EFEITO do ÁCIDO GIBERÉLICO (AG3) NA FLORAÇÃO E PRODUÇÃO da LIMA ÁCIDA 'TAHITI' (Citrus latifolia Tan.)
Carregando...
Data
2001-12-01
Autores
SANCHES, FRAUZO RUIZ [UNESP]
LEITE, IZABEL CRISTINA [UNESP]
CASTRO, PAULO ROBERTO DE CAMARGO E
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
A floração nos citros, assim como em outras fruteiras, é um dos fatores determinantes para a produção. A possibilidade de inibição ou redução da florada normal e alteração da época de produção para a lima 'Tahiti' é fator primordial para determinar sua rentabilidade econômica. O presente trabalho teve como objetivo avaliar o efeito do ácido giberélico sobre a florada, número de flores formadas, da lima ácida 'Tahiti', nas condições do Estado de São Paulo durante dois anos, buscando inibir a florada normal e observar o efeito desta inibição sobre produções temporãs. O delineamento experimental foi em blocos casualizados (5 blocos) com 3 plantas por tratamento. Foi utilizada uma planta como bordadura entre os tratamentos e uma linha de plantas entre os blocos. Os tratamentos foram: testemunha, 20, 40 e 80 mg/L de ácido giberélico (AG3) + 10 ml/L de espalhante adesivo, e o pH da água utilizada foi 6,2. As plantas foram tratadas com ácido giberélico durante o inverno (estação seca) após 50 dias sem irrigação no primeiro ano e 60 dias no segundo. O ácido giberélico reduziu o número de flores formadas (-81%) e aumentou a produção de frutos temporões (+59,77% ou +16,04 kg/pl).
The flowering in citrus trees, as well as in other fruit trees, is one of the decisive factors for the production. The inhibition possibility or reduction of the normal flowering and alteration of the production season for the 'Tahiti' acid lime is a primordial factor to determine it economical profitability. The aim of this work was to evaluate the effect of gibberellic acid on blooming, number of formed flowers of the 'Tahiti ' acid lime in the conditions of the state of São Paulo, Brazil looking for to inhibit its normal blooming and to quantify the effect of this inhibition on the out-of-season production. The experimental design was of random blocks (5 blocks) with three plants for each treatment. One plant was used as margin between the treatments and a row of plants among the blocks. The treatments consisted of control, 20, 40 and 80 mg/L of gibberellic acid (GA3) + 10 ml/L of adhesive sulfactant and the pH of the used water was 6,2. The plants were treated with gibberellic acid during the winter (dry season) after 50 days without irrigation in the first year and after 60 days in the second year.. The gibberellic acid reduced the number of formed flowers (-81%) and increased the production of out-of-season fruits (+59,77% or +16,04 kg/pl).
The flowering in citrus trees, as well as in other fruit trees, is one of the decisive factors for the production. The inhibition possibility or reduction of the normal flowering and alteration of the production season for the 'Tahiti' acid lime is a primordial factor to determine it economical profitability. The aim of this work was to evaluate the effect of gibberellic acid on blooming, number of formed flowers of the 'Tahiti ' acid lime in the conditions of the state of São Paulo, Brazil looking for to inhibit its normal blooming and to quantify the effect of this inhibition on the out-of-season production. The experimental design was of random blocks (5 blocks) with three plants for each treatment. One plant was used as margin between the treatments and a row of plants among the blocks. The treatments consisted of control, 20, 40 and 80 mg/L of gibberellic acid (GA3) + 10 ml/L of adhesive sulfactant and the pH of the used water was 6,2. The plants were treated with gibberellic acid during the winter (dry season) after 50 days without irrigation in the first year and after 60 days in the second year.. The gibberellic acid reduced the number of formed flowers (-81%) and increased the production of out-of-season fruits (+59,77% or +16,04 kg/pl).
Descrição
Palavras-chave
Citrus, flowering, GA3, Tahiti, Gibberellic acid, Citros, Florescimento, GA3, entressafra, Taiti
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 23, n. 3, p. 504-509, 2001.