IRRIGATION WITH MAGNETICALLY TREATED WATER ON THE EFFICIENCY OF PHOSPHORUS FERTILIZERS AND IMPROVING THE PRODUCTIVITY OF WHEAT PLANTS GROWN ON DIFFERENT SOILS

In most soils of Egypt, the activity of calcium is high and this negatively affects phosphorus availability, thus declining of efficiency of added phosphorus fertilizers, moreover, the country faces water deficit issues. So, a lysimeters trial was executed during two successive seasons to evaluate the performance and productivity of wheat plants grown on different soils i.e., clayey, loamy, sandy and sandy loam as mainplots under two treatments of irrigation water i.e., non-treated water (W1) and magnetically treated water (W2) as subplots (using well water having low quality) and calcium superphosphate additions as sub subplots i.e., 100% of phosphorus recommended dose PRD in mineral form (P1) , 75% of PRD in mineral form + phosphorein (P2) , 75% of PRD in mineral form + compost (P3) and , 75% of PRD in mineral form + phosphorein + compost (P4), where calcium superphosphate represented the P mineral form. Also, the effect of studied treatments on some soil properties was assessed. The main results showed that wheat plants grown on clayey soil had the best performance i.e., chlorophyll content, N, P and K in leaves after 60 days from sowing as well as the best yield and its components compared tothat grown on other soil types, where the loamy soil came in the second-order and calcareous soil came in the third order, while the sandy soil came in the last order. Wheat plants under irrigation with magnetically treated water had performance and productivity better than wheat plants irrigated with non-treated water. Regarding combined additions of PRD and bio and organic fertilizers, the superior treatment was P4 followed by P3 then P2 and lately P1. Differences resulting from interaction among studied treatments were significant, where the superior combined treatment was when wheat plants were grown on alluvial soil and simultaneously were irrigated with magnetically treated water and were treated with 75% of PRD in mineral form + phosphorein + compost.Magnetically treated water positively affected soil fertility expressed in soil content of available N, P and K. Generally, it can be concluded that irrigation with magnetically treated water under bio and organic fertilization may be an effective way for increasing the efficiency of phosphorus fertilizers and improving the productivity of wheat plants grown on different soils.