Eucalyptus and Ipomoea nil phytotoxicity after herbicide application

Revista Brasileira de Engenharia de Biossistemas Pub Date : 2023-02-16 DOI:10.18011/bioeng.2023.v17.1069

Ilca Puertas de Freitas e Silva, Josué Ferreira Silva Junior, Caio Antonio Carbonari, Edivaldo Domingues Velini, Rosilaine Araldi de Castro, L. Tropaldi, João Domingos Rodrigues

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Abstract

The presence of weeds in forest estates is considered one of the biggest problems in the implantation, maintenance, and renovation of eucalyptus plantations. This research aims to evaluate the phytotoxicity of herbicides on eucalyptus and I. nil. The experiment was installed inside a greenhouse in a completely randomized design with five replications. The treatments consisted of the application of 0.2% (v/v) adjuvant with the herbicides: atrazine (2250 g i.a. ha-1), clomazone (720 g i.a. ha-1), sulfentrazone (600 g i.a. ha-1), glyphosate (1440 g i.a. ha-1), and control. The following variables were analyzed: electron transport rate (ETR), water consumption, and plant phytotoxicity. For I. nil plants treated with atrazine, it was possible to detect phytotoxicity previous to the appearance of symptoms in the visual analysis, due to the inhibition of ETR at 24 hours after application (HAA). The highest levels of phytotoxicity for eucalyptus and I. nil were obtained by glyphosate and sulfentrazone, respectively.

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桉树和Ipomoea施用除草剂后无植物毒性

林地中杂草的存在被认为是桉树种植园种植、维护和翻新中最大的问题之一。本研究旨在评价除草剂对桉树和I.nil的植物毒性。该实验以完全随机的设计安装在温室内，共进行了五次重复。处理包括施用0.2%（v/v）的佐剂和除草剂：阿特拉津（2250 g i.a.ha-1）、氯马松（720 g i.a.ha-1）、亚磺甲唑酮（600 g i.a.a-1）、草甘膦（1440 g i.a.ha-1）和对照。分析了以下变量：电子传输速率（ETR）、耗水量和植物毒性。对于用阿特拉津处理的I.nil植物，由于施用后24小时ETR的抑制作用（HAA），在视觉分析中可以在症状出现之前检测到植物毒性。草甘膦和亚磺甲唑酮对桉树和I.nil的植物毒性最高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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