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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
10/09/2013 |
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Autoria: |
MARTIN, R. J. |
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Título: |
Irrigation of spring-sown wheat on Templeton silt loam. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
New Zealand Journal of Experimental Agriculture, Wellington, v. 10, p. 137-146, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
Two experiments were carried out in 1974-75, and one in each of 1975-76 and 1976-77. In 1974-75, which had a very dry late spring, irrigation increased yields from an average of 3 t/ha up to 4.4 t/ha. In the subsequent seasons, which had above average rainfall, non-irrigated wheat averaged 5.6 t/ha and yield responses were less than 6%. Yield responses to irrigation were accompanied by increases in grain weight and decreases in grain nitrogen concentration. Fertiliser N reduced yields at all but the highest irrigation level in one experiment in the dry season, but in the 2 wet seasons, yields were increased by the application of N. In 1974-75,Karamu was higher yielding than Kopara and more responsive to irrigation, but the grain N percentage of Kopara was higher than that of Karamu or Gamenya. In 1975-76 and 1976-77, yields increased and 1000-grain weights decreased as sowing rates increased from 80 to 250 kg/ha. |
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Thesagro: |
Irrigação; Trigo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01340naa a2200145 a 4500
001 1834749
005 2013-09-10
008 1982 bl --- 0-- u #d
100 1 $aMARTIN, R. J.
245 $aIrrigation of spring-sown wheat on Templeton silt loam.
260 $c1982
520 $aTwo experiments were carried out in 1974-75, and one in each of 1975-76 and 1976-77. In 1974-75, which had a very dry late spring, irrigation increased yields from an average of 3 t/ha up to 4.4 t/ha. In the subsequent seasons, which had above average rainfall, non-irrigated wheat averaged 5.6 t/ha and yield responses were less than 6%. Yield responses to irrigation were accompanied by increases in grain weight and decreases in grain nitrogen concentration. Fertiliser N reduced yields at all but the highest irrigation level in one experiment in the dry season, but in the 2 wet seasons, yields were increased by the application of N. In 1974-75,Karamu was higher yielding than Kopara and more responsive to irrigation, but the grain N percentage of Kopara was higher than that of Karamu or Gamenya. In 1975-76 and 1976-77, yields increased and 1000-grain weights decreased as sowing rates increased from 80 to 250 kg/ha.
650 $aIrrigação
650 $aTrigo
773 $tNew Zealand Journal of Experimental Agriculture, Wellington$gv. 10, p. 137-146, 1982.
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