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Plant and microbial strategies to improve the phosphorus efficiency of agriculture
Evidence that more P-efficient plants can be developed by modifying root growth and architecture, through manipulation of root exudates or by managing plant-microbial associations such as arbuscular mycorrhizal fungi and microbial inoculants is critically reviewed.
Processes governing phosphorus availability in temperate soils
Phosphorus losses from agricultural soil to water bodies are mainly related to the excessive accumulation of available P in soil as a result of long-term inputs of fertilizer P. Since P is a
Strategies and agronomic interventions to improve the phosphorus-use efficiency of farming systems
Phosphorus (P)-deficiency is a significant challenge for agricultural productivity on many highly P-sorbing weathered and tropical soils throughout the world. On these soils it can be necessary to
The Use of Tracers to Investigate Phosphate Cycling in Soil–Plant Systems
The use of tracers is relevant to study the transformations of phosphorus (P) in the soil–plant system because (a) only a small fraction of the total soil P is rapidly circulating in this system, (b)
Kinetics of microbial phosphorus uptake in cultivated soils
Abstract. Knowledge about the role of microorganisms in P cycling at conditions of constant soil respiration rates and constant size of microbially bound P is lacking. To study the kinetics of
Interference of colloidal particles in the determination of orthophosphate concentrations in soil water extracts
Abstract Accurate determination of orthophosphate (P) in soil solutions is a prerequisite for rigorously assessing soil P availability for plants as well as the potential risk of P transfer to water
Phosphorus status and cycling in native savanna and improved pastures on an acid low-P Colombian Oxisol
On acid low-phosphorus (P) Colombian Oxisols, improved pastures with acid-soil-tolerant grass and legume varieties have increased beef production by a factor of 10 to 15 with only modest P fertilizer
Symbiotic N2 fixation by soybean in organic and conventional cropping systems estimated by 15N dilution and 15N natural abundance
It is shown that at the low to medium %Ndfa, soybeans did not improve the N supply to any system but removed significant amounts of soil N, suggesting high-soil N mineralization and/or low-soils P availability may have limited symbiotically fixed N2 fixation.