草甘膦喷施量、剂量及时间在防治毛斑尿赤症中的作用

IF 0.6 4区农林科学 Q4 AGRONOMY

Bioagro Pub Date : 2021-08-24 DOI:10.51372/bioagro333.1

H. M. Fialho e Moraes, Lino Ferreira, Wendel M. de Souza, Rodrigo Magalhães Faria, Marco Moreira de Freitas, P. Cecon

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引用次数: 0

摘要

为了优化机械使用，除草剂的施用在昼夜的不同时间进行。因此，了解将要使用的杀虫剂以及喷洒量和喷洒时间如何影响产品的有效性是非常重要的。因此，本工作的目的是研究喷雾量和不同施用时间对不同剂量草甘膦防治灰蝶的影响。治疗采用5 x 3 x 2析因方案，采用四次重复的随机区组设计。评估了五剂草甘膦（0；1080；1440；1800和2160 g∙ha-1∙a.e.）、三次施用（上午、下午和晚上）和两次喷雾量（50和100 L·ha-1）。除了干物质的积累和再生生长的叶面积指数外，在施用后21天进行对照评估。对于上午和下午进行的施用，在不干扰施用量和测试剂量的情况下，获得了令人满意的草控制。晚用会降低草甘膦在褐草焚烧中的有效性。

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Spray volume, dose and time of day of glyphosate application in the control of Urochloa brizantha

In order to optimize machinery use, the application of herbicides has been performed at different times of the day and night. Therefore, knowledge about the pesticide that will be used and how the spray volume and time of application affect the effectiveness of the product is very important. Thus, the objective of this work was to study the influence of spray volume and different time of application on the control of Urochloa brizantha by different doses of glyphosate. The treatments were arranged in a 5 x 3 x 2 factorial scheme in a randomized block design with four replications. Five doses of glyphosate (0; 1080; 1440; 1800 and 2160 g∙ha-1∙a.e.), three times of application (morning, afternoon and evening) and two spray volumes (50 and 100 L·ha-1) were evaluated. A control assessment was performed at 21 days after application, in addition to the accumulation of dry matter and the leaf area index on the regrowth. A satisfactory control of the grass was obtained for applications performed in the morning and afternoon, without interference of the volume applied and the doses tested. Evening application reduces the effectiveness of glyphosate in Urochloa brizantha burndown.

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来源期刊

Bioagro Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.40

自引率

37.50%

发文量

期刊介绍： Bioagro es una revista científica del Decanato de Agronomía de la Universidad Centroccidental “Lisandro Alvarado” (UCLA). Su periodicidad es cuatrimestral y se publica en los meses de enero, mayo y septiembre. Cada trabajo es revisado por al menos dos especialistas en el área, externos a la revista, de cuya opinión depende la aceptación definitiva. Se utiliza sistema de arbitraje doble ciego. La revista va dirigida, fundamental pero no exclusivamente, a profesionales y técnicos del área agrícola. Su objetivo es publicar trabajos científicos originales e inéditos en ciencias agrícolas que enfoquen aspectos de agronomía, botánica y propagación de plantas, entomología y zoología, suelos, fitopatología y protección vegetal, ingeniería agrícola, genética y mejoramiento de plantas, ecología, procesamiento de productos agrícolas, biotecnología y sociales. También pueden ser publicados artículos cortos en los que se presenten descubrimientos científicos, desarrollos tecnológicos y resultados de diagnósticos integrales, en la modalidad de Notas Técnicas. En Venezuela, se encuentra en las bibliotecas de todas las universidades e institutos de educación superior que ofrecen carreras agronómicas, así como de los entes oficiales de investigación agropecuaria. En el exterior, la revista llega a universidades y/o institutos de investigación agrícolas de todos los países de América Latina así como Estados Unidos, Canadá y España.