Optimal Crop Water Allocation in Case of Drought Occurrence, Imposing Deficit Irrigation with Proportional Cutback Constraint

Homayounfar, Mehran; Hin, Lai Sai; Zomorodian, Mehdi; Sepaskhah, Ali Reza; Ganji, Arman

doi:10.1007/s11269-014-0669-0

Cited by 29 publications

(14 citation statements)

References 30 publications

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“…Moreover, RDI can be combined with some modern irrigation techniques such as sprinkler irrigation (Bielorai 1982), surface drip irrigation (Du et al 2008a;Faci et al 2014), subsurface infiltration (DeLaune et al 2012), and in combination with root-zone nutrient management through fertigation (Chen et al 2011), to increase both water and nutrient use efficiencies. Additionally, the reallocation of water resources and modification of irrigation systems may have a role to play for the improvement of water use in agriculture (Homayounfar et al 2014). …”

Section: Opportunitiesmentioning

confidence: 99%

Regulated deficit irrigation for crop production under drought stress. A review

Chai

Gan

Zhao

et al. 2015

Agron. Sustain. Dev.

401

234

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Agriculture consumes more than two thirds of the total freshwater of the planet. This issue causes substantial conflict in freshwater allocation between agriculture and other economic sectors. Regulated deficit irrigation (RDI) is key technology because it helps to improve water use efficiency. Nonetheless, there is a lack of understanding of the mechanisms with which plants respond to RDI. In particular, little is known about how RDI might increase crop production while reducing the amount of irrigation water in real-world agriculture. In this review, we found that RDI is largely implemented through three approaches: (1) growth stage-based deficit irrigation, (2) partial root-zone irrigation, and (3) subsurface dripper irrigation. Among these, partial root-zone irrigation is the most popular and effective because many field crops and some woody crops can save irrigation water up to 20 to 30 % without or with a minimal impact on crop yield. Improved water use efficiency with RDI is mainly due to the following: (1) enhanced guard cell signal transduction network that decreases transpiration water loss, (2) optimized stomatal control that improves the photosynthesis to transpiration ratio, and (3) decreased evaporative surface areas with partial root-zone irrigation that reduces soil evaporation. The mechanisms involved in the plant response to RDI-induced water stress include the morphological traits, e.g., increased root to shoot ratio and improved nutrient uptake and recovery; physiological traits, e.g., stomatal closure, decreased leaf respiration, and maintained photosynthesis; and biochemical traits, e.g., increased signaling molecules and enhanced antioxidation enzymatic activity.

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Section: Opportunitiesmentioning

confidence: 99%

Regulated deficit irrigation for crop production under drought stress. A review

Chai

Gan

Zhao

et al. 2015

Agron. Sustain. Dev.

401

234

View full text Add to dashboard Cite

show abstract

“…As a vital aspect of water supply systems, water distribution networks represent one of the largest infrastructure assets of industrial society. Optimal water management in irrigation districts assumes a comprehensive knowledge of the frequency and duration with which irrigation water must be applied (Monem and Namdarian, ; Singh, ; Homayounfar et al, ; Kanooni and Monem, ). Water is essential in arid and semi‐arid areas and limited capital must be used in such a manner as to provide maximum benefits.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Canal Water in an Irrigation Network Based on a Genetic Algorithm: A Case Study of the North China Plain Canal System

Yao

Chen

2019

Irrigation and Drainage

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Maximizing the efficiency of water distribution in canals requires clear guidelines and criteria for system design and operation. Studies have shown that optimization models based on a genetic algorithm (GA) provide a reasonable arrangement of canal water allocation times and discharges, which reduces water transportation losses. In this study, a GA was developed and implemented in the North China Plain canal system, which has 24 minor canals and a command area of approximately 1800 ha. The optimization results indicated that the total seepage loss and evapotranspiration in the canal system decreased from 249 000 to 115 000 m3. Furthermore, the total water requirement decreased from 1 170 000 to 1 040 000 m3. This study suggests that revising water delivery schedules could increase water productivity, and reduce water leakage and total water requirements. © 2019 John Wiley & Sons, Ltd.

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“…According to McMichael et al [3], agriculture has depleted natural resources, contributing to water scarcity. To face this problem, strategies have been proposed such as increasing water use efficiency [4], desalination [5,6], water transactions [7,8], use of infrastructure for water storage [9,10], and optimisation of resources [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Multiperiod Optimisation of Irrigated Crops under Different Conditions of Water Availability

Kuschel-Otárola

Rivera

Holzapfel

et al. 2018

Water

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We propose a nonlinear optimisation model which maximises profits by resource allocation on a monthly time scale, considering a monthly crop yield model. The proposed model was applied to six management scenarios (two seasonal and four monthly), nine conditions of water availability, and two situations of resource availability under Chilean conditions. These situations provided the same seasonal amount of resources, but different distributions over time. The model included improvements in water resource management such as water storage and water transactions, being the latter a monthly decision variable that can increase farmers’ profits. According to our results, monthly scenarios gave high profits, even better with appropriate resource distribution. When water costs are high, water transactions allow loss reduction of up to 50%. Regarding labour, the lack of availability is more critical than the wages.

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Optimal Crop Water Allocation in Case of Drought Occurrence, Imposing Deficit Irrigation with Proportional Cutback Constraint

Cited by 29 publications

References 30 publications

Regulated deficit irrigation for crop production under drought stress. A review

Regulated deficit irrigation for crop production under drought stress. A review

Optimization of Canal Water in an Irrigation Network Based on a Genetic Algorithm: A Case Study of the North China Plain Canal System

Multiperiod Optimisation of Irrigated Crops under Different Conditions of Water Availability

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