西南花生产区花生品种对双氯sulam的反应

W.J. W.J. Grichar, P. Dotray, T. Baughman
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引用次数: 0

摘要

在2018年至2020年的生长季节,在德克萨斯州南部和德克萨斯州高平原地区进行了田间试验,并于2020年在俄克拉荷马州西南部进行了田间试验,以评估花生品种(Georgia-13M, Georgia-09B)和西班牙品种(Ole´)对双氯sulam的耐受性,分别为0.026(制造商推荐使用率)和0.052(制造商推荐使用率的两倍)kg ai/ha。德克萨斯州南部没有发现双氯sulam造成的伤害;然而,在德克萨斯州高平原和俄克拉何马州,使用双氯sulam进行PRE,特别是在喷灌的情况下,出现了显著的发育不良。2018年,在高平原地区,在犁沟灌溉下,没有发现花生发育不良。2019年和2020年,在喷灌条件下,分别施用0.026和0.052 kg/ha的双氯sulam导致俄克拉荷马州和德克萨斯州高平原的早季发育迟缓率为18%至59%。俄克拉荷马州没有发现季末发育迟缓;然而,在德克萨斯高平原地区,仍然可以看到高达20%的发育迟缓。2018年和2020年,南德克萨斯和高平原地区没有发现产量差异;然而,2019年在高平原地区,花生产量随着双氯sulam用量的增加而下降,但施用时间没有影响。在俄克拉何马州,应用时间和速率效应被注意到。双氯sulam施PRE,双氯sulam施率高,花生产量降低。与2000年一样,西南花生种植区尽管种植了不同的品种,但双氯sulam的问题仍然存在。由于花生损伤在5%或更低,施用CRACK不会降低产量,因此可能有机会利用双氯sulam (POST)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Peanut Cultivar Response to Diclosulam in the Southwest Peanut Growing Region
Field experiments were conducted in the south Texas and Texas High Plains area during the 2018 through 2020 growing seasons and in southwestern Oklahoma in 2020 to evaluate runner peanut cultivars (Georgia-13M, Georgia-09B) and the Spanish cultivar (Ole´) tolerance to diclosulam at 0.026 (the manufacture’s recommended use rate) and 0.052 (twice the manufacture’s recommended use rate) kg ai/ha applied preemergence (PRE) or peanut cracking (CRACK). No diclosulam injury was noted in south Texas; however, in the Texas High Plains and Oklahoma locations significant stunting was noted with diclosulam applied PRE especially under sprinkler irrigation. In 2018 at the High Plains location, under furrow irrigation, no peanut stunting was noted. In 2019 and 2020, under sprinkler irrigation, diclosulam at 0.026 and 0.052 kg/ha applied PRE resulted in early-season stunting of 18 to 59% in both Oklahoma and the Texas High Plains. No late-season stunting was noted in Oklahoma; however, up to 20% stunting was still visible at the Texas High Plains location. No yield differences were noted in south Texas or the High Plains region in 2018 or 2020; however, in 2019 at the High Plains location, peanut yield decreased as diclosulam rate increased but application timing had no effect. At the Oklahoma location, application timing and rate effect were noted. Diclosulam applied PRE and the high rate of diclosulam reduced peanut yield. Issues still exist with diclosulam in the southwest peanut growing areas as seen previously in 2000 despite the different varieties planted. There may be opportunities to utilize diclosulam postemergence (POST) since peanut injury was 5% or less and yields were not reduced when applied CRACK.
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