A field experiment was conducted at Sakha, Res. Station during two winter seasons (2017/2018 and 2018/2019), to evaluate the effect of land leveling (Traditional and Laser land leveling) and cut off irrigation (without cutoff and cutoff irrigation) on nitrate losses into drainage water in clay soil as well as yields, N-uptake and irrigation water productivity (PIW) of wheat. Results showed that: Laser land leveling and/or cutoff irrigation led to reduce of irrigation water amount, drain discharge rates and cumulative discharges compared to traditional leveling and/or irrigation.NO3- contents of the soil after N-fertilizer application under Laser land leveling and/or cut off irrigation were higher than traditional leveling and/or irrigation. Laser land leveling and/or cutoff irrigation led to less amount of nitrogen losses in drainage water. The overall average values of NO3- losses were 17.94, 14.20, 12.45 and 8.16 kgfed-1 for traditional leveling with traditional irrigation, traditional leveling with cut off irrigation, Laser leveling with traditional irrigation and Laser land leveling with cut off irrigation, respectively. The corresponding values of nitrogen losses were 4.05, 3.21, 2.81 and 1.84 kgfed-1, respectively. Laser land leveling with or without cut off irrigation led to enhancing yields, N-uptake and PIW of wheat. Laser land leveling application resulted in increasing wheat grain yield by 11.73% and N-uptake by 6.50 kgfed-1 than traditional leveling. Laser land levelling application lead to reducing nitrate losses into drainage water, thereby increased the efficacy of N fertilizers andincreased the wheat productivity. Cut off irrigation reduced the potential for nutrient-N loss through better irrigation.
Soliman, G., El-Ghannam, M., & EL-Samet, R. (2019). Nitrate Translocation Through Clay Soil into Drainage Water as Affected by Land Leveling and Cut off Irrigation under Wheat Cultivation. Journal of Soil Sciences and Agricultural Engineering, 10(10), 597-603. doi: 10.21608/jssae.2019.63258
MLA
G. A. Soliman; M. K. El-Ghannam; Raina M. EL-Samet. "Nitrate Translocation Through Clay Soil into Drainage Water as Affected by Land Leveling and Cut off Irrigation under Wheat Cultivation", Journal of Soil Sciences and Agricultural Engineering, 10, 10, 2019, 597-603. doi: 10.21608/jssae.2019.63258
HARVARD
Soliman, G., El-Ghannam, M., EL-Samet, R. (2019). 'Nitrate Translocation Through Clay Soil into Drainage Water as Affected by Land Leveling and Cut off Irrigation under Wheat Cultivation', Journal of Soil Sciences and Agricultural Engineering, 10(10), pp. 597-603. doi: 10.21608/jssae.2019.63258
VANCOUVER
Soliman, G., El-Ghannam, M., EL-Samet, R. Nitrate Translocation Through Clay Soil into Drainage Water as Affected by Land Leveling and Cut off Irrigation under Wheat Cultivation. Journal of Soil Sciences and Agricultural Engineering, 2019; 10(10): 597-603. doi: 10.21608/jssae.2019.63258
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