A modelling approach and module for salinity management in drip irrigation

Friedman, Shmulik P.; Gamliel, Alon

doi:10.1016/j.biosystemseng.2021.03.019

Cited by 5 publications

(3 citation statements)

References 46 publications

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“…To prevent the accumulation of harmful salinity in the root zone, it is common to add an irrigation dose (irrigation amount/application depth) beyond the crop evapotranspiration, termed the leaching requirement (LR) (Assouline et al, 2015; Friedman & Gamliel, 2021; Richards, 1954). Excessive watering is also accompanied by higher soil water content, which in most cases benefits the water status of the plants and their growth and economic yield.…”

Section: Leaching Requirement and Irrigation Efficiencymentioning

confidence: 99%

Is the crop evapotranspiration rate a good surrogate for the recommended irrigation rate?

Friedman

2023

Irrigation and Drainage

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Numerous methodologies and technologies of varying levels of sophistication for irrigation rate determination have been developed over the years to address limited irrigation water availability and optimize water productivity. Crop evapotranspiration is currently evaluated mostly according to the FAO56 approach, which has been augmented in recent years with remote sensing of correlated plant indices. When no other information is available, the evapotranspiration rate does give an indication of the optimal irrigation rate in some circumstances. However, in many other circumstances discussed in this short communication, replenishing the soil with crop evapotranspiration either substantially overestimates or underestimates the optimal, physiological (agronomical/economical) irrigation rate. Consequently, this note raises doubts and opens a discussion about the extensive reliance on the evaluated crop (potential or actual) evapotranspiration rate for recommending an optimal irrigation rate (irrigation dose/irrigation amount).

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Section: Leaching Requirement and Irrigation Efficiencymentioning

confidence: 99%

Is the crop evapotranspiration rate a good surrogate for the recommended irrigation rate?

Friedman

2023

Irrigation and Drainage

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“…WAVES and SALTMED take simplified approaches to solute transport, leaving aside exchange between the solution and soil matrix, which is crucial for understanding the effects of soil sodicity. Friedman and Gamliel (2021) applies the DIDAS model (Friedman et al, 2016) to study salinity management for systems using drip irrigation. The model can account for seasonal salt accumulation under changing climate and irrigation conditions, with an evolving root-zone and under differently arranged driplines and drippers.…”

Section: Other Richards Equation-based Modelsmentioning

confidence: 99%

“…Friedman and Gamliel (2021) applies the DIDAS model (Friedman et al., 2016) to study salinity management for systems using drip irrigation. The model can account for seasonal salt accumulation under changing climate and irrigation conditions, with an evolving root‐zone and under differently arranged driplines and drippers.…”

Section: Dynamical Modelsmentioning

confidence: 99%

Review: Modeling the Effects of Salinity and Sodicity in Agricultural Systems

Kramer

Mau

2023

Water Resources Research

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A simple method for evaluating the relative water uptake rate of drip‐irrigated crops

Friedman

2024

Irrigation and Drainage

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Drip irrigation is widely acknowledged for its water use efficiency, yet evaluating relative water uptake rates (RWURs, ratios between the water uptake rates and the irrigation rates) remains pivotal for effective system design and management. This article presents a novel method employing straightforward measurements of wetted soil surfaces around emitters or perpendicular to driplines, both with and without water uptake, emphasizing simplicity and practicality. The proposed method offers valuable insights into agronomic water use efficiency, facilitating the optimization of drip irrigation for both annual and perennial crops. While effective for intensively irrigated crops, the method does have limitations for smaller wetted areas and longer irrigation cycles, depending also upon a reasonable determination of the active root zone depth and the soil capillary length. Despite relying on a simplified water uptake model, the accessibility and cost‐effectiveness of the method render it a valuable tool for assessing RWURs in diverse agricultural settings, contributing to the sustainable utilization of water resources in drip irrigation.

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A modelling approach and module for salinity management in drip irrigation

Cited by 5 publications

References 46 publications

Is the crop evapotranspiration rate a good surrogate for the recommended irrigation rate?

Is the crop evapotranspiration rate a good surrogate for the recommended irrigation rate?

Review: Modeling the Effects of Salinity and Sodicity in Agricultural Systems

A simple method for evaluating the relative water uptake rate of drip‐irrigated crops

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