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Split Application of Fertilizer on Grafted Jackfruit Plant

M. J. Rahman

M. A. Siddiky

M. M. Rahman

Abstract/ Executive Summary:

An experiment was conducted at the Fruit Research Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during 2013-14 to study the effects of split application of fertilizer on grafted jackfruit plant. There were five fertilizer treatments. All the treatments produced fruit. The treatment T₃ with N (90 g) and K (180 g) applied 6 times in May, July, September, November, January and March produced the highest number (9.3) of fruit. The treatment T₄ ( N-108 g, P-108 g and K-108 g) applied 6 times in May, July, September, November, January and March produced maximum plant height and base girth but minimum number of female inflorescences (3.3) .

Keywords: Grafted jackfruit, Fertilizer dose, Split application, Fruit number

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

Start Date: 00-00-2013

End Date: 00-00-2014

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.

Methodology:

The experiment was conducted at the Fruit Research Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during the year 2013-14. There were 5 fertilizer treatments, viz. T₁: N-90 g and K-180 g applied 2 times at May and September; T₂: N-90 g and K-180 g applied 4 times in May, August, November and February; T₃: N-90 g and K-180 g applied 6 times in May, July, September, November, January and March; T₄: N-108 g, P-108 g and K-108 g at May, July, September, November, January and March; T₅: Only organic matter in May and September at 20 kg per plant. The experiment was laid out in the RCBD with 3 replication.In the treatments T₁, T₂, T₃ and T₄ were also added 20 kg cow dung at May and September. The amount of fertilizer was increased according to the age of the plant. Grafted plants of jackfruit germplasm AH Joy-101 were planted in the month of July, 2008. Pruning, training, weeding and irrigation were done as and when necessary. Fruits were harvested in the month of June. Data on plant growth parameters were collected on 20 March, 2014 and were analyzed statistically. Mean separation were done on the basis of Duncan’s Multiple Range Test (DMRT) at 0.05 level.

Source of Information: Research Report on Horticultural Crops 2013-2014 (Pomology Division) HRC, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The highest plant height was observed in T₄ (3.90 m) followed by T₃(3.36 m) and T₂(3.30 m). The lowest plant height was found in T₁ (2.90 m). The effect of treatment on trunk height was insignificant. The highest base girth was recorded in T₄ (47.0 cm) and the lowest in T₅ (33.0 cm). The number of male inflorescence varied from 25.3 to 41.0 per plant in different treatments. The highest number of fruit set was obtained from T₃ (9.3) followed by T₂ (4.3). The lowest number of fruit set per plant was obtained from T₅(2.3). A greater number of fruits were observed to drop. Mean weight was recorded to 1.90 kg, number of bulb per fruit was 41. The pulp colour of fruit was yellow and texture was soft. The flavor of pulp was pleasant. Total soluble solids (TSS) were observed to be 19.0^oBrix. Fruits resembled the fruits of mother plant. Split application of N and K fertilizers accelerated the fruiting of grafted jackfruit plants and after 3 years fruit set was occurred. In the 5th year, number of fruiting trees and number of fruit per plant increased. So up to 5 years, N (90 g) and K (180 g) fertilizers could be given 4-6 times a year.

Knowledge Management: Report/Proceedings