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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
07/04/2011 |
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Data da última atualização: |
07/04/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
-- - -- |
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Autoria: |
LEITE, G. B.; PETRI, J. L.; COUTO, M.; HAWERROTH, F. J. |
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Afiliação: |
Epagri |
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Título: |
Increasing apple fruit set on 'condessa' using growth regulators. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Acta Horticulturae, Leuven, v. 884, n. 2, p. 537-544, 2010. |
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Idioma: |
Inglês |
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Notas: |
ISSN, 0567-7572 |
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Conteúdo: |
Increasing the fruit set improves yield of apple cultivars that have a high rate
of flowers drop when grown under adverse climatic conditions. Apple cultivars such
as ?Condessa? have low chilling requirement and intense blooming. However,
depending on the prevalent climatic conditions and year, the fruit set is too low to
result in an economically viable yield. Under these conditions, the fruit set may be
improved by applying growth regulators that interfere on plants metabolism and
physiology. The effects of concentrations of Prohexadione calcium (PCa) or a
mixture of PCa with Thidiazuron (TDZ) were studied in a field trial with ?Condessa?
apple in a mild climate region in Santa Catarina State, Brazil. PCa or PCa+TDZ
were applied at the phenological stages E2, F2, G, and H. PCa was applied at the
concentrations of 0, 55, 110, 165, and 330 mg L-1, with and without adding 12 mg L-1
of TDZ. Independently of its concentration, PCa had little effect when applied single,
while PCa+TDZ significantly increased fruit set and the number of fruit per tree.
The phenological stage of application ware important than concentration of PCa.
Compared to the control, PCa+TDZ applied at the stages G and H increased the
number of fruit per tree by 267 and 391%, respectively
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Palavras-Chave: |
Malus domestica; Pollination; Prohexadione calcium; Thidiazuron. |
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Categoria do assunto: |
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Marc: |
LEADER 01772naa a2200181 a 4500
001 1075482
005 2011-04-07
008 2010 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aIncreasing apple fruit set on 'condessa' using growth regulators.
260 $c2010
500 $aISSN, 0567-7572
520 $aIncreasing the fruit set improves yield of apple cultivars that have a high rate of flowers drop when grown under adverse climatic conditions. Apple cultivars such as ?Condessa? have low chilling requirement and intense blooming. However, depending on the prevalent climatic conditions and year, the fruit set is too low to result in an economically viable yield. Under these conditions, the fruit set may be improved by applying growth regulators that interfere on plants metabolism and physiology. The effects of concentrations of Prohexadione calcium (PCa) or a mixture of PCa with Thidiazuron (TDZ) were studied in a field trial with ?Condessa? apple in a mild climate region in Santa Catarina State, Brazil. PCa or PCa+TDZ were applied at the phenological stages E2, F2, G, and H. PCa was applied at the concentrations of 0, 55, 110, 165, and 330 mg L-1, with and without adding 12 mg L-1 of TDZ. Independently of its concentration, PCa had little effect when applied single, while PCa+TDZ significantly increased fruit set and the number of fruit per tree. The phenological stage of application ware important than concentration of PCa. Compared to the control, PCa+TDZ applied at the stages G and H increased the number of fruit per tree by 267 and 391%, respectively
653 $aMalus domestica
653 $aPollination
653 $aProhexadione calcium
653 $aThidiazuron
773 $tActa Horticulturae, Leuven$gv. 884, n. 2, p. 537-544, 2010.
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