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Wheat Fertilization with Special Reference to Soil Properties and Groundwater Composition in Heavy Clay Soil from Egypt

Mashali, Samir and Youssef, Sarvat Moktar and Faizy , Salah E.-D. A. and El-Ramady, H. and Ragab, Sh. (2013) Wheat Fertilization with Special Reference to Soil Properties and Groundwater Composition in Heavy Clay Soil from Egypt. In: Böden – Lebensgrundlage und Verantwortung, 9-12 September, 2013, Rostock.

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Abstract

Egypt is considered to be a heavy user of chemical fertilizers, especially NPK fertilizers. Thus, sustainable NPK-fertilizer management should be considered to minimize nutrient losses to the environment via volatilization or leaching. Therefore, the objectives of this study were to investigate the effect of different levels of NPK fertilization on some soil chemical properties, the chemical composition of groundwater and the yield and yield components of wheat plant under different treatments of NPK. Field experiments were carried out to study the effect of NPK application on soil properties and groundwater quality as well as wheat yield. Groundwater and soil samples were collected after the first, the third irrigation as well as after harvesting from each treatment for chemical analysis. The highest value of soil salinity was 1.64 dS m-1 after wheat harvesting compared to it before planting (1.13 dS m-1). Values of pH after wheat harvesting ranged from 7.39 to 8.01 (7.67 before planting). Concentration of soluble cations in the ground water after harvesting was higher than it before planting. Concerning soluble salts, Na+ and Cl- was the dominate ions in the soil solution and cation concentration had the descending order: Na+ > Ca++ > Mg++ > K+ and anions had the following order: Cl- > SO4-- > HCO3-. The mean values of available N after wheat harvesting ranged from 8 to 19 mg N kg-1 (38 – 42 mg N kg-1 before planting). The highest value of available phosphorus after wheat harvesting was 11 mg P kg-1 (19.4 mg P kg-1 before planting). Available K ranged from 97 to 204 mg K kg-1 compared to it before planting (160 – 210 mg K kg-1). The balance fertilization of NPK (N80P22K50) gave the highest yield of wheat, improving soil fertility and decrease nutrient leaching to ground water. The grain yield of wheat was highly significant increased with increasing N levels up to 120 kg N acre-1. The highest mean value of grain yield over the two seasons was 3.5 Mg acre-1.

Item Type: Conference or Workshop Item (Contribution to "Reports of the DBG")
Uncontrolled Keywords: wheat, groundwater composition, heavy clay soil, soil salinity, Egypt
Depositing User: DBG
Date Deposited: 21 Oct 2013 15:58
Last Modified: 21 Oct 2013 15:58
URI: http://eprints.dbges.de/id/eprint/956

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