Biblioteca do Café
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/1
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Item Management strategies for Anredera cordifolia in coffee culture(Departamento de Engenharia Agrícola - UFCG, 2023-04-03) Silva, Paulo V. da; Ferrari, Andrea; Melo, Karolainy T. da S.; Dias, Roque de C.; Schedenffeldt, Bruna F.; Monquero, Patricia A.; Salmazo, Pedro A. V.; Medeiros, Elias S. de; Bicalho, Carolina C.; Mauad, MunirCoffee plantations installed at high altitudes and near forested areas have been highly infested with Anredera cordifolia. The objective of this work was to evaluate the effectiveness of different pre- and post-emergence herbicide treatments on A. cordifolia after mechanical mowing. A field experiment was carried out in a coffee plantation with natural infestation of A. cordifolia in a completely randomized design with a split-plot scheme and four replicates, in which the main plot an herbicides application and the subplot was the days after the initial application (DAI). The treatments were as follows: saflufenacil + glyphosate (70 + 960 g a.i. ha-1); chlorimuron + glyphosate (80 + 960 g a.i. ha-1); metsulfuron + glyphosate (6 + 960 g a.i. ha-1); flumioxazin + glyphosate (25 + 960 g a.i. ha-1), and glyphosate (960 g a.i. ha-1); with sequential application of glyphosate (960 g a.i. ha-1); glyphosate + indaziflam (960 + 75 g a.i. ha-1); indaziflam (75 g a.i. ha-1); and a control without herbicide application. Mechanical control, followed by the application of the treatments flumioxazin + glyphosate and metsulfuron + glyphosate in the first application and sequential application of indaziflam, proved to be effective. Control of this weed should be based on the removal of its plant residues from the field to reduce the regrowth and germination of aerial tubers.Item Chemical control strategies of Commelina benghalensis in coffee crop(Editora UFLA, 2019-04) Silva, Paulo Vinicius da; Barbosa, Gustavo César; Ferrari, Andréa; Tronquini, Sergio Mateus; Monquero, Patrícia AndreaThe present study aims to evaluate the control of C. benghalensis by herbicides applied in post-emergence and in pre-emergence sequentially in the infesting weed in the coffee crop. Two field experiments were carried out in a coffee crop, with natural infestation of C. benghalensis, the experimental design of both was completely randomized with 4 replicates. The first experiment, involving a single application of herbicides in post-emergence presented the following treatments: (1) saflufenacil (70 g i.a. ha -1 ); (2) glufosinate (400 g i.a. ha -1 ); (3) carfentrazone (20 g i.a. ha -1 ); (4) flumioxazin (120 g i.a. ha -1 ); (5) metsulfuron (6 g i.a. ha -1 ), and (6) witness (without application of herbicide). In the second experiment, the treatments were: (1) saflufenacil (70 g i.a. ha -1 ); (2) carfentrazone (20 g i.a. ha -1 ); (3) flumioxazin (120 g i.a. ha -1 ); (4) metsulfuron (6 g i.a. ha -1 ), all these treatments with a sequence of indaziflam (75 g i.a. ha -1 ), at 21 days after the application of the treatments (DAT) of pos-emerging; (5) Witness (without application of herbicides). In the first experiment the herbicides safluenacil and flumioxazin presented the best percentages of control in post-emergence with 90 and 85.25% respectively, at 7 DAT, keeping the control superior to 80% at 21 DAT. In the second experiment, the treatments saflufenacil and flumioxazin with indaziflam sequential, presented control of 80% and 82.5% respectively at 28DAA (Days After Application). The herbicides saflufenacil and fluxioxazin represent an option for the control of C. benghalensis in post-emergence and favor the performance of the sequentially applied indaziflam herbicide.