Water Management under Deficit Irrigation

Yasin, Haqqi I.; Ghazal, Entesar M.

doi:10.33899/rengj.2020.126551.1011

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…The difference between these two threshold creates an early warning system that alerts farmers in advance, assuming parameter limits are exceeded, cannot be met, or are deficient, enabling boundary condition parameters to be monitored effectively online. (Safarina A.B et al, 2017;Yasin & Ghazal, 2020).…”

Section: Introductionmentioning

confidence: 99%

Two Threshold Smart Irrigation System for Increasing Crop Yield

Safarina

Karnisah

Kusnandar

2023

IJG

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The objective of this research is to create an automated irrigation system using two threshold method for rice farming in the Jorolot irrigation area, Cimahi City, West Java Province, Indonesia, which addresses the problem of fluctuating water supply. This issue includes water deficits during the dry season, which threatens rice growth, and excess water during the rainy season, leading to flooding and crop destruction. The method used includes one-dimensional hydraulic modeling of irrigation channels to determine two threshold of channel water level elevation, as well as water availability quantification based on flood, normal, and dry clusters. Furthermore, the system's design involved utilizing the Decision Supporting System (DSS) data communication to monitor and respond to dry or flood events in real time, thereby increasing the system's overall performance. The Jorolot irrigation area, which covers 15.5 hectares, sources its water from the Jorolot Dam, with a primary channel length of 1135 m and a secondary channel length of 536 m. The results showed that the water level in the primary canal for normal conditions is 0.1 m<Ynp<0.6 m. Additionally, the proposed system, which allows for real-time water supply monitoring, can increase rice production from two to three harvests per year.

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Section: Introductionmentioning

confidence: 99%

Two Threshold Smart Irrigation System for Increasing Crop Yield

Safarina

Karnisah

Kusnandar

2023

IJG

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“…In times of scarcity of water and drought, deficit irrigation may result in higher economic rewards than optimizing yields per unit of water for a given crop. Studies prove, however, that this strategy necessitates a precise understanding of a crop's water response, as drought tolerance varies significantly by crop species and stage of growth (e.g., [16][17][18]).…”

Section: Introductionmentioning

confidence: 99%

On Sustainable Consumption: The Implications of Trade in Virtual Water for the EU’s Food Security

2021

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The paper addresses the sustainability of the European Union’s food consumption through a water footprint assessment of selected vulnerable agricultural imports from a two-pronged perspective: (1) the degree of the EU’s dependence on global green water resources embedded in the apparent consumption of selected water-intensive agricultural products and (2) the degree of commitment of countries of origin to sustainability policies. The study argues that the vulnerability of the EU’s agricultural imports to water risks can be estimated based on the amount of green water consumed in producing crops in the countries of origin. The results show that the EU’s consumption of agricultural goods is highly dependent on virtual water imports for all six selected vulnerable agricultural products, from the lowest footprint for bananas (5 mil. km3) to the largest for coffee (69 mil. km3). The analysis also points to a greater concern for quality issues in the countries of origin (56.53%) relative to management (26.52%) and availability issues (16.85%), but the latter are to arise in importance for sustainable production in the years to come. Our conclusions contribute to building up a responsible commitment towards (1) development of environmental policies and the design of practical measures by providing quantitative information that makes problems more clearly defined and tangible, and (2) assessing the outcome of policies and practical measures by understanding their effects on the sustainability of food consumption.

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“…This method is developed based on production, cost and income functions. The production function is a quadratic function that has been proven by other researchers (Sepaskhah and Kashefipour, 1994;Capra et al, 2011;Hughes, 2011;Yasin and ghazal, 2020). In this method, optimum water use is calculated by mathematical analysis and the net income then would be determined.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Irrigation Water Depth under Water Limiting Condition

Kamali

Ansari

Nazari

2021

Preprint

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Water productivity is a major challenge in all agricultural regions and despite the use of pressurized irrigation system, it has not increased as expected in Iran. In addition, in spite of water shortage in Iran, gardeners because of lack of knowledge in economic consequences do not welcome deficit irrigation and irrigation scheduling. To this end, optimization of irrigation water depth in an orange orchard was conducted for two irrigation scheduling methods (with and without 4 days irrigation frequency) under water and land limitations conditions by mathematical analysis of production and cost functions. Then, their effect on the net income by changing in water and fruit price was assessed. Production and cost functions were developed based on two scenarios of applied water including only irrigation water depth and irrigation water depth plus rainfall. According to results, when water is limiting, by using the optimum water depth (Ww), 26% of irrigation water use can be saved that causes only 3–4% decrease in the net income per unit of land and 16% increase in the net income per unit of irrigation water. In addition, when water limiting is serious, using 46% deficit irrigation (Wew) is more useful and resultes the highest water productivity, even though it causes 14–17% decrease in the net income per unit of land. However in water limiting condition, if land is not limiting, using Wew causes the maximum net income per unit of land even 50–60% more than full irrigation. Moreover, using the optimum water depths in water limitation conditions (Ww and Wew) increases the water productivity 26–47% relative to full irrigation. On the other side, the net income and the amount of optimum water depths are not sensitive to the price of water at the present value of water. However, they are highly sensitive to the price of fruit. Furthermore, having an irrigation schedule causes 27% increase in the net income per unit of land. According to positive effects of deficit irrigation and irrigation scheduling on the water productivity and the income, they are highly recommended for addressing water scarcity in Iran.

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Water Management under Deficit Irrigation

Cited by 3 publications

References 9 publications

Two Threshold Smart Irrigation System for Increasing Crop Yield

Two Threshold Smart Irrigation System for Increasing Crop Yield

On Sustainable Consumption: The Implications of Trade in Virtual Water for the EU’s Food Security

Optimization of Irrigation Water Depth under Water Limiting Condition

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