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Effect of Pollination, Boron and Bagging on Size, Shape and Yield of Jackfruit

Md. Jillur Rahman
Senior Scientific Officer
Horticulture Research Centre, Gazipur.

Abstract/ Executive Summary:

Two experiments were conducted related to effect on size, shape and yield of jackfruit. One was carried out at Central Cotton Research Training and Seed Multiplication Farm, Sreepur, Gazipur during 2007 and 2008 to study the effect of pollination and boron on size, shape and yield of jackfruit (cv.local), and another was at the Fruit Research Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during the year 2009 to study the effect of fruit bagging. Two doses of boron (0.0% and 0.2%) and four dusting of pollen (no dusting, one time dusting, two time dusting and three time dusting) were tested. Boron and pollination alone, and in combination influenced the shape, size and fruit weight of jackfruit. Four jackfruit germplasm (AH/Joy 145-G₁, AH/Joy 130- G₂, AH/Joy 133 -G₃ and AH/Joy 147- G₄) were bagged with four bagging treatments (no bag-Be, black polyethylene bag- B₁, sac bag- B₂ and transparent polyethylene bag- B_3. Fruit characteristics such as size, shape and yield were influenced by bagging of different jackfruit germplasm.

Keywords: Pollination, Boron, Bagging, Size, Shape, Yield, Jackfruit

Location: Central Cotton Research Training and Seed Multiplication Farm, Sreepur, Gazipur and Fruit Research Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Start Date: 00-00-2007

End Date: 00-00-2009

Program Area: Crop-Soil-Water Management

Commodity: Jackfruit

Objectives:

1. To study the effect of pollination and boron on size, shape and yield of jackfruit

2. To study the effect of fruit bagging.

Methodology:

Separate two experiments were conducted. The first experiment was conducted at Central Cotton Research Training and Seed Multiplication Farm, Sreepur, Gazipur during 2007 and 2008; the second experiment at the Fruit Research Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during the year 2009. Expt. 1. Effects of pollination and boron on size, shape and yield of jackfruit: The age of jackfruit tree was about 30-35 years. Foliar application of boron was done during the on set of male and female inflorescence in the jackfruit tree. Treatments were arranged in a factorial experiment in Randomized Complete Block Design with four replication. There were two factors viz. boron (0.0%- B₀and 0.2%- B₁) and dusting for hand pollination (no dusting -P₀; one time dusting-P₁; two time dusting- P₂ and three time dusting- P₃). Hand pollination was done at mid morning (8-10 am) with suitable male spike over open pollination. Fruits were harvested on 21 June, 2007 and 18 June, 2008. Data on different fruit characters- fruit weight, fruit size (length, diameter), weight of bulb, number of bulb, rind weight etc were recorded and analyzed statistically and mean differences were tested by DMRT. Expt. 2. Effect of Bagging on Size, Shape and Yield of Jackfruit: Treatments were arranged in a factorial experiment in Randomized Complete Block Design with four replication. There were two factors viz. jackfruit germplasm (AH/Joy 145- G₁, AH/Joy 130- G₂, AH/Joy 133- G₃ and AH/Joy 147- G₄) and four bagging (no bag-B₀, black polyethylene bag- B₁, sac bag- B₂ and transparent polyethylene bag- B₃). Bagging treatments began after 10-15 days of complete fertilization of fruits when all the stigmas blackened i.e., at about 30 days after anthesis and continued until harvest. During the stage of bagging, fruits become about 12-15 cm wide and 18-20 cm long. Fruit characters were recorded and analyzed statistically and mean differences were tested by DMRT.

Source of Information: Proceedings of the National Workshop on Jackfruit Problem, Prospects, Research Activities and Development in Bangladesh, March 2011. Forestry Unit, natural Resources Management Division, Bangladesh Agricultural Research Council, Farmgate, Dhaka-1215, Bangladesh, pp: 53-58.

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Funding Source:

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Total Budget (Tk.) :

Achievement/Findings:

Boron and pollination alone, and in combination influenced the shape, size and fruit weight of jack fruit. Four jack fruit germ plasm (AH/Joy 145-G₁, AH/Joy 130- G₂, AH/Joy 133 -G₃ and AH/Joy 147- G₄) were bagged with four bagging treatments (no bag-Be, black polyethylene bag- B₁, sac bag- B₂ and transparent polyethylene bag- B_3. Fruit characteristics such as size, shape and yield were influenced by bagging of different jack fruit germ plasm.

Knowledge Management: Report/Proceedings