Impact of adjuvants on bentazon efficacy on selected broadleaf weeds

详细信息    查看全文

• 作者：Hussein Fawzy H. Abouziena ; Shiv D. Sharma ; Megh Singh
• 关键词：Herbicide interactions ; AMS ; Induce ; Kinetic ; Cocklebur ; Black nightshade ; Velvetleaf ; Stranglervine
• 刊名：Crop Protection
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：28
• 期：12
• 页码：1081-1085
• 全文大小：147 K

文摘

Tank-mix adjuvants can increase the efficacy of herbicides. Therefore, the effects of different rates of bentazon alone or tank-mixed with ammonium sulfate, non-ionic (0.25 % Induce) or organosilicone (0.1 % Kinetic) adjuvants were investigated on cocklebur (Xanthium strumarium), black nightshade (Solanium nigrum), velvetleaf (Abutilon theophrasti), and stranglervine (Morrenia odorata) under greenhouse condition. There were variations in susceptibility of the four weed species to bentazon-adjuvants tank-mixture treatments. Black nightshade control never exceeded 55 % with all bentazan treatments rates from 0.84 to 2.24 kg ha⁻¹ with or without the adjuvants. While cocklebur was completely controlled with the application of bentazon at 1.12 kg ha⁻¹, or with bentazon at 0.84 kg ha⁻¹ plus one of the three adjuvants, with insignificant differences between adjuvants. The limited factor of controlling velvetleaf and stranglervine is the bentazon rate. Complete foliar death (98–100 % ) of velvetleaf and stranglervine was with bentazon at 1.68 kg ha⁻¹ alone or with Induce or Kinetic adjuvant. The results suggested that black nightshade was difficult-to-control weed, while cocklebur was susceptibility to bentazon at lowest rate (0.84 kg ha⁻¹) plus adjuvant. Mixing adjuvant with bentazon generally enhanced common cocklebur and black nightshade control, while addition of adjuvant to bentazon at all rates for controlling stranglervine did not cause any significant difference.