PJB-2018-404
Improving phosphorus efficiency and productivity of wheat by application of manure amended phosphate fertilizer
Wasiq Ikram, Muhammad Akhtar and M. Yasin Ashraf
Abstract
Phosphorus (P) efficiency from inorganic fertilizers is very low and major cause of lower crop productivity, thus proper remedy is required for maintaining optimum P supply from soil to ensure higher wheat productivity. Two-years (2015-16 & 2016-17) field trials have shown that application of phosphoric acid (PA) at 54 kg P ha-1 along with farm-yard manure (FYM) produced maximum wheat grain (5159 kg ha-1), 23% higher over its sole application. Phosphorus uptake was increased with the increase in P rates (18, 36, 54 kg P ha-1) which was usually associated to higher grain yield than P concentration in grain. The manure amended inorganic P fertilizers were found more effective in P uptake and grain yield than their sole application. In greenhouse, a similar trend as occurred in field condition was observed for P recovery and biomass production. The manure amended PA (followed by diammonium phosphate) exhibited maximum P derived from applied fertilizer (Pdff = 40.03%) by a 45-day old wheat plant, as determined by 32P labeling technique. Phosphorus recovery efficiency (PRE) and phosphorus agronomic efficiency (PAE) were found lowest at highest P rate (54 kg P ha-1). However, co-amended phosphate fertilizers showed higher PRE and PAE as compared to their sole application. Therefore, manure amended phosphate fertilizers application seemed appropriate to attain higher P availability from soil, improve efficiency of inorganic fertilizers and enhance wheat productivity grown in alkaline calcareous soils
To Cite this article:
Ikram, W., M. Akhtar and M.Y. Ashraf. 2019. Improving phosphorus efficiency and productivity of wheat by application of manure amended phosphate fertilizer. Pak. J. Bot., 51(6): DOI: http://dx.doi.org/10.30848/PJB2019-6(6)
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