scholarly journals Studying the effects of deficit irrigation as an on-farm strategy on carrot yield in arid environment

2018 ◽  
Author(s):  
Kamel Nagaz
Keyword(s):  
Deficit Irrigation ◽  
Arid Environment ◽  
On Farm

scholarly journals Studying the effects of deficit irrigation as an on-farm strategy on carrot yield in arid environment

2017 ◽  
Vol 3 (2) ◽  
pp. 42-50
Author(s):  
Kamel Nagaz ◽  
Fathia El Mokh ◽  
Mohamed Moncef Masmoudi ◽  
Netij Ben Mechlia
Keyword(s):  
Deficit Irrigation ◽  
Arid Environment ◽  
On Farm

Evaluating deficit irrigation scheduling strategies to improve yield and water productivity of maize in arid environment using simulation

2021 ◽  
Vol 249 ◽  
pp. 106812
Author(s):  
Ahmed Attia ◽  
Salah El-Hendawy ◽  
Nasser Al-Suhaibani ◽  
Majed Alotaibi ◽  
Muhammad Usman Tahir ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Water Productivity ◽  
Arid Environment ◽  
Irrigation Scheduling ◽  
Scheduling Strategies

Deficit irrigation improves maize yield and water use efficiency in a semi-arid environment

2021 ◽  
Vol 243 ◽  
pp. 106483 ◽  
Author(s):  
Yufeng Zou ◽  
Qaisar Saddique ◽  
Ajaz Ali ◽  
Jiatun Xu ◽  
Muhammad Imran Khan ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Maize Yield ◽  
Arid Environment ◽  
Use Efficiency ◽  
Semi Arid

Optimizing Fertilizer Use and Practical Rainfall Capture in a Semi-Arid Environment with Variable Rainfall

1993 ◽  
Vol 29 (4) ◽  
pp. 405-415 ◽  
Author(s):  
M. I. Piha
Keyword(s):  
Maximum Yield ◽  
Arid Environment ◽  
Yield Potential ◽  
Financial Return ◽  
Maize Production ◽  
Fertilizer Use ◽  
Flexible System ◽  
High Yields ◽  
On Farm ◽  
Semi Arid

SummaryFertilizer use in the semi-arid tropics is considered risky because of the unreliable rainfall pattern. A flexible system of fertilization was devised which allowed for high yields in wet years, and reduced financial losses in dry years. Relatively immobile nutrients, such as phosphorus, potassium and sulphur, were applied at rates determined from generalized soil properties and the total nutrient uptake required for a crop to achieve its maximum yield potential in a season with average rainfall. Nitrogen was applied as a series of split applications, which were adjusted during the season according to the degree of water stress observed. This approach was tested in on-farm trials for maize production on nutrient-poor sandy soils in three regions of Zimbabwe, and resulted in larger yields and profits than current recommendations, providing an accept able level of financial return. Small further yield increases were possible, at acceptable returns, when these fertilizer practices were combined with the establishment of tied-ridges by ox-drawn implements, 30 days after planting. By careful estimation of yield potential, and appropriate adjustments to soil fertility, this system of soil management could be applied to other cropping situations and other areas with variable rainfall.Uso de fertilizantes para condiciones de precitación variable

Simulation of onion crop behavior under optimized regulated deficit irrigation using MOPECO model in a semi-arid environment

2012 ◽  
Vol 113 ◽  
pp. 64-75 ◽  
Author(s):  
A. Domínguez ◽  
M. Jiménez ◽  
J.M. Tarjuelo ◽  
J.A. de Juan ◽  
A. Martínez-Romero ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Arid Environment ◽  
Regulated Deficit Irrigation ◽  
Semi Arid

Comprehensively Evaluating Soil Nutrients in Spring Wheat (Triticum aestivum) Field under Regulated Deficit Irrigation in an Arid Environment

2013 ◽  
Vol 773 ◽  
pp. 837-843
Author(s):  
Heng Jia Zhang ◽  
Jun Hui Li
Keyword(s):  
Water Deficit ◽  
Soil Nutrients ◽  
Spring Wheat ◽  
Deficit Irrigation ◽  
Comprehensive Evaluation ◽  
Soil Nutrient ◽  
Arid Environment ◽  
Available Nitrogen ◽  
Regulated Deficit Irrigation ◽  
Wheat Field

A field experiment was carried out in 2007 and 2008 growing seasons to explore the comprehensive evaluation of soil nutrients in spring wheat field under regulated deficit irrigation (RDI) in an arid environment. The soil organic matter, soil total and available nitrogen, phosphorus, and potassium in 0~40 cm layer after two years of RDI management were selected as the evaluating factors to determine both the weighing coefficient of each soil nutrient component and the comprehensive evaluation index for soil nutrients (CEISN) using the membership function in fuzzy mathematics. The results showed that the CEISN was higher in all the RDI management than that in the no water deficit control except 3.5% lower in RDI2 over CK. The CEISN improvement was respectively 6.3%, 6.1%, 6.1%, 5.3%, 4.9%, and 3.8% higher in RDI7, RDI4, RDI5, RDI1, RDI3, RDI6 than in CK sequentially. Consequently, after two years of experiment, the optimal water management and sustainable soil nutrient use pattern was maintained in RDI7 due to its maximum CEISN in all the water deficit regulation regimes.

Effect of Regulated Deficit Irrigation on Water Use and Economic Benefit of Processing Tomato (Solanum lycopersicum) in an Arid Environment

2014 ◽  
Vol 926-930 ◽  
pp. 4234-4237
Author(s):  
Heng Jia Zhang ◽  
Ai Cun Wen ◽  
Ji Dong Zhang
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Deficit Irrigation ◽  
Economic Benefit ◽  
Arid Environment ◽  
Full Irrigation ◽  
Regulated Deficit Irrigation ◽  
Water Deficits ◽  
Processing Tomato ◽  
Irrigated Crops

An experiment was conducted to determine the effect of regulated deficit irrigation (RDI) on water use and economic benefit of processing tomato in an arid environment. The results indicated that seasonal total irrigation water applied to processing tomato was significantly (p<0.05) saved by 14.3% to 42.9% under RDI compared to full irrigation. The irrigation water use efficiency (IWUE) of processing tomato was significantly improved with 32.4% and 57.2% in RDI plots respectively subjected to high and low water deficits at seedling as well as 26.1% in RDI plots subjected to low deficit at late fruiting compared with full irrigation, but no difference (p>0.05) occurred between fully irrigated crops and RDI plants subjected to water deficits at full fruiting as well as low deficit at late fruiting. However, in comparison with fully irrigated crops IWUE was significantly reduced with 20.5% and 22.2% in RDI plants both subjected to water deficits at flowering. Compared to full irrigation, the net income was significantly reduced with 11.3% to 45.3% in RDI plots except that subjected to low water deficit at seedling. Therefore, low water deficit RDI at seedling while full irrigation during flowering to late fruiting could be used to effectively reduce irrigation water application and improve IWUE of processing tomato without causing economic benefit reduction in arid areas.

scholarly journals RESPONSE OF SOYBEAN TO DEFICIT IRRIGATION IN THE SEMI-ARID ENVIRONMENT OF WEST-CENTRAL NEBRASKA

2005 ◽  
Vol 48 (6) ◽  
pp. 2189-2203 ◽  
Author(s):  
J. O. Payero ◽  
S. R. Melvin ◽  
S. Irmak
Keyword(s):  
Deficit Irrigation ◽  
Arid Environment ◽  
West Central ◽  
Semi Arid
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