Comparison of different reference evapotranspiration (ET0) models and determination of crop-coefficients of french bean (Phesiolus vulgaris.) in mid hill region of Meghalaya

Tahashildar, M.; Bora, P. K.; Ray, Lala I.P.; Thakuria, Dwipendra

doi:10.54386/jam.v19i3.645

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…The crop coefficient method proposed by FAO indicates that multiplying the crop coefficient K c with ET o can acquire ET c . Due to its clear mechanism, strong practicality, and reliable estimation accuracy, the crop coefficient method has been widely used globally [18,19]. It can be divided into the single and the dual crop coefficient method, the latter method divides the crop coefficient K c into the basic crop coefficient K cb and the soil evaporation coefficient K e [15].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China

Dai,

Chen,

Cui

et al. 2023

Remote Sensing

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As the main expenditure item in water balance, evapotranspiration has an important impact on the surface ecosystem. Assessing the impact of changes in meteorological elements on evapotranspiration is essential to identify the spatiotemporal heterogeneity of hydrographic responses to climate changes. Based on the actual evapotranspiration (ETa) product (GPR-ET) generated by Gaussian process regression (GPR), as well as temperature and precipitation datasets, our study employed various statistical analysis methods, including geographic detector, the center of gravity migration model, spatial variation coefficients, and partial differential models, to investigate the spatiotemporal variation in ETa in China from 2000 to 2018. The analysis covered future trends in ETa changes and the contribution of meteorological factors. Our results showed that the ETa in northwest China had stronger spatial heterogeneity and the mean value was generally lower than that in the southeast. But the center of gravity of ETa was shifting towards the northwest. In most areas, the future trend was expected to be inconsistent with the current stage. ETa in the regions of north and west was mainly driven by precipitation, while its increase in southeast China was largely attributed to temperature. In addition to spatial variations, the joint enhancement effect of temperature and precipitation on ETa exists. According to the contribution analysis, precipitation contributed more to the change in ETa than temperature. These findings have enhanced our comprehension of the contribution of climate variability to ETa changes, providing scientific proof for the optimization apportion of future water resources.

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Section: Introductionmentioning

confidence: 99%

Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China

Dai,

Chen,

Cui

et al. 2023

Remote Sensing

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“…Hence, strategies aimed at matching kidney bean development to suitable soil moisture supply and temperatures regimes are key determinants of adaptation to current and future climate scenarios. An understanding of the crop's responses to these abiotic stresses may enable farmers to increase kidney bean productivity and achieve yield stability (Tahashildar et al, 2017). However, thus far most studies have focused on assessing the response of kidney bean to elevated temperature and water stress as separate factors.…”

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confidence: 99%

Interactive effect of irrigation and temperature regimes on growth and development of kidney bean (Phaseolus vulgaris L.)

et al. 2022

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Approximately 60 percent of kidney bean (Phaseolus vulgaris L.) produced in developing countries is cultivated under conditions of drought stress and low fertility/ low input. Coincidence of water and heat stress, which is projected to occur more in changing climates, cause severe yield loss. To quantify the response of kidney bean to water and temperature stress, an experiment was carried under Randomized Block Design in field and temperature gradient tunnel conditions. Temperature treatments included high temperature for entire crop growth period (~4.6℃, ~3.1℃, ~2.8℃ above mean ambient, 19.6℃), ambient temperature, elevated temperature during pre-flowering phase (~3.7℃ above mean ambient during that period, 19.6℃), flowering phase (~5.3℃ above mean ambient during that period, 23.1℃) and pod-filling phase (~5.2℃ above mean ambient during that period, 28.9℃). These were combined with i) two irrigations (applied at sowing and seedling phase) and ii) three irrigations (additional irrigation at pod-filling phase). Results indicated that plants under seasonal mean temperatures of 36.7/11.7℃, 33.9/11.6℃ and 33.1/11.7℃ had shortened crop duration with 73-78 DAS. Findings this study indicated that kidney bean exhibits phenological plasticity response to temperature and water regimes. Seasonal mean temperature of 24.2℃ lead to better performance of the crop while temperature shocks during pre-flowering and flowering significantly reduced seed yield. Additionally, exposure of kidney bean plants to water stress (available soil moisture content <10%) significantly reduced seed yield. Coincidence of temperature stress and water stress had more detrimental effects on seed yield. Given the climate scenarios indicating increased variability in temperature and rainfall, findings from this study indicate that climatic risks mayaffect kidney bean seed yield in future. Strategies such as providing supplemental irrigation can alleviate the negative effects of temperature stress and improve kidney bean yield.

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Changes in reference evapotranspiration over Northwest China from 1957 to 2018: Variation characteristics, cause analysis and relationships with atmospheric circulation

Zhao

Wang

et al. 2020

Agricultural Water Management

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Comparison of different reference evapotranspiration (ET0) models and determination of crop-coefficients of french bean (Phesiolus vulgaris.) in mid hill region of Meghalaya

Cited by 5 publications

References 2 publications

Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China

Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China

Interactive effect of irrigation and temperature regimes on growth and development of kidney bean (Phaseolus vulgaris L.)

Changes in reference evapotranspiration over Northwest China from 1957 to 2018: Variation characteristics, cause analysis and relationships with atmospheric circulation

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