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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Semiárido. |
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Data corrente: |
23/04/2003 |
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Data da última atualização: |
19/05/2017 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
EMBRAPA. Centro de Pesquisa Agropecuaria do Tropico Semi-Arido. |
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Título: |
Irrigacao por pivo central no servico de producao de sementes basicas (Bebedouro II): avaliacao tecnico-economica. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Petrolina, 1988. |
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Páginas: |
100p. |
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Série: |
(EMBRAPA.CPATSA. Documentos, 51). |
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ISSN: |
0100-9729 |
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Idioma: |
Português |
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Conteúdo: |
Considerando a necessidade de uma adequada operação e manejo de irrigação, avaliou-se o desempenho dos quatro pivôs central, utilizados na área do Serviço de Produção de Sementes Básicas da Embrapa, em Petrolina, PE. A avaliação foi feita de acordo com a metodologia de Mirrian e Keller (1978) complementada com determinações das perdas de água por escoamento superficial (Kincaid et al. 1979) e distribuição do conteúdo de água do solo antes e após as irrigações. |
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Palavras-Chave: |
Aspecto; Aspecto econômico; Brasil; Economico; Pernambuco; Petrolina; Sementes Basicas. |
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Thesagro: |
Aspersão; Irrigação; Pivô Central; Produção. |
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Thesaurus Nal: |
Irrigation. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01298nam a2200289 a 4500
001 1151300
005 2017-05-19
008 1988 bl uuuu 00u1 u #d
022 $a0100-9729
100 1 $aEMBRAPA. Centro de Pesquisa Agropecuaria do Tropico Semi-Arido.
245 $aIrrigacao por pivo central no servico de producao de sementes basicas (Bebedouro II)$bavaliacao tecnico-economica.
260 $aPetrolina$c1988
300 $a100p.
490 $a(EMBRAPA.CPATSA. Documentos, 51).
520 $aConsiderando a necessidade de uma adequada operação e manejo de irrigação, avaliou-se o desempenho dos quatro pivôs central, utilizados na área do Serviço de Produção de Sementes Básicas da Embrapa, em Petrolina, PE. A avaliação foi feita de acordo com a metodologia de Mirrian e Keller (1978) complementada com determinações das perdas de água por escoamento superficial (Kincaid et al. 1979) e distribuição do conteúdo de água do solo antes e após as irrigações.
650 $aIrrigation
650 $aAspersão
650 $aIrrigação
650 $aPivô Central
650 $aProdução
653 $aAspecto
653 $aAspecto econômico
653 $aBrasil
653 $aEconomico
653 $aPernambuco
653 $aPetrolina
653 $aSementes Basicas
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
04/02/2020 |
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Data da última atualização: |
04/02/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CARVALHO, G. de; BEHLING, M.; SILVA, A. C. da; FELIPE, R. T. A. |
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Afiliação: |
GÉSSICA DE CARVALHO, UFMT, Sinop-MT; MAUREL BEHLING, CPAMT; ANDREA CARVALHO DA SILVA, UFMT, Sinop-MT; RAFAELLA TELES ARANTES FELIPE, UFMT, Sinop-MT. |
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Título: |
Relationship between the physiological and agronomic variables of soybean in the ICLF systems. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 17., 2019, Cuiabá. Challenges for plant physiology; Food production and sustanability: [anais]. [Rio Claro, SP: SBFV], 2019. p. 123. |
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Idioma: |
Inglês |
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Conteúdo: |
Land-use optimization is the main benefit of integrated crop-livestock-forest (ICLF) systems. However, one of the major challenges for the use of integrated systems is the understanding of the interactions that occur between the agriculture and forage components with the forest component, that is, with the shade. Thus, the objective of the study was to evaluate the effect of the tree component in ICLF systems on the relationship between physiological and agronomic variables in soybean crops, 4 years after system implementation. The evaluated systems were: 1) exclusive soybean crop, and 2) ICLF, eucalyptus crops planted in triple rows (3.5 m x 3 m), in the East-West direction, spaced 30 meters away from each other, and annually grown between soybean rows. The experiment followed a randomized block design, with three repetitions. Leaf dry mass (LDM), leaf area index (LAI), specific leaf area (SLA), photosynthesis (A), stomatal conductance (gs), chlorophyll (a and b), plant population and soybean yield were evaluated. The relationship between physiological and agronomic variables was tested through simple correlation matrix. Soybean yield showed positive correlation to plant population (r = 0.924), LDM (r = 0.963), LAI (r = 0.878) and gs (r = 0.891). On the other hand, SLA showed negative correlation to yield (r = - 0.929*) and LDM (r = -0.917 *), i.e., larger SLA did not result in higher yield. Larger SLA did not increase LDM, because plants grown in the shade present expanded and thinner leaves, besides investing in photoassimilates to increase the leaf area in order to maximize light absorption; this process leads to lower leaf mass density. The expansion in the leaf area did not increase crop yield, fact that confirmed the negative correlation between the variables. The photosynthetic rate presented a negative correlation with chlorophyll a and no correlation with chlorophyll b, a different result than expected, since the proportion of chlorophyll, especially b, increases in shaded environments due to higher production of light-collecting pigments that result from low radiation. Thus, ICLF systems present changes in the relationship between physiological variables and yield, especially in cultivated soybean plants close to the trees. MenosLand-use optimization is the main benefit of integrated crop-livestock-forest (ICLF) systems. However, one of the major challenges for the use of integrated systems is the understanding of the interactions that occur between the agriculture and forage components with the forest component, that is, with the shade. Thus, the objective of the study was to evaluate the effect of the tree component in ICLF systems on the relationship between physiological and agronomic variables in soybean crops, 4 years after system implementation. The evaluated systems were: 1) exclusive soybean crop, and 2) ICLF, eucalyptus crops planted in triple rows (3.5 m x 3 m), in the East-West direction, spaced 30 meters away from each other, and annually grown between soybean rows. The experiment followed a randomized block design, with three repetitions. Leaf dry mass (LDM), leaf area index (LAI), specific leaf area (SLA), photosynthesis (A), stomatal conductance (gs), chlorophyll (a and b), plant population and soybean yield were evaluated. The relationship between physiological and agronomic variables was tested through simple correlation matrix. Soybean yield showed positive correlation to plant population (r = 0.924), LDM (r = 0.963), LAI (r = 0.878) and gs (r = 0.891). On the other hand, SLA showed negative correlation to yield (r = - 0.929*) and LDM (r = -0.917 *), i.e., larger SLA did not result in higher yield. Larger SLA did not increase LDM, because plants grown in the shade present expanded... Mostrar Tudo |
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Thesagro: |
Glycine Max. |
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Thesaurus NAL: |
Eucalyptus; Leaf area. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/210279/1/2019-cpamt-maurel-behling-relationship-physiological-agronomic-soybean-iclf.pdf
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Marc: |
LEADER 02953nam a2200181 a 4500
001 2119855
005 2020-02-04
008 2019 bl uuuu u00u1 u #d
100 1 $aCARVALHO, G. de
245 $aRelationship between the physiological and agronomic variables of soybean in the ICLF systems.$h[electronic resource]
260 $aIn: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 17., 2019, Cuiabá. Challenges for plant physiology; Food production and sustanability: [anais]. [Rio Claro, SP: SBFV], 2019. p. 123.$c2019
520 $aLand-use optimization is the main benefit of integrated crop-livestock-forest (ICLF) systems. However, one of the major challenges for the use of integrated systems is the understanding of the interactions that occur between the agriculture and forage components with the forest component, that is, with the shade. Thus, the objective of the study was to evaluate the effect of the tree component in ICLF systems on the relationship between physiological and agronomic variables in soybean crops, 4 years after system implementation. The evaluated systems were: 1) exclusive soybean crop, and 2) ICLF, eucalyptus crops planted in triple rows (3.5 m x 3 m), in the East-West direction, spaced 30 meters away from each other, and annually grown between soybean rows. The experiment followed a randomized block design, with three repetitions. Leaf dry mass (LDM), leaf area index (LAI), specific leaf area (SLA), photosynthesis (A), stomatal conductance (gs), chlorophyll (a and b), plant population and soybean yield were evaluated. The relationship between physiological and agronomic variables was tested through simple correlation matrix. Soybean yield showed positive correlation to plant population (r = 0.924), LDM (r = 0.963), LAI (r = 0.878) and gs (r = 0.891). On the other hand, SLA showed negative correlation to yield (r = - 0.929*) and LDM (r = -0.917 *), i.e., larger SLA did not result in higher yield. Larger SLA did not increase LDM, because plants grown in the shade present expanded and thinner leaves, besides investing in photoassimilates to increase the leaf area in order to maximize light absorption; this process leads to lower leaf mass density. The expansion in the leaf area did not increase crop yield, fact that confirmed the negative correlation between the variables. The photosynthetic rate presented a negative correlation with chlorophyll a and no correlation with chlorophyll b, a different result than expected, since the proportion of chlorophyll, especially b, increases in shaded environments due to higher production of light-collecting pigments that result from low radiation. Thus, ICLF systems present changes in the relationship between physiological variables and yield, especially in cultivated soybean plants close to the trees.
650 $aEucalyptus
650 $aLeaf area
650 $aGlycine Max
700 1 $aBEHLING, M.
700 1 $aSILVA, A. C. da
700 1 $aFELIPE, R. T. A.
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Embrapa Agrossilvipastoril (CPAMT) |
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