Effect of P Mineral Fertilization Combined with Compost and Phosphate Solubilizing Bacteria on Wheat Yield and Its Components in Calcareous Soil تأثیر التسمید الفوسفاتی المعدنی والسماد العضوی المصنع والبکتریا المذیبة للفوسفات على محصول القمح ومکوناته فی التربة الجیریة.

Abstract

The current work aimed to evaluate the effect of P mineral fertilization, compost source and phosphate solubilizing bacteria (PSB) on wheat yield Triticum aestivum, L. (var. Msr1) and its components in calcareous soil. A pot experiment was conducted inside a greenhouse at the Faculty of Technology and Development, Zagazig University, Sharkia Governorate, Egypt during 2019/2020 winter season. The experiment was laid out in split split plot design with three replications. The main and sub plots were 0, 15 ، 30 kg P fed-1 and 15 m3 fed-1 compost (C1 , C2) respectively. Sub sub-plots were three rates of 0, 1 and 2 L fed-1 PSB. The results indicated that the values of grain yield (GY), straw yield (SY), biological yield (BY), harvest index (HI), crude protein (CP), N,P and K uptakes, agronomical N use efficiency (ANUE), N recovery efficiency (NRE), agronomical K use efficiency (AKUE), K recovery efficiency (KRE), and physiological K use efficiency (Ph.KUE), increased significantly with increasing P fertilizer level as well as with rising (PSB) rate from 0.0 to 2 L fed-1. Compost1 (C1) was superior to compost2 (C2) in relation to its impact on all studied agronomic traits, (CP), N uptake, (ANUE), (NRE), agronomical P use efficiency (APUE), physiological P use efficiency (Ph.PUE), (AKUE) and (Ph.KUE). The best interaction treatment that achieved the highest values of most studied parameters was (30 kg P fed-1+ C1 + 2 L bio-fertilizer fed-1) flowed by (15 kg P fed-1 + C1 + 2 L) without any significant differences.