The optimal irrigation water salinity and salt component for high-yield and good-quality of tomato in Ningxia

Li, Jingang; Chen, Jing; He, Pingru; Chen, Dan; Dai, Xiaoping; Jin, Qiu; Su, Xiaoyue

doi:10.1016/j.agwat.2022.107940

Cited by 23 publications

(17 citation statements)

References 59 publications

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“…During the harvest seasons, the tomato fruits were picked when reaching the mature grade color following practice [41]. After each picking, the fruit number was recorded for each replicate pot, and the weight and volume of each fruit were measured by the gravity method and 'Archimedes drainage method', respectively [10]. Through accumulation, the fruit yield (FY) and total fruit number (FN) of each tomato plant were obtained, and then the average fruit weight (AFW) and average fruit volume (AFV) for each treatment were calculated.…”

Section: Measurements Of Yield Wue and Qualitymentioning

confidence: 99%

“…Increases in soil salinity are determined by the irrigation water salinity, irrigation frequency, and irrigation quota. From this point of view, many efforts have been made to explore rational irrigation regimes to alleviate the negative effects of saline water irrigation [8][9][10]. Typically, the method of using saline water in practical production is to mix it with freshwater to achieve the goal of reducing the salinity of water for irrigation [11].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Drought Hardening and Saline Water Irrigation on the Growth, Yield, and Quality of Tomato

Gao,

Shao,

Cui

et al. 2023

Agronomy

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Drought hardening could promote the development of plant roots, potentially improving the resistance of crops to other adversities. To investigate the response and resistance of physiological and growth characteristics induced by drought hardening to salt stress in the later stages, a greenhouse experiment was carried out from 2021 to 2022 with one blank control treatment and twelve treatments that comprised combinations of four irrigation regimes (W1 = 85%, W2 = 70%, W3 = 55%, and W4 = 40% of the field capacity) and three irrigation water salinity levels (S2, S4, and S6, referring to 2 g, 4 g, and 6 g of sodium chloride added to 1000 mL of tap water, respectively). The results show that saline water irrigation introduced a large amount of salt into the soil, resulting in the deterioration of tomato growth, physiology, yield, and water use efficiency (WUE), but had a positive, significant effect on fruit quality. When the irrigation water salinity was 2 g L−1, the W2 treatment could reduce soil salt accumulation, even at the end of the maturation stage; consequently, enhancing the increments in plant height and leaf area index during the whole growing stage. The physiological activity of tomato plants under the W2 and W3 treatments showed a promoting effect. Correspondingly, the maximum values of the fruit quality of tomato plants irrigated with the same saline water were all obtained with the W2 or W3 treatment. However, the yield and WUE of the W3 treatment were lower than that of the W2 treatment, which was the highest among the same saline water irrigation treatments, consistent with the reflection of the changing trend of the ratio of fresh weight to dry weight. Overall, drought hardening can be considered an economically viable approach to mitigate the hazards of saline water irrigation, and the W2S2 combination is recommended for tomato production due to the maximum values of yield and WUE with a higher fruit quality among the twelve saline water irrigation treatments.

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Section: Measurements Of Yield Wue and Qualitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Drought Hardening and Saline Water Irrigation on the Growth, Yield, and Quality of Tomato

Gao,

Shao,

Cui

et al. 2023

Agronomy

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“…Excessive salt levels can cause physiological stress in plants, leading to reduced growth, yield losses, and even crop failure [7]. Certain crops, such as tomatoes, are particularly sensitive to salinity stress, making them susceptible to yield reductions when irrigated with saline water [8]. Despite these drawbacks, saline water irrigation also has some benefits for agriculture in Tunisia.…”

Section: Introductionmentioning

confidence: 99%

Modeling Irrigation of Tomatoes with Saline Water in Semi-Arid Conditions Using Hydrus-1D

Kanzari,

Šimůnek,

Daghari

et al. 2024

Land

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In arid and semi-arid regions like Tunisia, irrigation water is typically saline, posing a risk of soil and crop salinization and yield reduction. This research aims to study the combined effects of soil matric and osmotic potential stresses on tomato root water uptake. Plants were grown in pot and field experiments in loamy-clay soils and were irrigated with three different irrigation water qualities: 0, 3.5, and 7 dS/m. The Hydrus-1D model was used to simulate the combined dynamics of subsurface soil water and salts. Successful calibration and validation of the model against measured water and salt profiles enabled the examination of the combined effects of osmotic and matric potential stresses on root water uptake. Relative yields, indirectly estimated from actual and potential transpiration, indicated that the multiplicative stress response model effectively simulated the measured yields and the impact of saline water irrigation on crop yields. The experimental and modeling results provide information to aid in determining the salinity levels conducive to optimal crop growth. The findings indicate that the selected salinity levels affect tomato growth to varying degrees. Specifically, the salinity levels conducive to optimal tomato growth were between 0 and 3.5 dS/m, with a significant growth reduction above this salinity level. The gradual salinization of the root zone further evidenced this effect. The scenario considering a temperature increase of 2 °C had no significant impact on crop yields in the pot and field experiments.

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“…For centuries, brackish water, which is a prevalent unconventional water resource, has been used as a viable alternative to freshwater for agricultural irrigation [4], particularly in arid and semi-arid regions. However, improper brackish water irrigation can result in the buildup of salt ions in the surface soil, adversely affecting crop growth, yield, and quality [5,6]. Additionally, brackish water irrigation is a contributor to secondary soil salinization [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Salinity Levels in Drip Irrigation with Brackish Water on Soil Water-Salt Transport and Yield of Protected Tomato (Solanum lycopersicum)

Ma,

Li,

Jiang

et al. 2023

Agronomy

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The effective exploration and utilization of brackish water resources are crucial to alleviating the scarcity of freshwater in arid regions. This study focused on protected tomato plants and set up four irrigation salinity levels: T1 (2 g·L−1), T2 (4 g·L−1), T3 (6 g·L−1), and T4 (8 g·L−1), with freshwater irrigation as a control (CK). The aim was to investigate the effects of continuous brackish water irrigation on soil water-salt transport and tomato yield. The outcomes highlighted that the moisture content in different layers of soil exhibited a “high in the middle, low at both ends” pattern, with the primary accumulation of soil moisture occurring at the 40 cm depth. The range and moisture content of the soil wetted zone increased with elevated salinity levels. Under continuous brackish water irrigation, the range of the soil wetted zone expanded further for the autumn crops, and the moisture content significantly increased compared to the spring crops. The concentration of soil salt gradually decreased with increasing soil depth, exhibiting greater levels in the 0–20 cm layer compared to the 40–80 cm layer. The average salt concentration in the soil at the end of the growth period was significantly higher than before transplantation, and this phenomenon became more pronounced with increasing salinity levels. Initial irrigation with brackish water with a salinity level of 2–4 g·L−1 promoted the growth of the tomatoes planted in the spring and the plant height and stem diameter reached the peak values of 1.68 m and 1.08 mm for the T2 treatment, respectively, which were 7.1% and 9.2% higher than that of the CK treatment, ensuring efficient yield and water usage. However, continuous irrigation with brackish water with a salinity level of 2–4 g·L−1 inhibited the growth and yield of the tomatoes planted in autumn, while the T1 and T2 treatments only yielded 24,427.42 and 16,774.86 kg·hm−2, respectively, showing a decline of 32.2% and 46.1% compared to the yields of the spring season. Considering the soil water-salt and yield indicators, under the conditions of non-continuous brackish water irrigation, using water with a salinity level of 2–4 g·L−1 is recommended for drip irrigation of protected tomatoes.

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The optimal irrigation water salinity and salt component for high-yield and good-quality of tomato in Ningxia

Cited by 23 publications

References 59 publications

Effects of Drought Hardening and Saline Water Irrigation on the Growth, Yield, and Quality of Tomato

Effects of Drought Hardening and Saline Water Irrigation on the Growth, Yield, and Quality of Tomato

Modeling Irrigation of Tomatoes with Saline Water in Semi-Arid Conditions Using Hydrus-1D

Effects of Different Salinity Levels in Drip Irrigation with Brackish Water on Soil Water-Salt Transport and Yield of Protected Tomato (Solanum lycopersicum)

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