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Can potassium fertilization, soil amendments and land leveling ameliorate rice production under salt affected soils conditions?

Amer, Megahed and Elhenawy, Ahmed and El-Ramady, Hassan R. (2015) Can potassium fertilization, soil amendments and land leveling ameliorate rice production under salt affected soils conditions? German Soil Science Society, Meeting 2015.

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Abstract

The significance of nutrient and water and its sustainability was and still one of the most emerging issues in agriculture. Therefore, it should be considered the maintenance, improvement and efficiently utilization of nutrient and water resources. In present work, the effect of land leveling, soil amendments including gypsum and/or compost application and K- fertilizer on rice production under salt affected soils conditions have been studied. The results showed that the highest yield of grain and straw of rice was obtained with using K-fertilization, land levelling rate 0.05 % of surface slope in the presence of gypsum plus compost application. Furthermore, this study suggests that, the efficiency of irrigation application increased from about 60 (for control) to 65 and 78 % for land leveling with 0.0 and 0.05 % slope, respectively. That means, the water loss rate from irrigation were 43, 36 and 32 %, respectively using the previous land leveling treatments. Thus, about 17 % from the applied water for irrigation could be saved under 0.05 % slope. On the other hand, the highest decrease rate in soil salinity (EC, dS m-1) and alkalinity (sodium absorption ratio, SAR) was 26 and 20 %, respectively for the traditional land leveling or the farmers’ practices. Therefore, sustainable rice crop production should be managed to overcome the soil salinity and alkalinity under low land rice cultivation, improving soil quality and its fertility.

Item Type: Article
Uncontrolled Keywords: Rice, potassium, gypsum compost, land leveling
Depositing User: Hassan El-Ramady
Date Deposited: 13 Oct 2015 15:58
Last Modified: 13 Dec 2015 16:28
URI: http://eprints.dbges.de/id/eprint/1087

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