Integration of organic and inorganic P sources for improving P use efficiency in different soils
2010
Mujeeb, F. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Rahmatullah (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Akhtar, J. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Ahmad, R. (University of Agriculture, Faisalabad (Pakistan). Dept. of Crop Physiology)
Efficiency of phosphorus in our soils is low. Present investigation was undertaken to assess the effect of organic (green manure (Sesbania), farmyard manure (FYM), poultry manure, press mud) and inorganic (DAP) amendments of P on three different soils. In a green house trial different efficiency fractions (agronomic efficiency (AE), physiological efficiency (PE) and recovery percentage (PR %) of P were calculated. Farmyard manure was added @ 10 g per kg soil and other organic amendments of P were applied with respect to the carbon (C) contents of FYM. Chemical P as DAP was added to supply 35 mg P per kg soil. Treatments were equilibrated in triplicates. The dry matter production, P concentration and P uptake over control, were significantly increased in maize shoot by the integrated application of organic and inorganic P amendments. Regarding evaluation of various efficiency fractions of maize, agronomic efficiency and apparent P recovery rendered statistically more pronounc
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