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English :
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EFFECT USE OF PULSED DEFICIT DRIP IRRIGATION FOR TOMATO CROP IN GREENHOUSE POWERED BY SOLAR ENERGY
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Arabic :
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تأثير استخدام الري بالتنقيط الناقص النبضي على محصول الطماطم فى الصوب الزراعية تعمل بالطاقة الشمسية
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| Abstract |
The presented study aims to investigate the effect of using two effective irrigation techniques; the pulse-deficit drip irrigation and the deficit irrigation powered by solar energy in a greenhouse. This work studied impact of these factors a tomato soilless productivity, water productivity and of these techniques solar energy productivity. The experimental study was carried out at Tractors and Farm Machinery Research and Test Station, Alexandria Governorate. The results showed that, the pulsed-full drip irrigation at 100% of ETc (FP100) gave the highest yield of 35.8 ton/fed., but the continuous- deficit drip irrigation at 50% of ETc (DC50) gave the lowest yield of 20.4 ton/feddan. The highest water productivity (WP) was 37.1 kg/m3 when using the treatment of (DP50), on the other hand the Continuous-Full drip irrigation at 100% of ETc (FC100) (control treatment) represents the lowest WP of 27.9 kg/m3. Application of pulse-deficit irrigation (DP50) saved 50% of the water irrigation requirements and decreased the total tomato yield per feddan by 34%, but the water productivity increased by 33% compared with continuous-full irrigation (FC100) as control. Treatment of pulse-deficit irrigation (DP50) saved 50% of solar energy consumption and increase energy productivity (908 kg/kWh) by 33% compared to continuous-full irrigation (FC100) as control. The results showed that pulse-deficit drip irrigation technique, decrease tomato yield but increase WP in all treatments. This study recommend apply, pulse-deficit irrigation (DP75) technique results in reducing tomato yield by 3% and increasing water and energy productivity by 29.3 and 29.4% respectively.
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| Publication year |
2021
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| Organization Name |
On farm irrigation and drainage
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| serial title |
Misr J. Ag. Eng. (MJAE)
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| Author(s) from ARC |
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| Publication Type |
Journal
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