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Chemical control of suckers in hazelnut orchards of western Oregon
Weed Technology ( IF 1.4 ) Pub Date : 2020-07-20 , DOI: 10.1017/wet.2020.78
Larissa Larocca de Souza , Marcelo L. Moretti

Hazelnut naturally grows as a multi-stemmed tree. The basal sprouts, known as suckers, grow throughout the season. Suckers are removed to promote a single trunk that facilitates production mechanization and increased yield. In western Oregon, herbicides are the most common method of sucker control, and at least four applications per season are performed in the spring and summer seasons. This study evaluated the efficacy of foliar-applied herbicides currently registered for sucker control in hazelnuts. Season-long and short-term field studies were conducted to assess the efficacy of herbicides to control hazelnut suckers. In the season-long studies, four consecutive applications of treatments that contained 2,4-D, glufosinate, or paraquat provided 50% to 80% control, maintained sucker height at 50 cm or less as compared to 155 cm for the nontreated control, and reduced sucker biomass by 87% as compared to the nontreated control. The short-term study results confirmed the efficacy of 2,4-D, glufosinate, and paraquat for sucker control, and in this study, carfentrazone and saflufenacil reduced sucker biomass to a level comparable to 2,4-D or glufosinate treatment. These results confirm that 2,4-D, glufosinate, paraquat, carfentrazone, and saflufenacil can be used for sucker control in hazelnut and emphasize the necessity of multiple applications during the growing season to control suckers in hazelnut. Proper herbicide selection is important to control suckers with success.

中文翻译:

俄勒冈州西部榛果园吸盘的化学防治

榛子自然生长为多茎树。被称为吸盘的基芽在整个季节都在生长。去除吸盘以促进生产机械化和提高产量的单一树干。在俄勒冈州西部,除草剂是最常用的吸盘控制方法,春季和夏季每个季节至少施用四次。本研究评估了目前已注册用于榛子吸盘控制的叶面除草剂的功效。进行了为期一季和短期的田间研究,以评估除草剂控制榛子吸盘的功效。在为期一季的研究中,连续四次使用含有 2,4-D、草铵膦或百草枯的处理剂可提供 50% 至 80% 的控制率,与未处理对照的 155 cm 相比,吸盘高度保持在 50 cm 或更小,与未处理对照相比,吸盘生物量减少了 87%。短期研究结果证实了 2,4-D、草铵膦和百草枯对吸盘控制的功效,在本研究中,卡芬曲松和苯嘧磺草胺将吸盘生物量降低到与 2,4-D 或草铵膦处理相当的水平。这些结果证实了 2,4-D、草铵膦、百草枯、杀虫草酮和苯嘧磺草胺可用于控制榛子的吸盘,并强调了在生长季节控制榛子吸盘的必要性。正确选择除草剂对于成功控制吸盘很重要。4-D、草铵膦和百草枯用于吸盘控制,在本研究中,卡芬曲松和苯嘧磺草胺将吸盘生物量降低到与 2,4-D 或草铵膦处理相当的水平。这些结果证实了 2,4-D、草铵膦、百草枯、杀虫草酮和苯嘧磺草胺可用于控制榛子的吸盘,并强调了在生长季节控制榛子吸盘的必要性。正确选择除草剂对于成功控制吸盘很重要。4-D、草铵膦和百草枯用于吸盘控制,在本研究中,卡芬曲松和苯嘧磺草胺将吸盘生物量降低到与 2,4-D 或草铵膦处理相当的水平。这些结果证实了 2,4-D、草铵膦、百草枯、杀虫草酮和苯嘧磺草胺可用于控制榛子的吸盘,并强调了在生长季节控制榛子吸盘的必要性。正确选择除草剂对于成功控制吸盘很重要。和苯嘧磺草胺可用于控制榛子的吸盘,并强调在生长季节多次施用以控制榛子的吸盘的必要性。正确选择除草剂对于成功控制吸盘很重要。和苯嘧磺草胺可用于控制榛子的吸盘,并强调在生长季节多次施用以控制榛子的吸盘的必要性。正确选择除草剂对于成功控制吸盘很重要。
更新日期:2020-07-20
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