Water use by drip-irrigated late-season peaches

Ayars, James E.; Johnson, Randall S.; Phene, C. J.; Trout, Thomas J.; Clark, D. A.; Mead, R.

doi:10.1007/s00271-003-0084-4

Cited by 123 publications

(41 citation statements)

References 13 publications

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“…Other researchers showed that the radiation intercepted represents the energy that can be absorbed by the canopy of plant and therefore be used for transpiration and it has been assumed that the relationship between absorbed energy and transpiration does not change throughout the season (Pereira et al, 2007). These results are confirmed by the researches in lysimeters on peach in California, reporting that noon intercepted radiation produced a significant linear relationship with Kc (Ayars et al, 2003;Johnson et al, 2005). Pereira et al (2007) observed a linear relationship between daily canopy transpiration (Td) and daily net (all-wave) radiation multiplied by LAI for apple, olive and walnut.…”

Section: Introductionsupporting

confidence: 79%

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Rezig

M’hamed

Naceur

2015

EER

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Total Dray Matter (TDM), Photosynthetically Active Radiation Intercepted (PARabs), Water Consumption (WC), Water use-(WUE), Radiation use efficiency (RUE) and the relationship between Radiation Interception and Water Consumption for Durum Wheat were investigate under different irrigation amount (D 1 = 100 % ETc; D 2 = 70 % ETc; D 3 = 40 % ETc and D 4 = pluvial) and during three growing seasons (2005-2006, 2006-2007 and 2007-2008). Results showed that, the cumulative PAR abs decreased with deficit irrigation. In fact, D 1 treatment recorded the highest cumulative PAR abs and the lowest marked underD 4 treatment. Similarly, TDM and RUE were decreased with deficit irrigation. The highest RUE observed under the D 1 (from 1.32 to 1.43 g MJ -1 ) and the lowest under D 4 (from 1.17 to 1.29 g MJ -1 ). However WUE increased with deficit irrigation. The highest WUE were obtained under the D 4 (from 3 to 4 kg m -3 ) and the lowest were observed under D 1 (from 2.8 to 3.1 kg m -3 ). Significant linear relationship was found between cumulative PAR abs and cumulative water consumption with a high correlation coefficient (R 2 ) only under the two treatments D 1 and D 2 .

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Section: Introductionsupporting

confidence: 79%

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Rezig

M’hamed

Naceur

2015

EER

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“…A wide variety of crops and maturity levels were included: lettuce (n = 17), tomato (4), safflower (5), wheat (1), onion (4), barley (1), garlic (1), sugar beet (1), grape (5), bellpepper (5), cotton (3), corn (1), almond (1), alfalfa (2), pistachio (4), cantaloupe (5), watermelon (3), and broccoli (11). Five observations had wet conditions for a portion of the soil surface.…”

Section: Objective 1: Characterization Of Ndvi-fc Relationshipmentioning

confidence: 99%

“…As such, accurate and efficient estimation of actual Fc might allow improved scheduling and allocation of irrigation water [5][6][7][8]. Several studies have related Fc, or the closely related metric, fractional ground shaded area, to specialty crop water use [9][10][11][12][13][14]. This paper is largely based on a multi-year USDA study in the San Joaquin Valley (SJV) that used a weighing lysimeter, which provides the most accurate measure of daily crop water use, to relate Fc to Kcb for several key vegetable crops: broccoli, bellpepper, head lettuce, and garlic [15].…”

Section: Introductionmentioning

confidence: 99%

Satellite NDVI Assisted Monitoring of Vegetable Crop Evapotranspiration in California’s San Joaquin Valley

2012

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Abstract:Reflective bands of Landsat-5 Thematic Mapper satellite imagery were used to facilitate the estimation of basal crop evapotranspiration (ETcb), or potential crop water use, in San Joaquin Valley fields during 2008. A ground-based digital camera measured green fractional cover (Fc) of 49 commercial fields planted to 18 different crop types (row crops, grains, orchard, vineyard) of varying maturity over 11 Landsat overpass dates. Landsat L1T terrain-corrected images were transformed to surface reflectance and converted to normalized difference vegetation index (NDVI). A strong linear relationship between NDVI and Fc was observed (r 2 = 0.96, RMSE = 0.062). The resulting regression equation was used to estimate Fc for crop cycles of broccoli, bellpepper, head lettuce, and garlic on nominal 7-9 day intervals for several study fields. Prior relationships developed by weighing lysimeter were used to transform Fc to fraction of reference evapotranspiration, also known as basal crop coefficient (Kcb). Measurements of grass reference evapotranspiration from the California Irrigation Management Information System were then used to calculate ETcb for each overpass date. Temporal profiles of Fc, Kcb, and ETcb were thus developed for the study fields, along with estimates of seasonal water use. Daily ETcb retrieval uncertainty resulting from error in satellite-based Fc estimation was <0.5 mm/d, with seasonal uncertainty of 6-10%. Results were compared with FAO-56 irrigation guidelines and prior lysimeter observations for reference. OPEN ACCESSRemote Sens. 2012, 4 440

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“…Se ajustó la curva del Kcb mediante el modelo tri-segmentado, lineal-plateau-lineal (Allen et al, 1998;Ayars et al, 2003).…”

Section: Materials Y Métodosunclassified

Determinación del consumo de agua del duraznero por lisimetría

Puppo

García-Petillo

2010

Rev. bras. eng. agríc. ambient.

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RESUMENEn el año 2004 se instaló un lisímetro de compensación de 2 x 2 x 0,80 m con capa freática constante en un monte de durazneros, con el objetivo de estudiar el consumo de agua de ese cultivo en la región sur del Uruguay. Las mediciones se hicieron en las tres primeras temporadas de crecimiento. El consumo en la primera temporada alcanzó valores de 5 mm d -1 , equivalente a 56 L en el marco de plantación. En la segunda temporada llegó a 6 mm d -1 (68 L), aunque alcanzó valores extremos de más de 7 mm d -1 . Cuando el árbol alcanzó su tamaño adulto, el consumo máximo se mantuvo alrededor de los 6 mm d -1 , aunque este valor se alcanzó más temprano que en la temporada anterior. Este adelanto se correspondió con un mayor índice de área foliar (IAF). El coeficiente de cultivo (K c ) fue de alrededor de 1,2 en la primera temporada, y de 1,4 en las dos siguientes. Se calcularon los coeficientes de base (K cb ) y su valor se ajustó por el modelo tri-segmentado. Su valor fue de 0,91 en la primera temporada, 1,04 en la segunda y 1,20 en la tercera. Se hacen algunas observaciones metodológicas sobre el uso de este lisímetro, proponiéndose incorporar la variación de agua en el suelo a la ecuación de balance de volúmenes y se propone adicionar riego desde la superficie. Palabras-clave: coeficiente basal de cultivo, coeficiente de cultivo, evapotranspiración, Prunus persica L. Batsch, riegoDetermination of water use in peach trees with a lysimeter ABSTRACT A compensation lysimeter with constant freatic water table of 2 x 2 x 0.80 m was installed in 2004 in a peach grove, in order to study the crop water consumption in the south of Uruguay. Measurements were taken in the first three growing seasons. Evapotranspiration at the first season reached 5 mm d -1 , equivalent to 56 L in the whole area. In the second season, it went up to 6 mm d -1 (68 L), reaching extreme values of 7 mm d -1 and more. When the tree reached its adult size, the maximum consumption remained around 6 mm d -1 , although this value was reached earlier than the season before. This early behavior came together with higher leaf area index (LAI). The crop coefficient (K c ) was around 1.2 in the first season, and 1.4 in the following two seasons. Basal crop coefficient (K cb ) was calculated and its value was adjusted by the tri-segmented model. The value was 0.91 at the first season, 1.04 in the second and 1.20 in the third. Some methodological observations are made regarding the lysimeter use. Adding the soil water changes to the mass balance equation is suggested, as well as incorporating irrigation from the surface.

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Water use by drip-irrigated late-season peaches

Cited by 123 publications

References 13 publications

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Satellite NDVI Assisted Monitoring of Vegetable Crop Evapotranspiration in California’s San Joaquin Valley

Determinación del consumo de agua del duraznero por lisimetría

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