Effect of phosphorus levels and sources on productivity, nutrient uptake and soil fertility of maize (Zea mays)wheat (Triticum aestivum) cropping system
DOI:
https://doi.org/10.59797/ija.v58i3.4220Keywords:
Biofertilizers, Maize, Rock phosphate, Single super phosphate, WheatAbstract
A field experiment was conducted for two years (2006-07 and 2007-08) at New Delhi during the kharif and rabi seasons on sandy loam soil to assess the effect of single super phosphate and rock phosphate with different lev- els of phosphorus and biofertilizer on maize (Zea mays L.)wheat {Triticum aestivum (L.) emend. Fiori & Paol} cropping system. The results revealed with application of 90 kg P O /ha through single super phosphate and 2 5 biofertilizers, maize recorded higher mean yield attributes, grain yield, straw yield, and N and P uptake over no phosphorus, 90 kg P O /ha through rock phosphate and 45 kg P O /ha through single super phosphate or rock 2 5 2 5 phosphate and no inoculation. Residual effect of 90 kg P O /ha through single super phosphate or 90 kg P O /ha 2 5 2 5 through rock phosphate applied to maize being on par, recorded higher mean yield attributes, grain yield (4.29 t/ ha), straw yield, and N and P uptake in wheat over lower levels of phosphorus irrespective of sources. Direct ap- plication of phosphorus to wheat up to 90 kg P O /ha enhanced the mean yield attributes, grain yield (4.04 t/ha) 2 5 and N and P uptake. Application of biofertilizer recorded higher yield attributes, yield (grain and straw) and N and P uptake in wheat crop over no biofertilizer. Phosphorus balance in soil increased with increase in P fertilization to the system.References
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