2021/01/01 by Kh. H. M. Ibrahim, L. Wang, Ibrahim, Kh.H.M. +9
Agricultural and Biological Sciences · Environmental Science · #Agriculture, Soil, Plant Science #Olsen P #P budget #P fertilizer #Soil Carbon and Nitrogen Dynamics #Soil and Water Nutrient Dynamics #agronomic critical value #article #maize #wheat
paper · doi:10.15159/ar.21.006
openalex publication_date 2021/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
Excessive input of phosphorus (P) in agricultural production and its finite resources is becoming a global concern for sustainable P management. In this study, the annual P input and output were calculated in 27 Fluvo-aquic soil sites of wheat and maize agriculture cropping system in Henan province central-east of China during the period from 1998 to 2016, to quantify soil Olsen P (OP) levels and P budget at the experimental sites and calculate the optimum P fertilizer application. The maize and wheat (Triticum aestivum) recorded 14.2 and 13.6 mg kg-1 respectively. The change in soil OP was positively linearly correlated with the P budget (P < 0.01), and an increase of 2.8 mg kg-1 in soil Olsen P for each 100 kg ha-1 of P budget in the 0–20 cm soil layer. Based on ACV of soil OP with P budget and the critical level of soil OP to ACV in the study area for the next five years, the recommended rate model of soil OP for maize and wheat in the study area was determined. The application amount of P fertilizer ought to be in the range of 64–85 kg P ha-1 . This information can help to optimize crop yield, reduce the accumulation of P in soil, and reduce the potential risk of water pollution. More research is needed about the main factors influence on P available (OP).