Preemergence herbicides and hand weeding are the two primary methods of weed control in container nursery crops. However, supplemental hand weeding is usually required to maintain sufficient control. With increasing labor costs growers are seeking alternatives. Postemergence herbicides could provide a viable option for reducing labor costs. In the past, growers would not consider postemergence herbicides as an "over-the-top" application because of concerns of crop injury. Now many growers are willingto accept some injury if the injury occurs early in the crop cycle, the crop recovers quickly, and the herbicide application controls at least one major weed species. Recent studies have shown isoxaben (Gallery) 1.12 kg ai/ha (1 lb ai/A) to provide effective postemergence control of bittercress (Cardamine hirsuta) (Altland et aL, 2000); however control was more difficult with increased maturity of bittercress (Altland et al., 2000).
展开▼
机译：备注除草剂和手工杂草是集装箱苗圃中杂草控制的两种主要方法。然而，通常需要补充手除草以维持足够的控制。随着劳动力增加，种植者正在寻求替代品。后期除草剂可以提供降低劳动力成本的可行选择。过去，由于作物损伤的担忧，种植者不会认为后期除草剂是“顶层”应用。现在许多种植者愿意接受一些伤害如果损伤在作物循环早期发生，则作物迅速恢复，除草剂应用程序至少控制一个主要杂草物种。最近的研究表明，Isoxaben（画廊）1.12 kg Ai / ha（1磅Ai / a）提供比特治疗的有效的后期治疗（Cardamine Hirsuta）（Allland等，2000）;然而，对Bittercress的成熟度（Altland等，2000）的增加，控制更困难。
展开▼
