Commelina Species Control with Desiccants Alone and in Mixtures

Autor: E.D. Vasconcelos, Neumárcio Vilanova da Costa, Gustavo Moratelli, Adriana Cologni Salvalaggio, Silvio Douglas Ferreira
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Planta Daninha, Vol 35 (2017)
Planta Daninha, Volume: 35, Article number: e017165664, Published: 07 DEC 2017
Planta Daninha v.35 2017
Planta daninha
Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)
instacron:SBCPD
ISSN: 0100-8358
Popis: The objective of this study was to evaluate the chemical control of the species C. benghalensis and C. erecta with desiccants alone and mixtures, as well as the spreading of spray droplets on the leaf surfaces. The experimental design was completely randomized in a 2 x 16 factorial arrangement with four replications, totaling 32 treatments and 128 plots. The first factor is related to the species C. benghalensis and C. erecta and the second factor corresponds to the treatments carfentrazone-ethyl in doses of 15, 30, 60 g ha-1, which added 0.5% v v-1 adhesive spreader; glufosinate ammonium at doses of 100, 200, 400 g ha-1, added 0.5% v v-1 mineral oil; glyphosate at 240, 480, 960 g ha-1; carfentrazone-ethyl + glufosinate ammonium in doses of 100, 200, 400 g ha-1 being added 0.5% v v-1 of mineral oil; carfentrazone-ethyl + glufosinate ammonium in doses of 15+100, 30+200, 60+400 g ha-1 being added 0.5% v v-1 of mineral oil; and carfentrazone-ethyl + glyphosate at 15+240, 30+480, 60+960 g ha-1, which added 0.5% v v-1 of a spreader and sticker agent, besides the controls without applications. There was a difference in control between species for desiccants applied alone. For C. benghalensis there was an excellent control (> 85%) for all the treatments. However, for C. erecta the best controls involved glufosinate ammonium (200 and 400 g ha-1), carfentrazone-ethyl (30 and 60 g ha-1), glyphosate (960 g ha-1) and all mixtures with an average of 96.6% in the control. RESUMO: O objetivo deste trabalho foi avaliar o controle químico das espécies Commelina benghalensis e C. erecta com dessecantes isolados e em misturas, bem como o espalhamento das gotas de pulverização nas superfícies da folha. O delineamento experimental foi o inteiramente casualizado, no esquema fatorial 2 x 16, com quatro repetições, totalizando 32 tratamentos e 128 parcelas. O primeiro fator refere-se às espécies de C. benghalensis e C. erecta, e o segundo fator corresponde aos tratamentos: carfentrazone-ethyl nas doses de 15, 30 e 60 g ha-1, sendo adicionado 0,5% v v-1 de espalhante adesivo; glufosinate-ammonium nas doses de 100, 200 e 400 g ha-1, adicionado 0,5% v v-1 de óleo mineral; glyphosate nas doses de 240, 480 e 960 g ha-1; carfentrazone-ethyl + glufosinate-ammonium nas doses de 100, 200, e 400 g ha-1, sendo adicionado 0,5% v v-1 de óleo mineral; carfentrazone-ethyl + glufosinate-ammonium nas doses de 15+100, 30+200 e 60+400 g ha-1, sendo adicionado 0,5% v v-1 de óleo mineral; e carfentrazone-ethyl + glyphosate nas doses de 15+240, 30+480 e 60+960 g ha-1, sendo adicionado 0,5% v v-1 de espalhante adesivo, além das testemunhas sem aplicações. Houve diferença no controle entre as espécies para os dessecantes aplicados isoladamente. Para C. benghalensis, observaram-se controles excelentes (> 85%) em todos os tratamentos avaliados; entretanto, para C. erecta, os melhores controles envolveram glufosinate-ammonium (200 e 400 g ha-1), carfentrazone-ethyl (30 e 60 g ha-1), glyphosate (960 g ha-1) e todas as misturas, com média no controle de 96,6%.
Databáze: OpenAIRE
Externí odkaz: