Estimation of evapotranspiration of different-sized navel-orange tree orchards using energy balance
Identifieur interne : 000588 ( PascalFrancis/Corpus ); précédent : 000587; suivant : 000589Estimation of evapotranspiration of different-sized navel-orange tree orchards using energy balance
Auteurs : Simona Consoli ; Neil O'Connell ; Richard SnyderSource :
- Journal of irrigation and drainage engineering [ 0733-9437 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Crop evapotranspiration (ETc) and crop coefficient (Kco) values of four clean-cultivated navel-orange orchards that were irrigated with microsprinklers, having different canopy features (e.g., age, height, and canopy cover) were evaluated. Half-hourly values of latent heat flux density were estimated as the residual of the energy balance equation using measured net radiation (Rn), soil heat flux density (G), and sensible heat flux density (H) estimated using the surface renewal method. Hourly means of latent heat flux density (LE) were calculated and were divided by the latent heat of vaporization (L) to obtain ETc. Crop coefficients were determined by calculating the ratio Kco=ETc/ETo, with reference evapotranspiration (ET,,) determined using the hourly Penman-Monteith equation for short canopies. The estimated Kco values ranged from 0.45 to 0.93 for canopy covers having between 3.5 and 70% ground shading. The Kco values were compared with Kc values from FAO 24 (reported by Doorenbos and Pruitt in 1975) and FAO 56 (reported by Allen et al. in 1998) and with Kc values from research papers that estimated reference ET from pan evaporation data using the FAO 24 method. The observed Kco values were slightly higher than Kc values for clean-cultivated orchards with high-frequency drip irrigation in Arizona and were slightly lower than for nontilled orchards in Florida. The Kco values were considerably higher than Kc values from FAO 24 and FAO 56 and were higher than Kc values from border-irrigated orchards near Valencia, Spain.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
pA |
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Format Inist (serveur)
NO : | PASCAL 06-0101661 INIST |
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ET : | Estimation of evapotranspiration of different-sized navel-orange tree orchards using energy balance |
AU : | CONSOLI (Simona); O'CONNELL (Neil); SNYDER (Richard) |
AF : | Dept. of Agriculture Engineering, Univ. of Catania, Via S. Sofia 100/95123 Catania/Italie (1 aut.); Tulare County Cooperative Extension, Univ. of California, Agriculture Building, 4437 S. Laspina St/Ste. B, Tulare, CA 93274/Etats-Unis (2 aut.); Dept. of Land, Air and Water Resources, One Shields Ave., Univ. of California/Davis, CA 95616/Etats-Unis (3 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of irrigation and drainage engineering; ISSN 0733-9437; Coden JIDEDH; Etats-Unis; Da. 2006; Vol. 132; No. 1; Pp. 2-8; Bibl. 23 ref. |
LA : | Anglais |
EA : | Crop evapotranspiration (ETc) and crop coefficient (Kco) values of four clean-cultivated navel-orange orchards that were irrigated with microsprinklers, having different canopy features (e.g., age, height, and canopy cover) were evaluated. Half-hourly values of latent heat flux density were estimated as the residual of the energy balance equation using measured net radiation (Rn), soil heat flux density (G), and sensible heat flux density (H) estimated using the surface renewal method. Hourly means of latent heat flux density (LE) were calculated and were divided by the latent heat of vaporization (L) to obtain ETc. Crop coefficients were determined by calculating the ratio Kco=ETc/ETo, with reference evapotranspiration (ET,,) determined using the hourly Penman-Monteith equation for short canopies. The estimated Kco values ranged from 0.45 to 0.93 for canopy covers having between 3.5 and 70% ground shading. The Kco values were compared with Kc values from FAO 24 (reported by Doorenbos and Pruitt in 1975) and FAO 56 (reported by Allen et al. in 1998) and with Kc values from research papers that estimated reference ET from pan evaporation data using the FAO 24 method. The observed Kco values were slightly higher than Kc values for clean-cultivated orchards with high-frequency drip irrigation in Arizona and were slightly lower than for nontilled orchards in Florida. The Kco values were considerably higher than Kc values from FAO 24 and FAO 56 and were higher than Kc values from border-irrigated orchards near Valencia, Spain. |
CC : | 002A32C03B; 002A32C03A3 |
FD : | Evapotranspiration; Verger; Bilan énergétique; Irrigation; Aménagement hydraulique; Canopée; Citrus sinensis; Floride; Arizona; Espagne; Coefficient cultural |
FG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Etats Unis; Amérique du Nord; Amérique; Europe; Agrume |
ED : | Evapotranspiration; Orchard; Energy balance; Irrigation; Water engineering; Canopy(vegetation); Citrus sinensis; Florida; Arizona; Spain; Crop coefficient |
EG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; United States; North America; America; Europe; Citrus fruit |
SD : | Evapotranspiración; Huerto; Balance energético; Irrigación; Aprovechamiento hidráulico; Dosel; Citrus sinensis; Florida; Arizona; España; Coeficiente cultural |
LO : | INIST-572H.354000133252540010 |
ID : | 06-0101661 |
Links to Exploration step
Pascal:06-0101661Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Arizona</term>
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<term>Verger</term>
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<term>Aménagement hydraulique</term>
<term>Canopée</term>
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<front><div type="abstract" xml:lang="en">Crop evapotranspiration (ET<sub>c</sub>
) and crop coefficient (K<sub>co</sub>
) values of four clean-cultivated navel-orange orchards that were irrigated with microsprinklers, having different canopy features (e.g., age, height, and canopy cover) were evaluated. Half-hourly values of latent heat flux density were estimated as the residual of the energy balance equation using measured net radiation (R<sub>n</sub>
), soil heat flux density (G), and sensible heat flux density (H) estimated using the surface renewal method. Hourly means of latent heat flux density (LE) were calculated and were divided by the latent heat of vaporization (L) to obtain ET<sub>c</sub>
. Crop coefficients were determined by calculating the ratio K<sub>co</sub>
=ET<sub>c</sub>
/ET<sub>o</sub>
, with reference evapotranspiration (ET,,) determined using the hourly Penman-Monteith equation for short canopies. The estimated K<sub>co</sub>
values ranged from 0.45 to 0.93 for canopy covers having between 3.5 and 70% ground shading. The K<sub>co</sub>
values were compared with K<sub>c</sub>
values from FAO 24 (reported by Doorenbos and Pruitt in 1975) and FAO 56 (reported by Allen et al. in 1998) and with K<sub>c</sub>
values from research papers that estimated reference ET from pan evaporation data using the FAO 24 method. The observed K<sub>co</sub>
values were slightly higher than K<sub>c</sub>
values for clean-cultivated orchards with high-frequency drip irrigation in Arizona and were slightly lower than for nontilled orchards in Florida. The K<sub>co</sub>
values were considerably higher than K<sub>c</sub>
values from FAO 24 and FAO 56 and were higher than K<sub>c</sub>
values from border-irrigated orchards near Valencia, Spain.</div>
</front>
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) values of four clean-cultivated navel-orange orchards that were irrigated with microsprinklers, having different canopy features (e.g., age, height, and canopy cover) were evaluated. Half-hourly values of latent heat flux density were estimated as the residual of the energy balance equation using measured net radiation (R<sub>n</sub>
), soil heat flux density (G), and sensible heat flux density (H) estimated using the surface renewal method. Hourly means of latent heat flux density (LE) were calculated and were divided by the latent heat of vaporization (L) to obtain ET<sub>c</sub>
. Crop coefficients were determined by calculating the ratio K<sub>co</sub>
=ET<sub>c</sub>
/ET<sub>o</sub>
, with reference evapotranspiration (ET,,) determined using the hourly Penman-Monteith equation for short canopies. The estimated K<sub>co</sub>
values ranged from 0.45 to 0.93 for canopy covers having between 3.5 and 70% ground shading. The K<sub>co</sub>
values were compared with K<sub>c</sub>
values from FAO 24 (reported by Doorenbos and Pruitt in 1975) and FAO 56 (reported by Allen et al. in 1998) and with K<sub>c</sub>
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values for clean-cultivated orchards with high-frequency drip irrigation in Arizona and were slightly lower than for nontilled orchards in Florida. The K<sub>co</sub>
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<s5>22</s5>
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<s4>CD</s4>
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<s2>NS</s2>
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<s2>NG</s2>
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<s2>NG</s2>
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<s2>NG</s2>
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<server><NO>PASCAL 06-0101661 INIST</NO>
<ET>Estimation of evapotranspiration of different-sized navel-orange tree orchards using energy balance</ET>
<AU>CONSOLI (Simona); O'CONNELL (Neil); SNYDER (Richard)</AU>
<AF>Dept. of Agriculture Engineering, Univ. of Catania, Via S. Sofia 100/95123 Catania/Italie (1 aut.); Tulare County Cooperative Extension, Univ. of California, Agriculture Building, 4437 S. Laspina St/Ste. B, Tulare, CA 93274/Etats-Unis (2 aut.); Dept. of Land, Air and Water Resources, One Shields Ave., Univ. of California/Davis, CA 95616/Etats-Unis (3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of irrigation and drainage engineering; ISSN 0733-9437; Coden JIDEDH; Etats-Unis; Da. 2006; Vol. 132; No. 1; Pp. 2-8; Bibl. 23 ref.</SO>
<LA>Anglais</LA>
<EA>Crop evapotranspiration (ET<sub>c</sub>
) and crop coefficient (K<sub>co</sub>
) values of four clean-cultivated navel-orange orchards that were irrigated with microsprinklers, having different canopy features (e.g., age, height, and canopy cover) were evaluated. Half-hourly values of latent heat flux density were estimated as the residual of the energy balance equation using measured net radiation (R<sub>n</sub>
), soil heat flux density (G), and sensible heat flux density (H) estimated using the surface renewal method. Hourly means of latent heat flux density (LE) were calculated and were divided by the latent heat of vaporization (L) to obtain ET<sub>c</sub>
. Crop coefficients were determined by calculating the ratio K<sub>co</sub>
=ET<sub>c</sub>
/ET<sub>o</sub>
, with reference evapotranspiration (ET,,) determined using the hourly Penman-Monteith equation for short canopies. The estimated K<sub>co</sub>
values ranged from 0.45 to 0.93 for canopy covers having between 3.5 and 70% ground shading. The K<sub>co</sub>
values were compared with K<sub>c</sub>
values from FAO 24 (reported by Doorenbos and Pruitt in 1975) and FAO 56 (reported by Allen et al. in 1998) and with K<sub>c</sub>
values from research papers that estimated reference ET from pan evaporation data using the FAO 24 method. The observed K<sub>co</sub>
values were slightly higher than K<sub>c</sub>
values for clean-cultivated orchards with high-frequency drip irrigation in Arizona and were slightly lower than for nontilled orchards in Florida. The K<sub>co</sub>
values were considerably higher than K<sub>c</sub>
values from FAO 24 and FAO 56 and were higher than K<sub>c</sub>
values from border-irrigated orchards near Valencia, Spain.</EA>
<CC>002A32C03B; 002A32C03A3</CC>
<FD>Evapotranspiration; Verger; Bilan énergétique; Irrigation; Aménagement hydraulique; Canopée; Citrus sinensis; Floride; Arizona; Espagne; Coefficient cultural</FD>
<FG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Etats Unis; Amérique du Nord; Amérique; Europe; Agrume</FG>
<ED>Evapotranspiration; Orchard; Energy balance; Irrigation; Water engineering; Canopy(vegetation); Citrus sinensis; Florida; Arizona; Spain; Crop coefficient</ED>
<EG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; United States; North America; America; Europe; Citrus fruit</EG>
<SD>Evapotranspiración; Huerto; Balance energético; Irrigación; Aprovechamiento hidráulico; Dosel; Citrus sinensis; Florida; Arizona; España; Coeficiente cultural</SD>
<LO>INIST-572H.354000133252540010</LO>
<ID>06-0101661</ID>
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