (Gossypium spp.). A total of 21 site-years were used to study the effects of P on both Upland (G. hirsutum L.) and Pima (G. barbadense L.) varieties. The purpose of these experiments was to evaluate University of Arizona (UA) soil fertility guideli...

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...

BACKGROUND AND AIMS In China, excessive fertilization has resulted in phosphorus (P) accumulation in most greenhouse soils. Intercropping can improve the efficiency of nutrient utilization in crop production. In this study, pot experiments were performed to investigate the effects of intercropping with potato onion (Allium cepa L. var. aggregatum G. Don) on tomato (Solanum lycopersicum L.) seed...