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Performance of Exotic Sweet Orange (citrus Sinensis) Germplasm (2018-2019)

J. C. SARKER
Citrus Research Station, Bangladesh Agricultural Research Institute (BARI), Jaintapur, Sylhet

F. AHMED
Citrus Research Station, Bangladesh Agricultural Research Institute (BARI), Jaintapur, Sylhet

S. M. L. RAHMAN
Citrus Research Station, Bangladesh Agricultural Research Institute (BARI), Jaintapur, Sylhet

Abstract/ Executive Summary:

A study was conducted with four exotic sweet orange germplasm to see their performance with BARI Malta-1 as check at Citrus Research Station, Jaintapur, Sylhet during 2018 and 2019. Significant differences were recorded among the germplasm tested in terms of growth, yield and yield contributing characteristics. Maximum fruit weight (455 g) was recorded in CS Jai-051 while minimum (235 g) in BARI Malta-1. Fruit size also attained maximum (10.1×9.7 cm) in CS Jai-051. High juice content and high TSS (11 %) were recorded in CS Jai-003 while BARI Malta-1 attained TSS 9.7%. Edible portion was recorded maximum (79.12%) in CS Jai-051 which was followed by CS Jai 012 (77.37%), CS Jai-003 (75.87%) and BARI Malta-1 (73.83%). Fruit color at maturity of exotic sweet orange germplasm CS Jai-051, CS Jai-003, CS Jai012, CS Jai209 and BARI Malta-1were found pale green, bright yellow and greenish yellow respectively. Colors of pulp of exotic germplasm were found off white and orange whereas BARI Malta-1 was light yellow.

Keywords: Sweet orange, Orange, Fungal disease, Manures, Fertilizers

Location: Citrus Research Station, Bangladesh Agricultural Research Institute (BARI), Jaintapur, Sylhet, Bangladesh

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Variety and Species

Commodity: Sweet orange

Objectives:

To develop more improved varieties of sweet orange to fulfill the needs. Hence the study has been under taken.

Methodology:

The experiment was conducted at Citrus Research Station, Bangladesh Agricultural Research Institute (BARI), Jaintapur, Sylhet (25.13562º N latitude, 92.13217º E longitude and 36 m of elevation from mean sea level). Four exotic sweet orange germplasm viz. CS Jai-003, CS Jai-012, CS Jai-051and CS Jai-209 were used as the study material along with BARI Malta-1 as check. All the plants are of same age about three years old and same management level. The plants were nourished with manures and fertilizers at a rate of cow dung 10 kg, urea 200g, TSP 100g, MP 150g, Gypsum 50g, Borax 15g and Zinc Sulfate 15g. Fertilizers were used in two splits; one before rainy season at May and another after rainy season at September (Mandol et al., 2014). Insecticides were used to reduce the infestation of leaf minor when new flushes immerged. Cupravit 50WP (Copper oxichloride + Mancozeb) with 7g/L of water were applied to control canker and other fungal disease. Bordeaux paste was used to control lichen infestation and Bordeaux paste applied twice in a year for reducing lichen twice in the fruiting season; first after rainy season and second before the rain starts. Light pruning was done where necessary. Data were taken on growth, yield and yield contributing characters for further interpretation (Gomez and Gomez, 1984).

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

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among the germplasm, CS Jai-003 and CS Jai-051 are promising and can be released as new sweet orange (Malta) variety. But final conclusion about these two varieties can be made after 2-3 years of further evaluation.

Knowledge Management: Report/Proceedings