Wheat Response To Some Macro-and Micronutrients Fertilizers in Salt Affected Calcareous Soil

Abstract

Two pot experiments were conducted during the two successive seasons 1994 and 1995 under greenhouse conditions in the Soil Salinity Laboratory, Agric. Res. Center, Alexandria on two cultivars of wheat (Triticum aestivum L.) Var. Sakha 8 and Sakha 69, to investigate the effects of nitrogen and zinc fertilization on growth, yield and nutrients uptake by wheat plants grown under saline conditions in calcareous soil. Two source of nitrogen were applied i.e. ammonium sulphate (NH4)2S04 (21%N) and ammonium nitrate (NH4 N03) (33.5% N) at rate of 100 kg N/Fed., while zinc was applied as zinc sulphate at rates of 0 and 5 kg/fed. (0.4%) (Foliar application). Irrigation water of two levels of salinity beside the control, 400 jlg.mi- 1 (the Nile water as a control), 5000 jlg.ml-1 and 10000]1g.ml-1 I (well water). were used. The results obtained could be summarized as follows : Chemical characterestics : - The pH of the soil after harvesting increased by about 0.25 unit in the soil irrigated with saline water than the soil irrigated with the Nile water. - EC of the soil was promoted by about three-folds in soil irrigated by saline water in comparison with soil irrigated with the Nile water