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
DOI:10.30848/PJB2019-6(6)
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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