Saline Groundwater Management and Optimal Cropping Pattern

Kaushal, M. P.; Khepar, S. D.; Panda, Sudhindra N.

doi:10.1080/02508068508686316

Cited by 20 publications

(4 citation statements)

References 5 publications

(2 reference statements)

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“…Based on previous studies (Dinar et al , ; Kaushal et al , ; Singh et al , ) on the development of salt–water production functions, the analysis here was undertaken using quadratic and square root functional forms. The quadratic forms imply that (while holding all other variables constant) an increase in the level of one of the human‐controlled variables results in a change (increase or decrease – depending on the relationship) in the level of the dependent variable up to a certain point.…”

Section: Methodsmentioning

confidence: 99%

Potential Use of Saline Water for Irrigating Shelterbelt Plants in the Arid Region

Meng

Kang

Zhang

et al. 2011

Irrigation and Drainage

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In water-scarcity areas fresh water is allocated with priority to urban areas and agriculture, and ecosystem function benefits are obtained from marginal quality water. Meanwhile the scientific use of saline water needs to quantify the effect of quality and quantity of water on plant growth. A saline irrigation experiment was carried out for two shelterbelt plants, Haloxylon ammodendron Bunge and Caragana karshiskii Kom, during 2007-08 in the arid region of northwest China. Three salt concentrations (3, 7 and 12 g l −1) were considered and irrigation was controlled when soil moisture reached an enacted critical value. Based on the quadratic regressions fitted to the experimental data, the befitting irrigation with the three salt concentrations for H. ammodendron and C. karshiskii respectively were 381 and 295 mm, 290 and 248 mm, 213 and 188 mm, averaged for two years. Two kinds of plant-water-salinity production functions, quadratic and square root functions were employed to describe the relationship between plant biomass increment and quality and quantity of applied saline water. The functions performed well with experimental data and showed a positive marginal productivity with water and a negative marginal productivity with salt for the frontal area. That could be useful for evaluating low-quality water exploitation and RÉSUMÉDans les zones où l'eau est rare, l'eau douce est allouée en priorité aux villes et à l'agriculture pendant que les bénéfices issus des écosystèmes sont obtenus avec de l'eau de qualité médiocre. Alors que l'utilisation de l'eau salée à des fins agricoles requiert encore d'un point de vue scientifique des besoins de quantifier l'effet de la qualité et la quantité d'eau sur la croissance des plantes, une expérience d'irrigation avec des eaux saumâtres a été réalisée pour deux plantes utilisées pour faire des brisevent, respectivement ammodendron Haloxylon Bunge et Caragana karshiskii Kom. Ce travail a été conduit en 2007-08 dans la région aride du nord-ouest de la Chine. Trois concentrations en sels (3, 7 et 12 g l ) ont été examinées et l'irrigation a été déclenchée pour une humidité du sol atteignant une valeur critique donnée. Sur la base des régressions quadratiques ajustées aux données expérimentales, l'irrigation ajustée aux besoins avec les trois concentrations de sel pour ammodendron H. et C. karshiskii étaient respectivement 381 et 295 mm, 290 et 248 mm, 213 et 188 mm, en moyenne pendant deux ans. Deux types de fonctions de production végétale ont été employés pour décrire la relation entre l'accroissement de la biomasse végétale, la dose d'eau salée et sa qualité. Ces fonctions ont donné un bon ajustement aux données expérimentales et élucidé les valeurs trouvées pour la zone frontale (I.E. les zones directement exposées aux vents dominants). Cela pourrait être utile à l'exploitation des eaux de qualité médiocre et à l'estimation de la croissance et du rendement des plantes brise-vent dans le cadre de la planification forestière.

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Section: Methodsmentioning

confidence: 99%

Potential Use of Saline Water for Irrigating Shelterbelt Plants in the Arid Region

Meng

Kang

Zhang

et al. 2011

Irrigation and Drainage

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“…Optimal cropping pattern over a period of 20 years at five discrete stages of reclamation were determined and parametric analysis was done to determine the optimal water resources management policies with regard to canal water diversion and groundwater mixing. Kaushal et al (1985) developed a deterministic LP model, incorporating leaching requirements and the salinity response function of crops, to find out the optimal cropping pattern and optimum use of saline groundwater in a canal command area in India.…”

Section: Management Of Resources In Arid and Semi-arid Regionsmentioning

confidence: 99%

An overview of the optimization modelling applications

Singh

2012

Journal of Hydrology

205

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“…Modeling conjunctive use considering salinity often uses linear programming (LP) (Kaushal et al., 1985; Singh, 2012; Tyagi, 1986, 1988; Tyagi & Narayana, 1981, 1984). These models typically develop optimal uses of land, crop mix, surface water and saline groundwater for irrigation that maximizes annual profit.…”

Section: Introductionmentioning

confidence: 99%

Conjunctive Water Management for Agriculture With Groundwater Salinity

Yao

Lund

Harter

2022

Water Resources Research

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Irrigating with saline water can significantly increase soil salinity due to crop uptake of fresh water while leaving most salts in soil solution, increasing the soil's osmotic potential. Higher osmotic potential in turn decreases the movement of water toward crop roots (Ayers & Westcot, 1985), requiring crops to expend more energy to extract useable water instead of maturing, and thus decreasing crop yields and profits (Allen, 2000). Salts accumulate in soils or in shallow groundwater in arid and semi-arid areas with every cycle of pumping-and-recharge over the irrigation season (Medellín-Azuara et al., 2008;Schoups et al., 2005). Higher evapotranspiration rates and lower precipitation leave salts in the soil, requiring more surface water (also containing salts) to leach soil salinity to groundwater or drainage systems.When most basin groundwater discharge is pumping for overlying irrigation, with little drainage of salt from the basin, salts imported with surface water and leaching in the basin increase groundwater salinity (Pauloo et al., 2021). This transforms conjunctive use of surface water and groundwater for irrigated agriculture as groundwater becomes saline enough to reduce crop yields. Such groundwater salination is common in the southern and western parts of California's San Joaquin Valley. Nearly two million tons of salt accumulate annually in the San Joaquin Valley, where 250,000 acres of irrigated land have been fallowed and 1.5 million acres are potentially salt-impaired (CV-SALTS, 2017), and lost economic value from salinity could reach $1.2-$2.2 billion/ year by 2030 (Howitt et al., 2009). Globally, many irrigated, semi-arid, and arid agricultural regions have similar conditions (Singh, 2014).Conjunctive use allows some use of more saline groundwater for irrigation (Coe, 1990;Rhoades, 1984). Mandare et al. (2008) studied conjunctive water operations for wheat in a saline groundwater area with scarce surface water supply. Malash et al. (2008) evaluated the effect of saline irrigation on tomato yields and reported that efficient use of low-quality water can leave groundwater salinity unaffected. Other conjunctive water use studies of mixed water qualities of waters for crops such as wheat, maize, and cowpea crops were conducted by

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Saline Groundwater Management and Optimal Cropping Pattern

Cited by 20 publications

References 5 publications

Potential Use of Saline Water for Irrigating Shelterbelt Plants in the Arid Region

Potential Use of Saline Water for Irrigating Shelterbelt Plants in the Arid Region

An overview of the optimization modelling applications

Conjunctive Water Management for Agriculture With Groundwater Salinity

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