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Effect of Weeding and Thinning Manipulation Practices on Fibre Yield and Economics of Deshi Jute.

A.T.M. Morshed Alam
SSO
Crop Management Department, Agronomy Division, Bangladesh Jute Research Institute,Manik Mia Avenue, Dhaka-1207.

M. Shahadat Hossain
SO
Crop Management Department, Agronomy Division, Bangladesh Jute Research Institute,Manik Mia Avenue, Dhaka-1207.

M. A. Hamidi
Joint Secretary
Ministry of Establishment, Bangladesh Secretariate, Dhaka-1000

M. Mahbubul Islam
Director (Admn. & Finance)
Agronomy Division, Bangladesh Jute Research Institute,Manik Mia Avenue, Dhaka-1207.

Izaz Ahmed
PSO
Crop Management Department, Agronomy Division, Bangladesh Jute Research Institute,Manik Mia Avenue, Dhaka-1207.

Abstract/ Executive Summary:

The experiment was conducted to find out the effect of weeding and thinning practices on the fibre yield and economics of deshi jute (Corchorus capsularis L.) at Dhaka and Manikganj during 2005-06. Jute variety CVL-1 was used as study material. Treatments were five different combination of weeding and thinning operations viz. T₁= Three hand weeding at 15, 30 and 45 days after sowing (DAS); T₂= One raking at 15 DAS and two weeding at 30 and 45 DAS; T₃= Two raking at 15 & 30 DAS and one weeding at 45 DAS; T₄= One raking at 15 DAS, one weeding at 30 DAS, tanabach at 60 DAS & katabach at 80 DAS and T₅= No raking and no weeding (control). The results revealed that the plant height, base diameter, fibre and stick yield were significantly influenced by different combination of weeding and thinning operations at 1% level of significance. The highest fibre and stick yields were obtained from the treatment T₁. But the combination of weeding and thinning operation in T₃ gave better fibre yield (2.25-2.27tha^-1) at lower cost along with the highest net profit (Tk. 14848.00-15489.21 ha^-1) and the highest benefit cost ratio (1.67-1.72).

Keywords: Weeding, Thinning, Manipulation, Deshi jute.

Location: Head Quarter of Bangladesh, Jute Research Institute, Dhaka and Jute Agriculture experimental Station Manikganj

Start Date: 01-03-2006

End Date: 31-10-2007

Program Area: Pest Management

Commodity: Jute

Objectives:

The study was undertaken to find out the effect of different weeding and thinning combinations on the fibre yield and their economic performance of white jute.

Methodology:

The experiment was conducted at two different locations viz. Manik Mia Avenue, Dhaka and Jute Agriculture experimental Station, (JAES), Jagir, Manikgonj during the year 2006 and 2007. The deshi jute (Corchorus capsularis L.) variety CVL-1 was used as study material. The treatments were five different combination of weeding and thinning operations viz. T₁= Three weeding at 15, 30 and 45 DAS (W₁₅ + W₃₀ + W₄₅), T₂= One raking at 15 DAS and two weeding at 30 and 45 DAS(R₁₅+W₃₀+W₄₅); T₃= Two raking at 15 & 30 DAS and one weeding at 45 DAS ( R₁₅+R₃₀+W₄₅); T₄= One raking at 15 DAS, one weeding at 30 DAS, tanabach at 60 DAS & katabach at 80 DAS (R₁₅+W₃₀+T₆₀+K₈₀) and T₅= No raking and no weeding i.e. control (R₀+W₀), where W = Weeding, R= Raknig, T = Tanabach, K = Katabach and numerals stand for number of days after sowing. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Seeds were sown on 28 March at Manikgonj and 30 March in Dhaka. The fertilizer dose and plant protection measures were applied as per Bangladesh Jute Research Institute recommendation (BJRI, 2005). The crops were harvested at field duration of 110 days in each location. Data of two year averages of yield and all yield attributing characters were analyzed statistically. The mean difference among the treatments were adjudged by the New Duncan`s Multiple Range Test (Gomez and Gomez, 1984). Economic analysis was done on the basis of prevailing market price of the input and output products.

Source of Information: Bangladesh Journal of Weed Science. 1(1): 31-34.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20000

Total Budget (Tk.) : 20000

Achievement/Findings:

The highest fibre and stick yields were obtained from the treatment Three hand weeding at 15, 30 and 45 days after sowing (T₁). But the combination of weeding and thinning operation in T₃ i.e., Two raking at 15 & 30 DAS and one weeding at 45 DAS ( R₁₅+R₃₀+W₄₅) gave better fibre yield (2.25-2.27tha^-1) at lower cost along with the highest net profit (Tk. 14848.00-15489.21 ha^-1) and the highest benefit cost ratio (1.67-1.72).

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