Daily Evapotranspiration Prediction from Louisiana Flooded Rice Field

Shah, Sanjay B.; Edling, R. J.

doi:10.1061/(asce)0733-9437(2000)126:1(8)

Cited by 26 publications

(18 citation statements)

References 8 publications

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“…3). A number of studies evaluating ET in rice systems show increasing K c values as the crop progresses through flowering and then decreasing (Tomar and O'Toole 1980;Lourence and Pruitt 1971;Alberto et al 2011;Shah and Edling 2000)-a trend that is not immediately apparent in this study.…”

Section: Et C and K Ccontrasting

confidence: 47%

Water balances and evapotranspiration in water- and dry-seeded rice systems

et al. 2015

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Section: Et C and K Ccontrasting

confidence: 47%

Water balances and evapotranspiration in water- and dry-seeded rice systems

et al. 2015

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“…As suggested by many authors, the values of this parameter seem to be constant (1.1-1.2) during all phenological stages for different crops, except at the beginning of the vegetative period, when the crop is not completely covering the soil, and during the maturity stage when the leaves are drying up [12]. Crop coefficients based on the Penman-Monteith method were considered adequate for rice irrigation management purposes [27].…”

Section: Introductionmentioning

confidence: 91%

“…The main reason for flooding a rice field is that most rice varieties maintain better growth and produce higher grain yields when grown in a flooded soil than when grown in a nonflooded soil [5]. This type of irrigation does not help save water and may cause abundant water loss [27]. Rice water requirement ranges between 750 and 2500 mm, with an average value of 1250 mm [17].…”

Section: Introductionmentioning

confidence: 99%

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Estimation of rice evapotranspiration using a microlysimeter technique and comparison with FAO Penman-Monteith and Pan evaporation methods under Moroccan conditions

et al. 2003

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This paper reviews field measurements of evapotranspiration from paddy rice fields (ET) in an experimental station in the Gharb region of Morocco, during the summer seasons in 1995 and 1996. The results showed that the seasonal average water consumption of rice was 6.7 mm•day-1 with a maximum value of 8.3 mm•day-1 during the panicle enlargement stage (R2). The average daily ET for 1996 was compared with US Class 'A' open pan evaporation (Ep) and with reference evapotranspiration (ET 0) calculated using a validated FAO Penman-Monteith equation. Both methods gave good estimates of ET with a correlation coefficient of 0.78 (P < 0.001, slope = 1.06) with Ep and 0.79 with ET 0 (P < 0.001, slope = 1.3). The derived mean crop coefficients were 1.06 and 1.3, respectively, for the average of the two years. The cumulated ET over the growing season was nearly equal to the cumulated Ep, and greater by about 20% of cumulated ET 0. This superiority might be attributed to an advective energy transferred from areas surrounding the rice zone activated by wind speed. rice (Oryza sativa) evapotranspiration / crop coefficient / reference ET Résumé-Calcul de l'évapotranspiration du riz sous les conditions marocaines : recherche d'une relation simple entre l'évapotranspiration calculée expérimentalement et l'évapotranspiration de référence estimée à partir de l'équation FAO Penman-Montheith et l'évaporation bac. Cet article traite de l'évapotranspiration du riz (ET) mesurée expérimentalement au niveau du champ dans la région rizicole au nord-ouest du Maroc durant la période estivale de 1995 et 1996. Les résultats obtenus ont été comparés à ceux de l'évaporation à partir d'un bac ouvert class 'A' (Ep) et avec l'évapotranspiration de référence calculée à partir de l'équation FAO Penman-Monteith (ET 0) calibrée sous les conditions marocaines. Les résultats obtenus ont été comparés à l'ET 0 et à l'Ep. Des coefficients culturaux ont été alors établis. Les résultats obtenus ont montré que la moyenne saisonnière des besoins en eau du riz était de 6,7 mm•jour-1 avec un maximum atteint de 8,3 mm•j-1 durant la deuxième décade du grossissement de la panicule avant l'épiaison. L'ET saisonnière en 1996 a montré une corrélation très hautement significative avec les deux modèles, de 0,78 (P < 0,001, pente = 1,06) avec Ep et 0,79 avec ET 0 (P < 0,001, pente = 1,3). les coefficients culturaux moyens des deux années, étaient respectivement de 1,06 (Kcp = ET•Ep-1) et 1,3 (KC 0 = ET•ET 0-1). L'ET cumulée durant la saison de croissance égalise avec l'Ep cumulée et dépasse l'ET 0 cumulée de 20 %. Cette supériorité pourrait provenir d'une énergie advective transmise des zones sèches, entourant la zone rizicole, activée par le déplacement des vents. riz (Oryza sativa) évapotranspiration / coefficient cultural / évapotranspiration de référence

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“…However, there is a strong need for local calibration of crop coefficients because the climatic conditions in the field differ from the standard conditions. Shah and Edling (2000) evaluated PM, FAO-Penman and 1963 Penman combination models for their capabilities to predict rice ET using daily weather data. Crop coefficients of rice for the vegetative, flowering, and yield formation stages were found 1.39, 1.51, and 1.43, respectively.…”

Section: Introductionmentioning

confidence: 99%

Development of crop coefficient models of castor and maize crops

Reddy

2015

European Journal of Agronomy

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Daily Evapotranspiration Prediction from Louisiana Flooded Rice Field

Cited by 26 publications

References 8 publications

Water balances and evapotranspiration in water- and dry-seeded rice systems

Water balances and evapotranspiration in water- and dry-seeded rice systems

Estimation of rice evapotranspiration using a microlysimeter technique and comparison with FAO Penman-Monteith and Pan evaporation methods under Moroccan conditions

Development of crop coefficient models of castor and maize crops

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