Mohamed y. El Ansary

• Professor Emeritus at Benha University

The objective of this study was to analyze the hydraulic performance of low-pressure drip irrigation system on emitter discharge, coefficient of variation, emission uniformity and friction losses. Therefore, a laboratory and field experiments were conducted to assess the hydraulic performance of three drip lateral types [Gr (4 Lh-1 /30cm), Flat-tap...

This experiment was conducted at a private vineyard called El-Wafrah Farm on a desert road to the El-Minya Governorate, Samalout Centre, Egypt. This study aimed to evaluate the effect of ultrasonic treatment (MAXGROW device 4 inches) on the salinization of underground wells in Minya, Egypt, by studying the effect of ultrasound on some physical a...

Clogging is a serious problem in drip irrigation, especially when using saline groundwater; this may cause uneven water distribution. However, efficient and environmentally friendly methods are rarely available for mitigating clogging. In the present study, an innovative and environmentally friendly technology using ultrasonic waves within radio fr...

The present investigation was carried out at the National Irrigation Laboratory of Agricultural Engineering Research Institute (AEnRI), Dokki, Giza, Egypt. This study was performed to investigate the hydraulic performance and clogging ratio of drip irrigation with magnetized water. Magnetized water was created by transferring water through a perman...

The increasing demand of water in the country highlights the need to introduce low-input and water saving technologies for agricultural sustainability and crop production, mainly in semi-arid region. The aim of this study was to investigate the effectiveness of plastic mulch at field scale on improving the performance of surface irrigation in contr...

An experiment was performed for two seasons to test the impact of water stress and drip irrigation lateral arrangements on yield and water productivity of the sunflower crop (seed and oil). Water stress treatments were full crop evapotranspiration 100% ETc (FI 100), 80% ETc (DI 80), 60%ETc (DI 60) and 100-60% ETc (DI 100-60). The DI 100-60 treatmen...

A field study was conducted in 2017-2018 to evaluate the effect of deficit irrigation, air injection and nitrogen fertilization on yield and water productivity of carrot under subsurface drip irrigation system. Experimental treatments were three levels ofdeficit irrigation (60%, 80% and 100%) of full crop water requirements and three types of nitro...

vailability of fresh surface water for irrigation is declining in Egypt and saline ground water is increasingly used for irrigation. A field experiment was carried out on a sandy soil at Dokki protected cultivation experimental site, Agriculture Research Center (ARC), Ministry of Agriculture and Land Reclamation during summer and winter season of 2...

Uneven water distribution, misuse of water and inefficient watering techniques are some of the major causes playing devastation with water security, therefore, the aim of this work was to explore managing drip irrigation of wheat grown under heavy soil conditions as a tool for increasing crop yield, enlarging water productivity and saving irrigatio...

A field experiment was conducted to study the effect of deficit irrigation and drip irrigation laterals arrangements on yield and water productivity of sunflower crop (seed and oil). Deficit irrigation treatments were (FI100), (DI80), (DI60) and (DI100-60) (Full crop evapotranspiration 100% ETc, 80% ETc, 60%ETc and (100 – 60 % ETc respectively). Th...

This research aimed to test and calibrate some water flow measurement devices, which were appropriate for on-farm management in Egypt. To fulfil this purpose three of the conventional water-flow measurement devices (v-notch, rectangular weir and cutthroat flume) were calibrated in the Laboratory of Hydraulics Research Institute in Qanater City (Egy...