Evaluación de cuatro herbicidas para el control de malezas en el cultivo de arroz (Oryza sativa L.) en la zona de Babahoyo

VII. SUMMARY The present investigation was carried out during the rainy season of the year 2017, in the estate of Mr. Diógenes Ledesma, located in the 3 km of the road to Pimocha. Six treatments plus a conventional control were formulated. The experimental design of randomized complete blocks (BCA) with factorial arrangement 2 x 3 + 1 in three repetitions was used and to determine the statistical differences between the means of the treatments the Tukey test was used at 95% probability. The variables studied were toxicity index, percentage of weed control, plant height, number of tillers and panicles per square meter, grains per panicle, weight of 1000 grains and yield. The application of Pyrazosulfuron ethyl allowed the crop to present a better agronomic behavior. The variables height of plant, tillers and panicles per square meter, weight of 1000 grains, grains per panicle and yield, did not present statistical significance. The variable percentage of weed control reported high statistical significance. The variable toxicity index at 7 days after the application of the herbicides showed significant differences, while at 14 days no statistical significance was evidenced. The application of Pyrazosulfuron ethyl in a dose of 225 g / ha, it was possible to obtain the highest percentage of control of weeds, plant height, tillers and panicles per square meter, weight of 1000 grains and grains per panicle. The application of Pyrazosulfuron ethyl in a dose of 225 g / ha allowed obtaining the highest yield and net benefit. Key Word: weed control, rice, herbicides.

• Autore principale: Pazos Andrade, Kent Alberto (author)
• Natura: bachelorThesis
• Lingua: spa
• Pubblicazione: 2017
• Soggetti: Herbicidas; Control de malezas; Cultivo de arroz
• Accesso online: http://dspace.utb.edu.ec/handle/49000/5030