Selectivity and efficacy of herbicides applied on barley for weed control

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
L. Galon, A. A. D. Silva, Milena Barretta Franceschetti, C. Müller, S. Weirich, Janaíne Oliveira Toso, Rodrigo José Tonin, G. F. Perin
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引用次数: 1

Abstract

: Ryegrass and turnip are weeds that cause high yield losses when infesting barley, thus requiring adequate management. In this context, the aim of this study was to evaluate the selectivity of different herbicide treatments and weed control in the barley crop, cultivar BRS Cauê. Two field experiments were conducted in randomized blocks, with four replications. The treatments used were: pendimethalin (800 g · ha -1 ), sulfentrazone + diuron (175 + 350 g · ha -1 ), and imazaquim (150 g · ha -1 of a. e.) applied pre-emergence; and iodosulfuron (3.5 g · ha -1 ), pyroxsulam (18 g · ha -1 ), metsulfuron-methyl (3.96 g · ha -1 ), 2,4-D (670 g · ha -1 of a. e.), clodinafop-propargyl (48 g · ha -1 ), bentazon + imazamox (600 + 28 g · ha -1 ), saflufenacil (49 g · ha -1 ), bentazon (720 g · ha -1 ), carfentrazone-ethyl (120 g · ha -1 ), and imazamox (42 g · ha -1 ) applied post-emergence, with two controls (one weeded and the other infested). The use of the herbicide imazaquim caused high levels of phytotoxicity in barley. Gas exchange was less responsive to herbicide applications in relation to barley phytotoxicity and productivity. Clodinafop-propargil showed the best control of ryegrass, while the herbicides iodosulfuron, pyroxsulam, metsulfurom-methyl, 2,4-D, bentazon + imazamox, saflufenacil, bentazon, carfentrazone-ethyl, and imazaquim showed high efficiency in the control of turnip species. Imazaquim caused reduction of up to 74.7% in barley grain yield. On the other hand, iodosulufuron and piroxsulam allowed the highest grain yields of the barley cultivar, BRS Cauê, by promoting partial control of ryegrass and total control of turnip species, followed by clodinafop-propargyl and metsulfuron-methyl, which controlled ryegrass and turnip, respectively, allowing an increase in yield grain in relation to the
大麦除草除草剂的选择性和效果研究
黑麦草和萝卜是杂草,当它们侵袭大麦时,会造成高产量损失,因此需要适当的管理。在此背景下,本研究的目的是评价不同除草剂处理对大麦作物BRS Cauê杂草控制的选择性。随机分组进行2次野外试验,重复4次。使用的处理为:羽化前施用戊二甲基灵(800 g·ha -1)、磺胺酮+迪乌隆(175 + 350 g·ha -1)和伊马唑喹(150 g·ha -1);和iodosulfuron (3.5 g·哈1),pyroxsulam (18 g·哈1),metsulfuron-methyl (3.96 g·哈1),2,4 - d (670 g·哈1 e。),clodinafop-propargyl (48 g·哈1),浙江大学+ imazamox (600 + 28 g·公顷1),saflufenacil (49 g·哈1)、浙江大学(720 g·哈1)carfentrazone-ethyl (120 g·哈1),和imazamox(42克·哈1)应用萌发后,有两个控制(除草、另一个出没)。除草剂imazaquim的使用对大麦造成了高度的植物毒性。与大麦植物毒性和生产力相关,气体交换对除草剂施用的响应较小。氯地那福-丙帕吉尔对黑麦草的防治效果最好,而碘磺隆、pyroxsulam、metsulff -methyl、2,4- d、bentazon + imazamox、saflufenacil、bentazon、carfentrazone-ethyl和imazaquim等除草剂对芜菁的防治效果最好。Imazaquim对大麦籽粒产量的影响达74.7%。另一方面,碘磺脲和吡罗舒兰通过促进黑麦草的部分控制和萝卜的总控制,使大麦品种BRS Cauê的产量最高,其次是氯硝福丙炔和甲磺隆-甲基,分别控制黑麦草和萝卜,使产量相对增加
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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