World Academy of Science, Engineering and Technology, International Journal of Environmental and Ecological Engineering, 2016
—Rainfall variability is an important feature of semi-arid climates. Climate change is very likel... more —Rainfall variability is an important feature of semi-arid climates. Climate change is very likely to increase the frequency, magnitude, and variability of extreme weather events such as droughts, floods, and storms. The Blue Nile Basin is facing extreme climate change related events such as floods and droughts and its possible impacts on ecosystem, livelihood, agriculture, livestock and biodiversity are expected. Rainfall variability is a threat to food production in the Blue Nile Basin countries. This study investigates the long-term variations and trends of seasonal and annual precipitation over the Blue Nile Basin for 102-year period (1901-2002). Six statistical trend analysis of precipitation was performed with nonparametric Mann-Kendall test and Sen's slope estimator. On the other hands four statistical absolute homogeneity tests: Standard Normal Homogeneity Test, Buishand Range test, Pettitt test and the Von Neumann ratio test were applied to test the homogeneity of the rainfall data, using XLSTAT software, which results of p-valueless than alpha=0.05, were significant. The percentages of significant trends obtained for each parameter in the different seasons are presented. The study recommends adaptation strategies to be streamlined to relevant policies, enhancing local farmers' adaptive capacity for facing future climate change effects.
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Papers by Hany Moustafa
leading to increased demands for water requirements in agricultural practices. In addressing
these challenges, our consideration has centered on the implementation of environmentally
friendly technologies. Lemon yields are diminishing due to the effects of severe climate
change. To counter this decline, farmers resort to the application of nitrogen fertilizers in an
attempt to boost yields. Nevertheless, the excessive use of nitrogen fertilizers has adverse
effects on both plants and the environment. Therefore, two field experiments were carried out
during the years 2021 and 2022 at the experimental farm (in the Nubaria region, Egypt) to
examine the effects of two irrigation methods [conventional drip irrigation and pulse drip
irrigation] and integrated nitrogen fertilization [five organo-mineral N fertilization rates OMN:
OMN1 (100% mineral N + 0% organic N), OMN2 (75% MN + 25% ON), OMN3 (50% MN + 50%
ON), OMN4 (25% MN + 75% ON), and OMN5 (0% MN + 100% ON)] on water productivity, lemon
productivity, and fruit quality. In arid conditions, soil organic matter content, soil microorganisms activity, soil pH, water application efficiency, water stress inside the root zone, lemon
productivity (LP), lemon water productivity (WPLemon), and lemon fruit quality were examined.
The findings showed that the pulse drip irrigation approach improved LP, WPLemon, vitamin C,
and lemon’s total soluble solids. The results also showed how integrated N-fertilization was
important for increasing the proportion of organic component addition. Our findings suggested that applying pulsed drip irrigation coupled with integrating N-fertilization boosted
water productivity, lemon productivity, and fruit quality. The highest outcomes were achieved
when using pulse drip irrigation and 50% organic N + 50% mineral N-fertilizers.
leading to increased demands for water requirements in agricultural practices. In addressing
these challenges, our consideration has centered on the implementation of environmentally
friendly technologies. Lemon yields are diminishing due to the effects of severe climate
change. To counter this decline, farmers resort to the application of nitrogen fertilizers in an
attempt to boost yields. Nevertheless, the excessive use of nitrogen fertilizers has adverse
effects on both plants and the environment. Therefore, two field experiments were carried out
during the years 2021 and 2022 at the experimental farm (in the Nubaria region, Egypt) to
examine the effects of two irrigation methods [conventional drip irrigation and pulse drip
irrigation] and integrated nitrogen fertilization [five organo-mineral N fertilization rates OMN:
OMN1 (100% mineral N + 0% organic N), OMN2 (75% MN + 25% ON), OMN3 (50% MN + 50%
ON), OMN4 (25% MN + 75% ON), and OMN5 (0% MN + 100% ON)] on water productivity, lemon
productivity, and fruit quality. In arid conditions, soil organic matter content, soil microorganisms activity, soil pH, water application efficiency, water stress inside the root zone, lemon
productivity (LP), lemon water productivity (WPLemon), and lemon fruit quality were examined.
The findings showed that the pulse drip irrigation approach improved LP, WPLemon, vitamin C,
and lemon’s total soluble solids. The results also showed how integrated N-fertilization was
important for increasing the proportion of organic component addition. Our findings suggested that applying pulsed drip irrigation coupled with integrating N-fertilization boosted
water productivity, lemon productivity, and fruit quality. The highest outcomes were achieved
when using pulse drip irrigation and 50% organic N + 50% mineral N-fertilizers.