Roller Application of Picloram for Leafy Spurge Control in Pastures
Roller Application of Picloram for Leafy Spurge Control in Pastures
复制标题
毒莠定滚筒施用防治牧场叶状小蓟病
DOI：
10.1017/s0043174500082217
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发表时间：
1985
期刊：
影响因子：
2.5
通讯作者：
R. Lym
中科院分区：
文献类型：
--
作者：
C. Messersmith;R. Lym
在30至60 g ae/L的浓度下，辊涂毒莠定（4-氨基-3，5，6-三氯吡啶甲酸）对多叶大戟（Euphorbia esula L.）在2010年12月20日，在2011年12月20日，在2012年12月20日，在20当调整滚筒施用器以用60 g/L毒莠定溶液处理最大量的茎组织时，对叶大戟的控制是最有效的。通过包括石油或表面活性剂添加剂，控制没有得到改善。秋季应用滚筒应用毒莠定往往提供更好的控制比春季应用。当用于密集的多叶大戟的立场，辊式施药器适用于只有40%的毒莠定喷雾处理的2.2公斤/公顷。然而，土壤中的氨氯吡啶酸残留量在滚筒施用后与氨氯吡啶酸以0.3至1.1公斤/公顷的剂量作为喷雾施用的残留量相似。
Roller-applied picloram (4-amino-3,5,6-trichloropicolinic acid) at a concentration of 30 to 60 g ae/L gave similar control to leafy spurge (Euphorbia esula L. ♯ EPHES) as spray-applied picloram at 1.1 to 2.2 kg ae/ha. Leafy spurge control was most effective when the roller applicator was adjusted to treat a maximum amount of stem tissue with a 60 g/L picloram solution. Control was not improved by including a petroleum oil or surfactant additive. Fall applications of roller-applied picloram tended to provide better control than spring applications. When used on dense leafy spurge stands, the roller applicator applied only 40% as much picloram as spray treatments of 2.2 kg/ha. However, picloram residues in soil following roller application were similar to those from picloram at 0.3 to 1.1 kg/ha applied as a spray.