deriva simulada de formulações comerciais de glyphosate sobre maracujazeiro amarelo drift simulation of glyphosate commercial formulations on yellow passion fruit growth

Clicks: 326
ID: 216435
2008
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Abstract
Objetivou-se com este trabalho avaliar os efeitos da deriva de formulações comerciais de glyphosate no desenvolvimento de plantas jovens de maracujazeiro amarelo. O trabalho foi realizado em casa de vegetação do Departamento de Fitotecnia da Universidade Federal de Viçosa, durante o período de março a abril de 2007. Foi utilizado o delineamento experimental de blocos casualizados, em esquema fatorial 3 x 4 + 1, em que três foram as formulações de glyphosate e cinco foram as doses utilizadas acrescidas de testemunha sem herbicida. O trabalho foi conduzido com cinco repetições, sendo cada planta considerada como parcela experimental. As formulações comerciais aplicadas foram Roundup Transorb®, Roundup Original® e Zapp QI®, utilizando-se as seguintes doses (g e.a ha-1): 43,2; 86,4; 172,8; e 345,6 g ha-1. Aos 28 dias após a aplicação (DAA), avaliaram-se os comprimentos da parte aérea, da raiz e total (cm); o diâmetro do caule (mm); o número de folhas e de ramificações primárias; a massa seca da parte aérea e da raiz das plantas (g); e a área foliar por planta (cm²). Aos 7, 14 e 28 DAA, avaliou-se, visualmente, a porcentagem de intoxicação das plantas. O glyphosate em deriva simulada, independentemente das formulações utilizadas, ocasionou injúrias no maracujazeiro amarelo, acarretando redução no crescimento e desenvolvimento das plantas. As formulações Roundup Transorb® e Roundup Original® foram mais prejudiciais às plantas que o Zapp Qi®. O maracujazeiro amarelo mostrou-se suscetível à deriva, devendo o glyphosate ser usado com cuidado, de maneira a atingir somente as plantas daninhas a serem controladas.
The aim of this work was to evaluate the effects of drift simulation of commercial formulations of glyphosate on the growth of young plants of yellow passion fruit. The work was carried out at the Plant Science Department of the Universidade Federal de Viçosa (MG), Brazil, from March to April 2007. The experiment was arranged in a completely randomized block design, with five replications, in a factorial 3 x 4 + 1, consisting of three glyphosate formulations and five doses, (one being the control without herbicide). Each plot was constituted by one plant. The applied doses of glyphosate were 43.2; 86.4; 172.8 and 345.6 g ha-1, using the commercial formulations: Roundup Transorb®, Roundup Original® and Zapp QI®. After 28 days of application, aerial part, root and total length (cm), stem diameter (mm), number of leaves and primary ramifications, aerial part and root dry mass,(g) and the foliar area per plant (cm²) were evaluated. After 7, 14 and 28 application days, intoxication percentage of the plants was also evaluated. Regardless of the formulations used, glyphosate drift simulation caused injury to the yellow passion fruit, reducing plant growth. The herbicides Roundup Transorb® and Roundup Original® were more harmful than Zapp Qi®. The yellow passion fruit was susceptible to drift simulation; thus, glyphosate must be used carefully, so as to reach only the weeds to be controlled.
Reference Key
jnior2008plantaderiva Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A. Wagner Júnior;L.D. Tuffi Santos;C.E.M. Santos;J.O.C. Silva;L.D. Pimentel;C.H. Bruckner;F.A. Ferreira
Journal anti-cancer agents in medicinal chemistry
Year 2008
DOI
10.1590/S0100-83582008000300024
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000300024
Keywords
weeds herbicide passiflora sppbiology (general)botany

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