Interaction between glyphosate and fluroxypyr improve mallow control
2002
Chorbadjian, R. | Kogan, M.
The interaction between glyphosate and fluroxypyr for mallow control (M. parviflora L.) was evaluated under field and greenhouse conditions. In the field, fluroxypyr at 0.2 and 0.3 kg ae/ha, and glyphosate at 1.08 kg ae/ha, were applied separately and mixed. In the greenhouse experiments, fluroxypyr at 0.11, 0.14 and 0.21 kg ae/ha and glyphosate at 0.72, 1.08 and 1.44 kg ae/ha were applied separately and in mixtures. In the field, neither glyphosate nor fluroxypyr controlled mallow, when they were applied separately. In the greenhouse, when the herbicides were applied separately, only fluroxypyr at the highest rate (0.21 kg ae/ha) was effective for mallow control. On the other hand, a positive effect on mallow control was observed when the mixtures of glyphosate and fluroxypyr were applied in field and greenhouse experiments, compared to the efficacy of each compound applied separately. According to Colby's method, results showed that the combined application of glyphosate and fluroxypyr acted synergistically for mallow control.
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