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Performance of Herbicides for Weed Control in Sugarcane Field

HM Al-Amin
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

MA Rahman
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

ML Kabir
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

MI Hossain
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

MH Rahman
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

MM Ahmed
Bangladesh Sugarcane Research Institute, Ishurdi, Pabna Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the farmers' field of Godagari Upazilla of Rijshahi district and Mirpur Upazilla of Kustia district during 2011-12 cropping season. The study was under taken in irrigated condition to find out the feasibility of using herbicide and to evaluate effective and promising herbicide for weed management in sugarcane field. All the weed control treatments recorded significantly lower weed dry weight in comparison to no weeding (control). Among different weed control treatments three weeding by cultural practices at 45, 90, and 135 DAP significantly recorded lowest weed dry weight (27.33 g/m²) and (27.00 g/m²) in both the locations compared to other treatments. Highest weed control efficiency (71.18%) and (78.34%) were recorded with treatment of weeding by cultural practices. Weeding by SENCOR 70 WG produced significantly higher number of millable canes (128.0 × 103 ha^-1) and (124.0×103ha^-1) in both the locations. But, the highest cane yield 96.72 t ha^-1 and 94.50 t ha^-1 were observed with the treatment of conventional method of weed control (weeding by cultural practices). The highest benefit cost ratio (BCR) of 2.37 and 2.34 were recorded from T₂and the lowest BCR were recorded from 1.53 and 1.88 from T₁ in both the locations. Though best management of weeds has been observed by adopting of weeding by cultural practices but the availability of labour required for conducting these cultural operations may be a constrain to pursue the operation in time. The efficiency of pre and post emergence application of SENCOR 70 WG @ 1.5 kgha^-1 and TOPSTAR 400SC @ 1.5 litreha^-1 in managing weed population have been proved effective and may be adopted as a means of weed management in commercial cane cultivation.

Keywords: Sugarcane, Weed management, Herbicide, Yield

Location: Farmers' field of Godagari Upazilla of Rijshahi district and Mirpur Upazilla of Kustia district

Start Date: 00-00-2011

End Date: 00-00-2012

Program Area: Pest Management

Commodity: Herbicide

Objectives:

The study was aimed to find out the feasibility of using herbicide and to evaluate effective and promising herbicide for weed management in sugarcane field.

Methodology:

The experiment was conducted at Godagari Upazilla of Rijshahi district (High Brand Tract, AEZ-26) and Mirpur Upazilla of Kustia district (High Ganges River Flood Plain Soil, AEZ-11) of Bangladesh during 2011-12 cropping Season under irrigated condition. The soils of the experiment site were loamy with high land. There were five treatments including one control (no weeding). The experiment was laid out in randomized complete block design (RCBD) with three replications. Double budded sugarcane settings of variety Isd 39 were directly planted in mid November, 2011 and harvested at its maturity after twelve months of planting. Cane planting was done in deep furrows at row distance of 100cm and plant to plant distance 30cm, keeping plot size 8mx8m. Treatments were as follows: T₁=No weeding (control), T₂=Weeding by cultural practices at 45, 90 and 135 DAP, T₃=Herbicide TOPSTAR 400SC (Oxadiargly) @1.5 litre ha^-1 , T₄=Herbicide METRO 70 WG (Triazines) @1.5 kg ha^-1 , T₅=Herbicide SENCOR 70 WG (Metribuzin) @1.5 kg ha^-1 . The crop was fertilized with 95, 30, 60, 20, 12 and 1.5 kgha^-1 N, P, K, S, mg and Zn respectively. Herbicidal spray was done@1.5 litre/kg ha^-1 in 1000 litre water with the help of knapsack sprayer. Pre- emergence spray was done immediately after cane planting where as post emergence spray was done 60 days after cane planting (DAP). Weed sample for dry meter estimation were collected from per meter square, Placed randomly at three places from each plot after 120 days crop planting. The weed control efficiency (WCE) was worked out by using the following formula: WCE = (DMC - DMT)/ DMC x 100, Where, DMC = Dry matter weight of weeds in control plot and DMT = Dry matter weight of weeds in treated plot. Weeding was done once in every 45 days intervals starting from 45 DAP for treatment T₂ up to April, 2012. To control insect pest, Furadan 5G was applied @ 40 kgha^-1as per recommendation. Intercultural operations like irrigation, gap filling, earthling-up, tying etc. were done in time. Tiller population of sugarcane was recorded at 90, 120, 150 and 180 DAP. Malleable cane and cane yield were recorded at harvest. Economic and statistical analysis on different parameters was done following the standard procedures.

Source of Information: Eco-friendly Agril. J. 8(02): 08-11, 2015 (February); ISSN 1999-7957

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall results suggested that application of SENCOR 70 WG @1.5 kg ha^-1 and TOPSTAR 400SC @ 1.5 litre ha^-1 found superior to application of METRO 70 WG 1.5 kg ha^-1 in both the locations. Though best management of weeds has been observed by adopting of weeding by cultural practices but the availability of labour required for conducting these cultural operations may be a constrain to pursue the operation in time. The efficiency of pre and post emergence application of SENCOR 70 WG @ 1.5 kg ha^-1, TOPSTAR 400SC @ 1.5 litre ha^-1 in managing weed population have been proved effective and may be adopted as a means of weed management in commercial cane cultivation.

Knowledge Management: Journal