Shaban, Kh .A.; F. A. Farag and M.A. Baiumy( 2012). Effect Of Different Methods And Levels Of Potassium Application Combined With Organic Fertilization On Wheat Plant Grown On Sandy Loam Saline SoilEgypt . J. of Appl. Sci., 27 (7) 2012 407-421
Abstract: A field experiment was carried out at Graduate Young Project Village (7), Gilbana, El- Qantra Sharke, North Sinai Governorate, during the winter season of 2010 – 2011, to evaluate the effect of the application methods of potassium sulphate combined with or without compost on sandy loam saline soil properties and its wheat productivity (Sakha 93). The rates of the application methods of K treatments were 40, 80 and 120 kg K2O fed-1, while the rates of the spraying method 0.5, 1.0 and 1.5 % K2O fed-1. The addition rates of compost treatment were zero and 5 Mg fed-1.
The obtained results indicated that:
(1) The grains and straw yield and weight of 1000 grains (g) increased with increasing K rates for both two methods combination with compost.
(2) K application methods amended with compost significantly increased N, P, K, and Fe, Mn, and Zn concentration in both straw and grains of wheat plants with decrease soil salinity, except K and Fe concentrations in straw and Mn content in grains of wheat plants.
(3) The effect of the applied two methods treatments of potassium sulphate on the pH values of the studied soils was no significant, opposite trend noticed with EC , particularly which amended with compost compared with the other treatments without compost.
(4) The availability of N, P, K, Fe, Mn and Zn in soil increased with increasing K application rate under the two methods of application, when method combined with compost. From the study found that the best methods to application potassium in saline soil and the production of wheat is a method application soil at 120 kg K2O / fed and the method added foliar spraying the rate of 1.5 K2O% combined with compost at 5 mega grams per fed.
Keywords: (Sandy loam - Saline soil- Potassium application- organic fertilization – Wheat productivity.)
