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Integrated Nutrient Management for Sweet Orange (2018-19)

M.YASMIN
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

F.S.SHIKHA
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M.A. RAHMAN
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

S.AKHTER
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at Regional Agricultural Research Station (RARS), Jamalpur with the objectives to develop suitable and economic fertilizer dose for sweet orange cultivation through integrated plant nutrient system (IPNS) and to quantify the change of soil health due to addition of organic fertilizer. The experiment started in 2016-2017 and running its second year cycle. There were seven treatments viz. T₁: 100% RDCF, T₂: Cowdung 5 tha^-1 + IPNS based inorganic fertilizer, T₃: Cowdung 10 t ha^-1 + IPNS based inorganic fertilize, T₄: Poultry manure 3 t ha^-1 + IPNS based inorganic fertilizer, T₅: Poultry manure 5 t ha^-1 + IPNS based inorganic fertilizer, T₆:125% RDCF and T₇: control. The tested variety was BARI Malta-1. The experiment was laid out in Randomized Complete Block design (RCBD) with 5 replications. Results revealed that, T₄ treatment (Poultry manure 3 t ha^-1 + IPNS based inorganic fertilizer) produced highest plant height (2.15 m), base girth (23.53 cm) and canopy spreading (1.58 × 1.79 m) and the lowest [1.47 m, 10.13 cm and (1.25 m × 1.37 m), respectively] was found in the control treatment. Integrated use of poultry manure 3 t ha^-1 and IPNS basis inorganic fertilizer was found as the best combination and probable of enriching the soil organic matter.

Keywords: Sweet orange, Organic fertilizer, Integrated nutrient management, Soil fertility

Location: RARS, BARI, Jamalpur

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Crop-Soil-Water Management

Commodity: Organic fertilizer, Sweet orange

Objectives:

To develop suitable and economic fertilizer dose for sweet orange cultivation through integrated plant nutrient system (IPNS) and to quantify the change of soil health due to addition of organic fertilizer.

Methodology:

Site and Soil description: The experiment on integrated nutrient management for sweet orange was conducted at Regional Agricultural Research Station (RARS), Jamalpur during the year since 2016. Malta variety BARI Malta-1 was used for the study. The initial soil samples of the experimental field were collected and analyzed following standard methods. Soil chemical properties and nutrient composition of different organic manure were documented. Fertilizer and Treatments: The experiment was laid out in Randomized Complete Block (RCB) design. Six months old saplings were planted in 23 October, 2016. Saplings were planted in row system at spacing of 3m x 3m with 5 replications. In second year, the plants were fertilized in two splits. Recommended Dose of Chemical Fertilizer of fertilizer for the sweet orange plant was N₁₁₃P₅₆K₆₃Zn₂ (2 years old tree). Urea, TSP, MoP and Zinc sulphate were used as a source of N, P, K and Zn, respectively. All other chemical fertilizers were applied through IPNS basis. Cowdung and poultry manure were used as organic supplement for Malta cultivation. The above mentioned fertilizers and manures are to be applied in two equal splits- during November and June around the tree excluding 1 m radius from the tree base. Weeding, irrigation and other management practices were done as and when necessary. Imidachloprid (Imitaf @ 0.25 ml L^-1) was applied to reduce leaf miner infestation when new leaf emerged. Treatments were as follows as: T₁= 100% of RDCF; T₂= Cowdung 5 t ha^-1 + IPNS based inorganic fertilizer; T₃= Cowdung 10 t ha^-1 + IPNS based inorganic fertilizer; T₄= Poultry manure 3 t ha^-1 + IPNS based inorganic fertilizer; T₅= Poultry manure 5 t ha^-1 + IPNS based inorganic fertilizer; T₆ = 125% of RDCF; and T₇ = Control. Statistical analysis: Data on vegetative and fruit characters were recorded and analyzed statistically using statistical software STAR which was developed by IRRI.

Source of Information: Annual Report, 2018-2019, BARI, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that T₄ treatments i.e. 3 t ha^-1 poultry manure along with inorganic fertilizer was found best for the experiment. This is the second year experiment. The experiment will be continued till three fruiting cycle for confirmation of the results.

Knowledge Management: Report/Proceedings