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Effect of Growth Regulator on the Prevention of Fruit Crack in Litchi

M. N. Islam
Principal Scientific Officer
HRC, BARI, Gazipur 1701

M. Moniruzzaman
SO
HRC, BARI, Gazipur 1701

R. Khatun
SO
HRC, BARI, Gazipur 1701

M.F.B. Hossain
SO
HRC, BARI, Gazipur 1701

M. Moniruzzaman
SSO
HRC, BARI, Gazipur 1701

Abstract/ Executive Summary:

Effect of Naphthalene Acetic Acid (NAA) and Gibberellins (GA₃) on controlling of fruit cracking in litchi was tested at the Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur during October 2010-May 2011. Litchi fruits of variety China-3, at the aril development stage were treated with NAA @ 100, 200 and 300ppm and GA₃@ 40, 60 and 80 ppm. NAA and GA₃ had no significant effect on controlling of fruit cracking. However, cracking of fruit was numerically higher in control. Application of GA₃@ 60 and 80 ppm showed to increase length, breadth and single fruit weight. The maximum length of fruit was recorded from 80 ppm GA₃ closely followed by 60 ppm GA₃and the lowest from control. Application of 60 ppm GA₃ gave the maximum breadth of fruit which was at par with 80 ppm GA₃. The highest single fruit weight was obtained from 60 ppm GA₃closely followed by 40 ppm GA₃. The maximum non-cracked fruit percentage was recorded when NAA and GA₃ @ 60 ppm were applied.

Keywords: Litchi, Fruitcraking, Growth regulator

Location: Gazipur

Start Date: 01-10-2011

End Date: 31-10-2011

Program Area: Postharvest and Agro-processing

Commodity: Litchi

Objectives:

To study the effect of growth regulators on fruit creaking of litchi

To find out the optimum dose of growth regulator for prevention of fruit loss due to fruit creak in litchi.

Methodology:

A field experiment was conducted at the Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur during October 2010-11 with a view to finding out the optimum doses of growth regulator for prevention of fruit loss due to fruit creaking of litchi. Different growth regulators were applied on China 3 with NAA @ 100 ppm, 200 ppm,, 300 ppm and GA₃@ 40, 60 and 80 ppm and control. Soil application were done with Boric acid @ 50 g/tree, ZnSO₄ @ 100 g/tree and lime @ 100 g/tree during October 2010. The trial was laid out in randomized complete block design with three replications. Sprays were done after 7 days of fruit set in different panicles of litchi tree. Necessary data on deferent parameters were recorded from different panicles of selected plants. Data were collected on length of fruit, breadth of fruit, single fruit weight, edible portion, TSS and percent of non-cracked fruit. Collected data were analyzed statistically. Mean separation was done by DMRT at 1% level of significance.

Source of Information: Research Report on Horticultural Crops 2011-12. Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 25000/-

Total Budget (Tk.) : 25000/-

Achievement/Findings:

Application of growth regulator (NAA and GA₃) on the reduction of fruit cracking was not encouraging. GA₃had positive influence on fruit size and weight.

Knowledge Management: Report/Proceedings