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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
18/09/2014 |
Actualizado : |
15/05/2015 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
ROEL, A.; HEILMAN, J.L.; MCCAULEY, G.N. |
Afiliación : |
ALVARO ROEL DELLAZOPPA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Water use and plant response in two rice irrigation methods. |
Fecha de publicación : |
1999 |
Fuente / Imprenta : |
Agricultural Water Management, 1999, v. 39, no. 1, p. 35-46. |
ISSN : |
0378-3774 |
DOI : |
10.1016/S0378-3774(98)00087-0 |
Idioma : |
Inglés |
Contenido : |
Abstract
Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to greater evaporation from the water surface. No differences in ET were found in 1995. Stomatal conductance was lower in FF plots during the non-flood period, indicating some degree of water stress. Irrigation method did not affect yield, but the PP method reduced time to 100% heading by 5 to 7 days. These results suggest that the PP method can be useful not only to suppress red rice, but also to save water and produce an earlier maturing crop. Early maturity is particularly important in areas where ratoon cropping is practiced. MenosAbstract
Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to gr... Presentar Todo |
Palabras claves : |
EVAPORACION; EVAPOTRANSPIRACION; REQUERIMIENTOS DE AGUA; TRANSPIRACION. |
Thesagro : |
ARROZ IRRIGADO. |
Asunto categoría : |
F06 Riego |
Marc : |
LEADER 02692naa a2200229 a 4500 001 1050382 005 2015-05-15 008 1999 bl uuuu u00u1 u #d 022 $a0378-3774 024 7 $a10.1016/S0378-3774(98)00087-0$2DOI 100 1 $aROEL, A. 245 $aWater use and plant response in two rice irrigation methods.$h[electronic resource] 260 $c1999 520 $aAbstract Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to greater evaporation from the water surface. No differences in ET were found in 1995. Stomatal conductance was lower in FF plots during the non-flood period, indicating some degree of water stress. Irrigation method did not affect yield, but the PP method reduced time to 100% heading by 5 to 7 days. These results suggest that the PP method can be useful not only to suppress red rice, but also to save water and produce an earlier maturing crop. Early maturity is particularly important in areas where ratoon cropping is practiced. 650 $aARROZ IRRIGADO 653 $aEVAPORACION 653 $aEVAPOTRANSPIRACION 653 $aREQUERIMIENTOS DE AGUA 653 $aTRANSPIRACION 700 1 $aHEILMAN, J.L. 700 1 $aMCCAULEY, G.N. 773 $tAgricultural Water Management, 1999$gv. 39, no. 1, p. 35-46.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
02/03/2018 |
Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
Autor : |
GARCIA, A.; MORON, A. |
Afiliación : |
ADRIANA GARCIA LAMOTHE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DAVID ALEJANDRO MORON YACOEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Estudios de C, N y P en la biomasa microbiana del suelo en tres sistemas de rotación agrícola |
Fecha de publicación : |
1992 |
Fuente / Imprenta : |
Revista INIA de Investigaciones Agronómicas, 1992, no. 1:1, p. 111-126 |
Páginas : |
p111-126 |
Serie : |
Revista INIA de Investigaciones Agronómicas; v.1(1) |
ISSN : |
0797-5481 |
Idioma : |
Español |
Notas : |
Resúmenes presentados en la Serie Técnica N°11 "SIMPOSIO SUSTENTABILIDAD DE LAS ROTACIONES CULTIVO - PASTURA, 8-9 AGOSTO 1991, PAYSANDÚ, URUGUAY. Montevideo (Uruguay): INIA, 1991. |
Thesagro : |
CARBONO; ESTRUCTURA DEL SUELO; FOSFORO; MATERIA ORGANICA; NITROGENO; PASTIZAL MIXTO; PROPIEDADES FISICO-QUIMICAS; PROPIEDADES FISICOQUIMICAS; ROTACION DE CULTIVOS; SUELO; URUGUAY. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/8842/1/15630101207085446.pdf
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Marc : |
LEADER 01061naa a2200301 a 4500 001 1012605 005 2018-03-02 008 1992 bl uuuu u00u1 u #d 022 $a0797-5481 100 1 $aGARCIA, A. 245 $aEstudios de C, N y P en la biomasa microbiana del suelo en tres sistemas de rotación agrícola 260 $c1992 300 $ap111-126 490 $aRevista INIA de Investigaciones Agronómicas; v.1(1) 500 $aResúmenes presentados en la Serie Técnica N°11 "SIMPOSIO SUSTENTABILIDAD DE LAS ROTACIONES CULTIVO - PASTURA, 8-9 AGOSTO 1991, PAYSANDÚ, URUGUAY. Montevideo (Uruguay): INIA, 1991. 650 $aCARBONO 650 $aESTRUCTURA DEL SUELO 650 $aFOSFORO 650 $aMATERIA ORGANICA 650 $aNITROGENO 650 $aPASTIZAL MIXTO 650 $aPROPIEDADES FISICO-QUIMICAS 650 $aPROPIEDADES FISICOQUIMICAS 650 $aROTACION DE CULTIVOS 650 $aSUELO 650 $aURUGUAY 700 1 $aMORON, A. 773 $tRevista INIA de Investigaciones Agronómicas, 1992, no. 1:1, p. 111-126
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