Penoxsulam: A Newly Developed Rice Herbicide Used in Taiwan and China

水田除草劑平速爛（稻田喜2.7%油懸劑）以不同劑型在臺灣及中國商品化，從2000~2005年在兩地進行田間試驗顯示平速爛係屬萌後除草劑，可用於移栽田或水直播田防除稗草、闊葉草及莎草等，在臺灣使用於移植田，稗草4-6葉期，每公頃施用20-40公克有效成分，可有效防除鴨舌草、球花蒿草及螢藺。另一劑型0.12%顆粒劑在相同劑量亦有相似防效，比較市售除草劑，兩種劑型對稗草均有較優異防治效果。在中國，平速爛2.7%油懸劑每公頃施用15.0-37.5公克有效成分於移植田及直播田亦可有效防除稗草、鴨舌草、球花蒿草、螢藺、野慈姑、澤瀉及狼把草，由此試驗結果顯示平速爛除草劑除草劑在臺灣及中國防除水稻田雜草具有值得開發的潛力。

關鍵字

平速爛；移栽田；直播田

並列摘要

Herbicide Penoxsulam (Fencer, 2.7% OD) is sold in different formulations in Taiwan and China. Results from field trials in both locations in the period of 2000 to 2005 indicated that Penoxsulam, as a post-emergence chemical applied in transplanted or water-seeded rice, provided excellent control of barnyardgrass (Echinochloa crus-galli), broadleaf weeds and sedges. When applied in rate of 20 to 40 g ai ha^(-1) at 4- to 6-leaf stages of barnyardgrass in transplanted rice in Taiwan, it provided a good control on sheathed monochoria (Monochoria vaginalis), smallflower umbrellaplant (Cyprus difformis), and Japanese bulrush (Scirpus juncoides). Another formulation of Fencer (0.12% GR) had equal efficacy on smallflower umbrellaplant, Japanese bulrush, and sheathed monochoria when applied in rate of 20 to 40 g ai ha^(-1) in transplanted rice field. In comparison with other commercial herbicides, both formulations performed a better control on barnyardgrass. In China, Fencer (2.7% OD) was used for controlling barnyardgrass, Japanese bulrush, sheathed monochoria, oldworld arrowhead (Sagittaria trifolia), bur beggarticks (Bidens tripartita), and water plantain (Allisma plantago-aquatica), generally at rate of 15 to 37.5 g ai ha^(-1), in wet-seeded and transplanted rice paddy. Results suggest the potential of this herbicide in weed control for rice growers in Taiwan and China.

並列關鍵字

Penoxsulam ； transplant ； water-seeded

國際替代計量

Penoxsulam: A Newly Developed Rice Herbicide Used in Taiwan and China

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