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Effect of Foliar and Soil Application of Copper and Boron for Reducing Fruit Dropping and Increasing Yield of Old Mango Trees (2018-2019)

M. A. Rahman
Fruit Research Station (FRS), BARI, Binodpur, Rajshahi

M. A. Uddin
Fruit Research Station (FRS), BARI, Binodpur, Rajshahi

G. M. M. Bari
Fruit Research Station (FRS), BARI, Binodpur, Rajshahi

Abstract/ Executive Summary:

An experiment was conducted at the Fruit Research Station (FRS), BARI, Binodpur, Rajshahi during the season of 2018-2019 to develop combined fertilizer application method for efficient use of fertilizer to increase yield and quality of BARI Aam-4. There were eight treatment combinations viz. T₁: Control, T₂: 0.1% Cu FA+0.015% B FA (FA: Foliar Application), T₃: 0.2% Cu FA+0.03% B FA, T₄: 0.2% Cu FA, T₅: 0.03% B FA, T₆: 16 g B/tree in soil, T₇: 80 g Cu/tree in soil, T₈: 80 g Cu/tree in soil+16 g B/tree in soil. A blanket dose of NPKS @ 460, 100, 200 and 63g/treewere applied in the soil. The highest fruit yield (67 kg/tree) and nutritionally improved quality mango were recorded in T₃. Fruit dropping was reduced up to 50.68% in T₂ and shelf life was increased up to 32.33% in T₃ over control. InT₃ treatment, protein, CHO, TSS and total sugar content were increased over control treatment by 50.68%, 3.43%, 35.44% and 37.81%, respectively.

Keywords: Mango, Fertilizer, Fruit, Old mango tree, Good quality, BARI Aam-4, Cleaner, Nutrient content

Location: Fruit Research Station (FRS), BARI, Binodpur, Rajshahi, Bangladesh

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Variety and Species

Commodity: Mango, Fertilizer, Soil fertility

Objectives:

To develop combined fertilizer application method for efficient use of fertilizer.

Methodology:

The experiment was conducted at the Fruit Research Station (FRS), BARI, Binodpur, Rajshahi during the season 2018-2019 to develop combined fertilizer application method for efficient use of fertilizer. The crop was mango and variety was BARI Aam-4. There were eight treatment combinations viz. T₁: Control, T₂: 0.1% Cu FA+0.015% B FA (FA: Foliar Application), T₃: 0.2% Cu FA+0.03% B FA, T₄: 0.2% Cu FA, T₅: 0.03% B FA, T₆: 16 g B/tree in soil, T₇: 80 g Cu/tree in soil, T₈: 80 g Cu/tree in soil+16 g B/tree in soil. A blanket dose of NPKS @ 460, 100, 200 and 63g/treewere applied in soil. The experiment was conducted in a randomized complete block design with three replications. Experiment was started at November 2018. A mango tree was treated as a unit replication. Two times weeding and necessary plant protection measures were taken. Plant analysis, total fruit no., individual fruit weight (g), yield (t/ha), partitioning of skin, flesh and stone weight of fruits (%), basic nutrient content of skin, TSS (%), total analysis of fruit for nutritional facts for each treatment, shelf life (days after harvest), sugar-acidity ratio fruit, etc. for each treatment were recorded. Data on yield and yield contributing character were recorded and analyzed statistically using open source software R program (version 3.5.2).

Source of Information: Annual Research Report 2018-2019, Fruit Research Farm of HRC, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest fruit yield (67 kg/tree) and nutritionally improved quality mango were recorded in T₃. Fruit dropping was reduced up to 50.68% in T₂ and shelf life was increased up to 32.33% in T₃ over control. In T₃ treatment, protein, CHO, TSS and total sugar content were increased by 50.68%, 3.43%, 35.44% and 37.81%, respectivelyover control. BARI Aam-4 should be treated with 0.2% Cu + 0.03% B as foliar application method along with recommended dose of fertilizer in the mango growing areas of Bangladesh. If the farmers adopt the use of this dose as foliar application then they will get a handsome level (1.11) of MBCR. But this is the 1^st year of the experiment. It should be trialed for more 2-3 years for final recommendation.

Knowledge Management: Report/Proceedings