Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China)

Huang, Ze; Liu, Yü; Cui, Zeng; Fang, Yan; He, Honghua; Liu, Bingru; Wu, Gao‐Lin

doi:10.1016/j.fcr.2018.02.013

Cited by 88 publications

(46 citation statements)

References 27 publications

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“…Huang et al. () reported increased SWD with alfalfa compared with similarly aged grassland in arid China where SWD at 6 yr after planting was 44 and 50% from 50‐ to 100‐ and 100‐ to 150‐cm soil layers, respectively. The effect was less pronounced (<10%) below 200 cm.…”

Section: Resultsmentioning

confidence: 99%

“…It was determined that 46% of the VWC depleted by alfalfa was from the top 30.5 cm of the soil profile, 22% was from 30.5 to 61 cm, and 10% each from 61 to 91.5, 91.5 to 122, and 122 to 152.5 cm (Houston, 1955). Huang et al (2018) reported increased SWD with alfalfa compared with similarly aged grassland in arid China where SWD at 6 yr after planting was 44 and 50% from 50-to 100-and 100-to 150-cm soil layers, respectively. The effect was less pronounced (<10%) below 200 cm.…”

Section: Soil Water Storage and Depletionmentioning

confidence: 94%

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Row spacing of alfalfa interseeded into native grass pasture influences soil‐plant‐water relations

et al. 2020

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Interseeding alfalfa (Medicago sativa L.) can improve forage quality of grasslands by adding a high‐protein species, but this runs the risk of accelerating soil water depletion. The objective was to evaluate effects of cultivar and row spacing of alfalfa on soil water balance and plant water potentials (Ψ) of two upright‐type cultivars, NuMex Bill Melton and WL 440HQ, and a prostrate‐type Falcata‐Rhizoma blend, interseeded into native grasses in October 2015 near Lubbock, Texas. Alfalfa was interseeded at 36‐cm (narrow) and 71‐cm (wide) row spacings. Soil volumetric water content (VWC) and midday Ψstem and Ψleaf were measured weekly in 2017 and 2018 growing seasons. Soil VWC was not affected by alfalfa cultivars (P > .05), whereas alfalfa row spacings differed (P < .05). Narrow spacing caused lower (P < .05) VWC than wide spacing relative to the grass‐only control in both the upper 40‐ and 40‐ to 100‐cm layers of the soil. Wide‐row spacing had similar VWC to control in 2017 for both soil layers (P > .05). Soil water depletion increased with alfalfa crown density (r = .60, P < .05) in association with enhanced evapotranspiration and denser root mass below 30‐cm soil depth. Grass and alfalfa Ψstem and Ψleaf were depressed in narrow rows relative to wide rows and control, indicating that presence of alfalfa intensified competition with the grass for soil water. The wide‐row treatment seldom had adverse effects on grass water stress. Wide‐row spacing achieved a favorable compromise between enhanced water use and improved stand productivity.

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Section: Resultsmentioning

confidence: 99%

Section: Soil Water Storage and Depletionmentioning

confidence: 94%

Row spacing of alfalfa interseeded into native grass pasture influences soil‐plant‐water relations

et al. 2020

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“…Given the growing demand for food, animal feed, and fiber to accommodate an expanding human population with limited new productive land, it will become necessary to utilize salt-affected lands [14,15]. As one of the most vital perennial legume forages cultivated worldwide, alfalfa (Medicago sativa L.) is a prominent feature of salt-affected lands, such as saline soil [16], mainly because of its good nutritional forage quality for livestock husbandry and its ability to fix nitrogen; however, it is considered moderately sensitive to salinity stress and alkalinity stress [17] Different from saline soils, where the focus is on ionic osmotic stress due to high salinity [18][19][20][21][22], alfalfa grown in such SA conditions often experiences alkaline stress, which inhibits plant growth and reduces yield [23,24].…”

Section: Introductionmentioning

confidence: 99%

Ca2+/Na+ Ratio as a Critical Marker for Field Evaluation of Saline-Alkaline Tolerance in Alfalfa (Medicago sativa L.)

et al. 2020

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Current indices of saline-alkaline (SA) tolerance are mainly based on the traditional growth and physiological indices for salinity tolerance and likely affect the accuracy of alfalfa tolerance predictions. We determined whether the inclusion of soil alkalinity-affected indices, particularly Ca2+, Mg2+, and their ratios to Na+ in plants, based on the traditional method could improve the prediction accuracy of SA tolerance in alfalfa, determine important indices for SA tolerance, and identify suitable alfalfa cultivars in alkaline salt-affected soils. Fifty alfalfa cultivars were evaluated for their SA tolerance under SA and non-SA field conditions. The SA-tolerance coefficient (SATC) for each investigated index of the alfalfa shoot was calculated as the ratio of SA to non-SA field conditions, and the contribution of SATC under different growth and physiological indices to SA tolerance was quantified based on the inclusion/exclusion of special alkalinity-affected indices. The traditional method, excluding the special alkalinity-affected indices, explained nearly all of the variation in alfalfa SA tolerance, and the most important predictor was the SATC of stem length. The new method, which included these special alkalinity-affected indices, had similar explanatory power but instead identified the SATC of shoot Ca2+/Na+ ratio, followed by that of stem length, as key markers for the field evaluation of SA tolerance. Ca2+, Mg2+, and their ratios to Na+ hold promise for enhancing the robustness of SA-tolerance predictions in alfalfa. These results encourage further investigation into the involvement of Ca2+ in such predictions in other plant species and soil types under more alkaline salt-affected conditions.

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“…Alfalfa (Medicago sativa) is a perennial legume forage, and is known as 'the king of forage' because of its high yield and quality. Alfalfa is tolerant to barren land, saline-alkali conditions and drought Huang et al 2018;. However, saline-alkali stress reduces the yield and quality of alfalfa (Ruicai et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Improving plant growth and alleviating photosynthetic inhibition from salt stress using AMF in alfalfa seedlings

Shen

Jiang

Ma-bo

et al. 2019

Journal of Plant Interactions

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The effects of arbuscular mycorrhizal fungi Glomus mosseae (+AMF) on the growth, nutrient uptake and leaf photosynthetic characteristics of alfalfa (Medicago sativa) under salt stress were studied. In alfalfa, 100 mM salt stress had no obvious effect on plant growth, nutrient content and photosynthetic capacity, however, 200 mM salt stress significantly inhibited biomass accumulation and NPK uptake. In addition, 200 mM salt stress led to decreased photosynthetic carbon assimilation capacity and lower PSII and PSI activity levels. Cultivation of alfafa with +AMF promoted biomass accumulation and uptake of nutrients, increased its underground growth, and promoted accumulation of P over N and K. +AMF increased PSII and PSI activities in alfalfa leaves under salt stress, and increased the electron transfer ability of PSII donor and acceptor sides. +AMF not only made alfalfa have relatively high stomatal conductance under salt stress, but also significantly enhanced its ability to utilize CO 2 .

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Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China)

Cited by 88 publications

References 27 publications

Row spacing of alfalfa interseeded into native grass pasture influences soil‐plant‐water relations

Row spacing of alfalfa interseeded into native grass pasture influences soil‐plant‐water relations

Ca2+/Na+ Ratio as a Critical Marker for Field Evaluation of Saline-Alkaline Tolerance in Alfalfa (Medicago sativa L.)

Improving plant growth and alleviating photosynthetic inhibition from salt stress using AMF in alfalfa seedlings

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