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Registro Completo |
Biblioteca(s): |
Embrapa Trigo. |
Data corrente: |
10/01/2010 |
Data da última atualização: |
23/08/2013 |
Autoria: |
RUSSELL, J. S. |
Título: |
Nitrogen fertilizer and wheat in a semi-arid environment. I. Effect on yield. |
Ano de publicação: |
1967 |
Fonte/Imprenta: |
Australian Journal of Experimental Agriculture and Animal Husbandry, Melbourne, v. 7, n. 28, p. 453-462, 1967. |
Idioma: |
Inglês |
Conteúdo: |
Response experiments with Gabo wheat at four rates of ammonium sulphate (0, 11.5, 23, and 46 lb N an acre) were carried out at a number of widely-spread locations in the cereal growing areas of South Australia during six seasons in the period 1956-61. Considerable variability in grain and grain + straw yield and in the observed response to nitrogen fertilizer was found. Season and site effects were marked and season-site interactions were also observed. The mean grain yield response was 8.7, 7.2, and 5.1 lb grain for each lb of nitrogen applied as fertilizer at the rates of 11.5, 23, and 46 lb N an acre. These mean values are lower than those reported for other more humid wheat growing areas, but there are conditions where response is at a comparable level. The main difficulty lies in predicting these situations. Several aspects of the use of nitrogen fertilizer in a semi-arid environment are discussed. |
Thesagro: |
Nitrogênio; Trigo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01378naa a2200145 a 4500 001 1827308 005 2013-08-23 008 1967 bl --- 0-- u #d 100 1 $aRUSSELL, J. S. 245 $aNitrogen fertilizer and wheat in a semi-arid environment. I. Effect on yield. 260 $c1967 520 $aResponse experiments with Gabo wheat at four rates of ammonium sulphate (0, 11.5, 23, and 46 lb N an acre) were carried out at a number of widely-spread locations in the cereal growing areas of South Australia during six seasons in the period 1956-61. Considerable variability in grain and grain + straw yield and in the observed response to nitrogen fertilizer was found. Season and site effects were marked and season-site interactions were also observed. The mean grain yield response was 8.7, 7.2, and 5.1 lb grain for each lb of nitrogen applied as fertilizer at the rates of 11.5, 23, and 46 lb N an acre. These mean values are lower than those reported for other more humid wheat growing areas, but there are conditions where response is at a comparable level. The main difficulty lies in predicting these situations. Several aspects of the use of nitrogen fertilizer in a semi-arid environment are discussed. 650 $aNitrogênio 650 $aTrigo 773 $tAustralian Journal of Experimental Agriculture and Animal Husbandry, Melbourne$gv. 7, n. 28, p. 453-462, 1967.
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Embrapa Trigo (CNPT) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
25/10/2017 |
Data da última atualização: |
26/06/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 5 |
Autoria: |
ROSA, N. S.; CRUVINEL, P. E.; NAIME, J. de M. |
Afiliação: |
PAULO ESTEVAO CRUVINEL, CNPDIA; JOAO DE MENDONCA NAIME, CNPDIA. |
Título: |
Stereo vision embedded system proposal for plant phenotyping. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: International Journal of Semantic Computing, v. 11, n. 3, p. 293-309, 2017. |
ISSN: |
1793-351x |
DOI: |
https://doi.org/10.1142/S1793351X17400116 |
Idioma: |
Português |
Palavras-Chave: |
Field crop; Machine vision; Plant phenotyping; Project development; Semantic computing; Weed identification. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00697naa a2200229 a 4500 001 2078210 005 2018-06-26 008 2017 bl uuuu u00u1 u #d 022 $a1793-351x 024 7 $ahttps://doi.org/10.1142/S1793351X17400116$2DOI 100 1 $aROSA, N. S. 245 $aStereo vision embedded system proposal for plant phenotyping. 260 $c2017 653 $aField crop 653 $aMachine vision 653 $aPlant phenotyping 653 $aProject development 653 $aSemantic computing 653 $aWeed identification 700 1 $aCRUVINEL, P. E. 700 1 $aNAIME, J. de M. 773 $tIn: International Journal of Semantic Computing$gv. 11, n. 3, p. 293-309, 2017.
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