Actividad del Azimsulfuron + Metsulfuron-metil en Cyperus rotundus L. bajo condiciones controladas
Azimsulfuron + metsulfuron-metil activity in Cyperus rotundus L. under controlled conditions
Keywords:
herbicidas, sulfonylúreas, ciperáceas, coquito, translocación (es)herbicides, sulfunylurea, cyperacea, purple nutsedge (en)
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de la maleza. Sin embargo, plantas en estado de plántula fueron las más susceptibles. En otro experimento se trataron plantas maduras que ya habían producido un sistema subterráneo de cadenas de rizomas, tubérculos y bulbos. Tres semanas después del tratamiento los bulbos y tubérculos fueron separados y sembrados en arena. La brotación de estas estructuras vegetativas fue casi completamente inhibida, indicando que el herbicida se transloca hasta el sistema subterráneo. Se comprobó que la mezcla herbicida no tiene efecto preemergente sobre la brotación de tubérculos de la maleza sembrados a 1 y 3 cm de profundidad. El máximo valor registrado de inhibición
de la brotación fue de solo 11%.
La./Ha.) herbicide mixture in foliar and soil treatments on purple nutsedge (Cyperus rotundus L.). Purple nutsedge plants were treated in three development stages: Seedling,
young plants and mature plants. Shoot and underground
structures (tubers and basal bulbs) number and dry matter
28 days after treatment was reduced in the three stages
of development. However, seedling plants were the most
sensitive. In other experiment mature plants that had already produced an underground system of rhizome chains, tubers and bulbs were treated with the herbicide mixture. Three weeks after treatment bulbs and tubers were separated and sown in sand. Bulb and tuber sprouting was almost completely inhibited, indicating that the herbicide translocated until the underground system. On the other hand, the herbicide mixture doesn't have any soil activity on purple nutsedge tubers. In this case, the maximum sprout tuber inhibition was 11 percent.
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