Global Journal of Agricultural Research (GJAR)

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Paclobutrazol suppresses shoot growth and influence flowering of mango Cvs Dashahari, Langra, Chausa and Fazri.

Abstract

The experiment was conducted to find out the effect of paclobutrazol on 21 years old alternatively bearing mango Cvs. Dashahari, Langra, Chausa and Fazri trees were treated with Paclobutrazol as a soil drench (1.0g. and 0.5g/meter canopy diameter) during 15 Oct. and 15 Sept, Average over the two years, the vegetable flushes were significantly reduced by the two soil drench treatments of the stem bearing terminal vegetative shoots compared with control. Flowering ratio in the trees subjected to all the paclobutrazol treatments was higher than that of the control, but the fruit set only slightly increased by these treatments. Paclobutrazol remained in the soil up to 11 months when it was applied to soil and three months in soil drench without soil cover. Paclobutrazol inhibited tree growth by reducing annual shoot length and trunk diameter, compared with the control. The most pronounced effect was that of higher doses of paclobutrazol applied at 15 Oct. Compare to lower doses of paclobutrazol applied at 15 Sept. of the second year with the control. These trees also gave higher flowering on 15 Oct. compare to 15 Sept. with the control. Soil drenches were applied to the cultivars Dashahari, Langra, Chausa and Fazri during 1997 and 1998 with good result. Chemical names used [(2RS, 3RS)-1-(4-Chlorophenyl)-4, 4-dimethyl-2-(1, 2, 4-Trizol-l-yl)] pentan-3-ethanol.

Keywords: PP333), Paclobutrazol (PBZ), Vegetative growth, tree size control

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Email ID: editor.gjar@ea-journals.org
Impact Factor: 7.70
Print ISSN: 2053-5805
Online ISSN: 2053-5813
DOI: https://doi.org/10.37745/gjar.2013

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