Effect of Organic Manure and Phosphorus Fertilization on Wheat Crop in Salt-Affected Soils.

Abstract

Two factorial field experiments on wheat (Var. Msr 2) have been carried out during two successive seasons of (2015 / 2016 and 2016/2017), at Sakha Agric. Res. Station. The factors comprised organic fertilizer rates (0, 10 and 20 m 3 fed-1) and phosphorus fertilizer rates (0, 30 and 45 kg P 2 O 5 fed-1) in four replicates. The soils of the experimental locations is a clay loam in texture and have mean values of EC e = 6.1dS.m-1 , ESP = 8.4 % and pH = 8.15; which indicated moderate effects with salinity and sodicity.The important results could be summarized as follows:(1) organic manuring (as compost) with rates of 10(OM 10) or 20(OM 20) m 3 fed-1 led to higher values of wheat grain and straw yields ,as well as grains-protein content relative to the nonemanured treatment.(2) Phosphorusfertilizationwithrates of 30 and / or 45 kg P 2 O 5 fed-1 have been resulted in better grain and straw yields beside higher values of wheat grains-protein content as compared to the controltreatment (P 0).(3) The interaction treatment of (20 m 3 compost x 45 kg P 2 O 5 fed-1) was the best onewhich recorded the maximum values for the previous studied parameterswith increments of[(79.8 %) S1 , (78.6 %) S2 ] N ; [(69.2 %) S1 ,(100 %) S2 ] P and [(79.9 %) S1 , (78.6 %) S2 ] prot over control treatments (OM 0.0 × P 0.0) and for the two seasons, respectively.(4) The co-fertilization of organic manure along with Pfertilization enhanced many biochemical reactions which have beenincreased the availability of phosphate ions and subsequent increment in P-relative efficiencies of P-fertilizer, which have been led to higher wheat yields.