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Split Application of Fertilizer on Plant Growth in Grafted Jackfruit Plant

M. Jillur Rahman
Senior Scientific Officer
Pomology Division

M. A. Siddiky
Senior Scientific Officer
Horticulture Research Centre, BARI, Gazipur

Abstract/ Executive Summary:

Study the effects of split application of fertilizer on grafted jackfruit plant was conducted at HRC, BARI, Gazipur during 2012-13. Plant height was significantly influenced by the treatment. The plant height was insignificant and found the highest in T₄ (2.70 m), while the lowest in T₅(1.96 m). Base girth was affected significantly by the treatments. The highest base girth was recorded in T₄(37.0 cm) and the lowest in T₁(28.0 cm). The trunk height was not affected by the treatments. Among the treatments the number of male inflorescence varied from 9.3 to 22.3 per plant. The first male flowers opened on 3^rd December, 2012 in treatment T₂, while the last male flower was observed in T₅. The number of female flower differed significantly with the treatments. The highest number of female inflorescences were obtained from T₂ (4.0) followed by T₁ (1.0), while the lowest number of fruits per plant was obtained from T₄(0.66). Fruit weight was 2.15 kg, number of bulb per fruit was 47. The pulp colour of fruit was yellow and texture was soft. The flavor of pulp was pleasant with 18.6% TSS. Fruits resembled the fruits of mother plant.

Keywords: Jackfruit, Split application, Vegetative growth, Gestation period

Location: Fruit Research Farm of Horticulture Research Centre, BARI, Gazipur

Start Date: 00-06-2010

End Date: 18-03-2013

Program Area: Crop-Soil-Water Management

Commodity: Jackfruit

Objectives:

To find out the appropriate fertilizer dose and time of application for young grafted jackfruit plants.
To study the effect of split application of fertilizers on grafted jackfruit for proper growth.
To standardized the effective fertilizer dose for reducing the gestation period of jackfruit.

Methodology:

The experiment was conducted at the Fruit Research Farm of Horticulture Research Centre, BARI, Gazipur. Grafted plants of jackfruit germplasm AH Joy-101 were planted in the month of July 2008. Before planting the pits were fertilized with 20 kg well rotten cow dung, 250g urea, 200 g TSP, 200 g of MoP and left for 15 days. The experiment was laid out in Randomized Complete Block Design with three replications. The saplings distance was 5 × 5 m. The saplings were fertilized with the following fertilizer treatments. There were five fertilizers treatments, viz. T₁: N-30 g and K-60 g applied 2 times at May and September, T₂: N-30 g and K-60 g applied 4 times at May, August, November and February, T₃: N-30 g and K-60 g applied 6 times at May, July, September, November, January and March, T₄: N-36 g, P-36 g and K-36 g at May, July, September, November, January and March and T₅: Only organic matter at May and September at 20 kg per plant. Moreover, 20 kg cowdung at May and September in T₁, T₂, T₃ and T₄ treatments were also added. Pruning, training, weeding and irrigation were done as and when necessary. Data on plant growth parameters were collected on 18 March, 2013 and were analyzed statistically. Mean separation was done on the basis of Duncan’s Multiple Range Test (DMRT) at 0.05 level.

Source of Information: Research Report on Horticultural Crops 2012-13. Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 25000/-

Total Budget (Tk.) : 25000/-

Achievement/Findings:

Split application of N and K fertilizers accelerated the fruiting of grafted jackfruit plants and after 3 years fruits were found. In the 4^th year, number of fruiting trees increased. So up to 4 years, N (30 g) and K (60 g) fertilizers could be given 4-6 times a year for early bearing. Experiment on irrigation and micro nutrients for fruit retention could be taken next time.

Knowledge Management: Report/Proceedings