scholarly journals Effects of Deficit Irrigation on Yield and Quality of Onion Crop

2016 ◽  
Vol 8 (3) ◽  
pp. 112 ◽  
Author(s):  
David K. Rop ◽  
Emmanuel C. Kipkorir ◽  
John K. Taragon
Keyword(s):  
Water Stress ◽  
Water Use ◽  
Irrigation Water ◽  
Deficit Irrigation ◽  
Water Productivity ◽  
Growth Stages ◽  
Irrigation Water Use Efficiency ◽  
Yield And Quality ◽  
Irrigation Water Use ◽  
Use Efficiency

<p>The broad objective of this study was to test Deficit Irrigation (DI) as an appropriate irrigation management strategy to improve crop water productivity and give optimum onion crop yield. A field trial was conducted with drip irrigation system of six irrigation treatments replicated three times in a randomized complete block design. The crop was subjected to six water stress levels 100% ETc (T100), 90% ETc (T90), 80% ETc (T80), 70% ETc (T70), 60% ETc (T60) and 50% ETc (T50) at vegetative and late season growth stages. The onion yield and quality based on physical characteristics and irrigation water use efficiency were determined. The results indicated that the variation in yield ranged from 34.4 ton/ha to 18.9 ton/ha and the bulb size ranged from 64 mm to 35 mm in diameter for T100 and T50 respectively. Irrigation water use efficiency values decreased with increasing water application level with the highest of 16.2 kg/ha/mm at T50, and the lowest being13.1 kg/ha/mm at T100. It was concluded that DI at vegetative and late growth stages influence yields in a positive linear trend with increasing quantity of irrigation water and decreasing water stress reaching optimum yield of 32.0 ton/ha at 20% water stress (T80) thereby saving 10.7% irrigation water. Onion bulb production at this level optimizes water productivity without significantly affecting yields. DI influenced the size and size distribution of fresh onion bulbs, with low size variation of the fresh bulbs at T80.</p>

Effects of Different Irrigation Amount on Yield and Quality of Greenhouse Tomatoes

2014 ◽  
Vol 580-583 ◽  
pp. 2343-2345
Author(s):  
Zhuang Chen ◽  
Mohmed Abdallah Mohmed Abdalhi
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Acid Content ◽  
Irrigation Amount ◽  
Irrigation Water Use Efficiency ◽  
Titratable Acid ◽  
Yield And Quality ◽  
Irrigation Water Use ◽  
Use Efficiency

In order to determine the proper irrigation amount of summer tomatoes,taking drip irrigation in green house,5 irrigation volume including 990 m3/hm2、1485 m3/hm2、1980 m3/hm2(CK)、2475 m3/hm2、2970 m3/hm2 were set,and the effects of different irrigation amount on the yield and quality of tomato in greenhouse were studied. The results showed that with the increase of irrigation amount,the soluble solid content,titratable acid content,Vc content and irrigation water use efficiency of tomato decreased. In treatment T1, T4, T5 ,yield decreased by 26.3%, 6.5%, 15.8%. In treatment T2 , the yield decreased by 1.9%,while the irrigation water use efficiency increased by 20.8%,and the soluble solids content,titratable acid content and Vc content increased.It is concluded that the optimum irrigation amount is 1485 m3/hm2.

Optimizing mungbean productivity and irrigation water use efficiency through the use of low water- consumption during plant growth stages

2017 ◽  
Vol 40 (04) ◽  
Author(s):  
Fathy S. El-Nakhlawy ◽  
Saleh M. Ismail ◽  
Jalal M. Basahi
Keyword(s):  
Saudi Arabia ◽  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Consumption ◽  
Irrigation Water ◽  
Full Irrigation ◽  
Irrigation Water Use Efficiency ◽  
Irrigation Water Use ◽  
Use Efficiency

This research was conducted during 2014/2015 and 2015/2016 seasonsin the Agricultural Research Station, King Abdulaziz University at Hada Al-Sham region, Saudi Arabia to produce mungbean as a new legume crop in Saudi Arabia using low water consumption through maximizing crop yield with optimizing irrigation water use efficiency under drought stress during vegetative and flowering growth stages.No significant differences were found between the yield and yield components when practicing water stress during vegetative stage compared with full irrigation treatment in the two seasons. MN96 cv. was significantly dominated over NMf cv. in all studied traits except flowering date.The highest IWUE and seed yield/ha were obtained from the MN96 cv. under full irrigation and water stress during vegetative stage without significantly differences between them in the two seasons.

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