Abstract
Two research studies were conducted to evaluate weed control in potato with dimethenamid and dimethenamid-p. No significant injury was observed from most applications of dimethenamid prior to potato emergence, but injury was 20% to 38% with dimethenamid when emerging potatoes were covered slightly by soil during “drag-off” and rain occurred within 24 h. Common lambsquarters (Chenopodium album L.) and common ragweed (Ambrosia artemisiifolia L.) control with dimethenamid preemergence (PRE) did not exceed 68%. Dimethenamid-p plus metribuzin or dimethenamid-p followed by (fb) rimsulfuron postemergence (POST) controlled common lambsquarters 95% to 96% and common ragweed 71% to 92%. Annual grass control was greater with S-metolachlor alone than with dimethenamid isomers alone. Broadleaf and grass control was similar with dimethenamid and dimethenamid-p.
Resumen
Se ejecutaron dos trabajos de investigación para evaluar dimethenamida y dimethenamida-p en el control de malezas. No se observaron daños significativos con la mayoría de las aplicaciones de dimethenamida antes de la emergencia de la papa, pero el daño fue de 20 a 38% cuando las papas en emergencia estuvieron ligeramente cubiertas con suelo como consecuencia del rastrillado y lluvia dentro de las 24 horas. El control del bledo (Chenopodium album L.) y de la ambrosia común (Ambrosia artemisiifolia L.) con aplicación de dimethenamida a la pre-emergencia (PRE) no excedió el 68%. La aplicación de dimethenamida-p más metribuzina o de dimethamida-p seguida de rimsulfuron (fb) en postemergencia (POST), controló 95% a 96% de ambrosia y 71% a 92% de bledo. El control de pasto anual fue mayor con S-metolacloro solo que con isómeros del dimethenamida solos. El control de malezas de hoja ancha fue el mismo con dimethenamida que con methenamida-p.
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Richardson, R.J., Whaley, C.M., Wilson, H.P. et al. Weed control and potato (Solanum tuberosum) tolerance with dimethenamid isomers and other herbicides. Am. J. Pot Res 81, 299–304 (2004). https://doi.org/10.1007/BF02870175
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DOI: https://doi.org/10.1007/BF02870175