TY - JOUR AU - Esqueda-Esquivel, Valentín PY - 2003/09/19 Y2 - 2024/03/28 TI - Evaluation of the herbicides Crosser and Vaquero for weed control in tropical grasslands. JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 14 IS - 2 SE - Articles DO - 10.15517/am.v14i2.11946 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11946 SP - 177-183 AB - <p>During the 2001</p><p>rainy season, two experiments were conducted in La Mancha,</p><p>Veracruz, Mexico, in order to evaluate the effect of the</p><p>herbicides Crosser (15 g of picloram + 150 g of 2,4-D/L) and</p><p>Vaquero (30 g of triclopyr + 120 g of 2,4-D/L) for controlling</p><p>Lagascea mollis Cav. and Baltimora recta L. in a grassland of</p><p>Cynodon plectostachyus Vanderyst. In 2002, the experiments</p><p>were repeated in La Colonia Independencia, Ver., in a</p><p>grassland of Digitaria decumbens Stent., infested with Senna</p><p>obtusifolia (L.) Irwin &amp; Barneby. Both herbicides, Crosser</p><p>and Vaquero were applied at 0.75, 1, 1.25, 1.5 and 2 l/100 l of</p><p>water; Full-Mina 4 (480 g of 2,4-D/L) at 1 and 2 l/100 l of</p><p>water, and Esteron 47-M (400 g of 2,4-D/L) at 2 l/100 l of</p><p>water, were also evaluated and a weeded control was</p><p>included. A Completely Randomized Block Design with four</p><p>replications was used for all the experiments. Weed control</p><p>and grass toxicity were evaluated at 15, 30 and 60 days after</p><p>treatment application. Crosser controlled B. recta and S.</p><p>obtusifolia at 0.75 l/100 l of water, whereas to control L.</p><p>mollis, it was necessary to apply it at 1.5 l/100 l of water.</p><p>Vaquero also controlled B. recta and S. obtusifolia at 0.75</p><p>l/100 l of water, but it had no good control of L. mollis. None</p><p>of the herbicide treatments caused any toxicity to the grasses.</p> ER -