University of Khartoum

Evaluation of the Efficacy and Selectivity of Halosulfuron-methyl 75 WG for the Control of Purple Nutsedge (Cyperus rotundus L.) in Sugarcane (Saccharum officinarum L.) in Sudan

Evaluation of the Efficacy and Selectivity of Halosulfuron-methyl 75 WG for the Control of Purple Nutsedge (Cyperus rotundus L.) in Sugarcane (Saccharum officinarum L.) in Sudan

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Title: Evaluation of the Efficacy and Selectivity of Halosulfuron-methyl 75 WG for the Control of Purple Nutsedge (Cyperus rotundus L.) in Sugarcane (Saccharum officinarum L.) in Sudan
Author: Mudawi, Waleed Mudawi Ahmed
Abstract: Pot and field experiments were carried out during the winter season of 2013/2014 at the research yard and farm of the Research and Development Department of Kenana Sugar Company. The objectives of the study were to evaluate the efficacy and selectivity of a Halosulfuron- methyl (Servian 75 WG) at the rates of 36, 48, 60, 72 and 96 gm.ha-1 with Agral 90, 0.25% v/v compared with the standard sugarcane herbicides Gesapax + Gesaprim at the rate of 3.8 + 3.8 L.ha-1 and Krismat at 2.38 kg.ha-1 for control of purple nutsedge. The study also aimed to assess the effect of the different treatments used on viability of subterranean parts (tubers) of the weed, and to assess the selectivity and tolerance of the used herbicides on the sugarcane varieties: Co 6806, R 579 and TUC 75-03. Complete randomized design with four replications and split plot design with three replications were followed in pot and field experiments, respectively. In the pot experiment, the results showed that there were significant differences at (P ≤ 0.05) between herbicide treatments in the control of purple nutsedge and tuber viability. The highest control of purple nutsedge (92%) was recorded for Servian at the rate of 96 g.ha-1, whereas Gesapax + Gesaprim at 3.8 + 3.8 L.ha-1 gave The lowest control (60%) compared with the untreated pot. the greatest effect on tuber viability (32%) was recorded for Servian at the rate of 96 g.ha-1, and the lowest effect (74%) was recorded by Gesapax + Gesaprim at 3.8 + 3.8 L.ha-1 compared with the untreated pot (87%). In the field experiment there were no significant differences at (P > 0.05) between the herbicide treatments on sugarcane plants height with the XI exception of Gesapax + Gesaprim and Krismat. Servian at 48 g.ha-1 resulted in the tallest sugarcane plants (135.58 cm), while Gesapax + Gesaprim at 3.8 + 3.8 L.ha-1 resulted in the shortest sugarcane plants (132.30 cm) compared with the untreated control (137.25 cm). It is concluded that Halosulfuron-methyl (Servian 75 WG) by the four higher rates gave good to excellent control percentage of purple nutsedge and good effect on tubers viability, and has no negative effect (phytotoxicity) on the sugarcane varieties used.
Description: 88 page
URI: http://khartoumspace.uofk.edu/handle/123456789/15910
Date: 2015-07-05


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