2012
DOI: 10.7824/rbh.v11i1.116
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Efeitos de subdoses de glyphosate em plantas jovens de seringueira (Hevea brasiliensis Aubl.)

Abstract: -This study aimed to evaluate phytotoxic effects of glyphosate subdoses in seedlings of rubber tree (Hevea brasiliensis Aubl.). One year after seedlings planting three reduced rates of glyphosate were studied, as follows: T1 -86.4, T2 -172.8 and T3 -345.6 g e a ha -1 and T4 -control (without application). At 7, 14, 21, 28 and 180 days after application (DAA) of herbicide, scores were assigned for visual phytotoxicity, and in the last evaluation were took measurements of increase in height and in trunk diameter… Show more

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Cited by 8 publications
(7 citation statements)
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“…ha -1 , with 200 and 100%, respectively. Thus verifying that the leaf area is one of the most sensitive variables to the application of herbicide ( Figure 1A), such behavior was described by FARIAS et al (2012), who justify this effect due to the decrease of the EPSP activities, responsible for the mass augmentation and physiological effect of the plant growth.…”
Section: Resultssupporting
confidence: 62%
“…ha -1 , with 200 and 100%, respectively. Thus verifying that the leaf area is one of the most sensitive variables to the application of herbicide ( Figure 1A), such behavior was described by FARIAS et al (2012), who justify this effect due to the decrease of the EPSP activities, responsible for the mass augmentation and physiological effect of the plant growth.…”
Section: Resultssupporting
confidence: 62%
“…Existem também espécies que se mostram tolerantes às subdoses de glyphosate, como a Hevea brasiliensis (seringueira), como constataram Farias et al, (2012). Com a aplicação de 6% da dose comercial recomendada (3,0 L ha -1 do produto comercial), 75% das plantas apresentaram injúrias consideradas leves, com total recuperação aos 180 DAA, como verificado também com 24% da dose comercial.…”
Section: Resultsunclassified
“…Similar symptoms were also observed in other tree species for concentrations equal to or higher than 86.4 g e.a. ha , such as Eucalyptus urophylla and E. grandis, (Tuffi Santos et al, 2006), Genipa americana (Gusmão et al, 2011), Aspidosperma desmanthum (Rondon Neto et al, 2011), Hevea brasiliensis (Farias et al, 2012), and also in monocotyledon plants such as sorghum and corn for concentrations of 172 g e.a. ha -1 (Magalhães et al, 2001 a, b).…”
Section: Discussionmentioning
confidence: 99%