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Influence of P-enriched compost application on economics and P use efficiency of a maize–wheat rotation system
oleh: Abdul Majeed, Shahzada Munawar Mehdi, Abid Niaz, Abid Mahmood, Ehsan-Ul-Haq, Naeem Ahmad, Shahid Javid, Atif Mehmood
Format: | Article |
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Diterbitkan: | KeAi Communications Co., Ltd. 2018-12-01 |
Deskripsi
Crop phosphorus (P) deficiency and poor utilization of added P is a major agricultural problem due to reduced solubility of soil P and rapid fixation or precipitation of applied P fertilizer in alkaline and calcareous soils. The effects of P-enriched compost and single superphosphate (SSP) fertilization on maize and wheat yields and P use efficiency in a maize–wheat rotation system were studied for three years. On a three-year average, grain yields of maize and wheat after application of P-enriched compost were increased by 18% and 24%, respectively, in comparison with sole addition of a recommended dose of SSP fertilizer. P-enriched compost addition to soil increased maize and wheat yields by 12% and 17%, respectively, compared to P fertilizer plus FYM incorporation. Soil available P concentration and P uptake were affected significantly by the addition of P-enriched compost. On average, increases in P recovery, use efficiency, and agronomic efficiency of 52%, 18%, and 43% were recorded in maize and increases of 50%, 23%, and 49% in wheat. P-enriched compost application yielded 30% and 32% higher economic returns in maize and wheat than SSP fertilization alone. Keywords: P-enriched compost, Maize, Wheat, Farmyard manure, P-uptake