Abstract
Greenhouse and field studies were conducted to evaluate the susceptibility of six potato (Solatium tuberosum L.) cultivars to injury by four herbicides. The White Rose cultivar was the most susceptible to injury, especially from metribuzin {4-amino-6-tert-butyl-3-(methylthio)-s-triazin-55 (4H) one}, and linuron {3-(3,4-dichlorophenyl)-l-methoxy-l-methyl-urea}. Injury was attenuated by decreasing the rate of herbicide in the range of 4.5 to 0.5 kg/ha (4 to 0.5 1b/A) and by increasing the seed piece size. Injury seemed to be associated with soil texture and was greater in a sandy loam than in a sandy clay loam soil. Greenhouse studies provided valuable leads on cultivar susceptibility to herbicides but reductions in foliar weight of 15 to 20% are required to justify any suspicion that field injury will occur.
Resumen
Se llevaron a cabo estudios tanto en el invernadero como en el campo para evaluar la susceptibilidad de 6 cultivares de papa (Solatium tuberosum L.) a los danos causados por 4 herbicidas. El cultivar “White Rose” fue el más susceptible al daño especialmente al causado por metribusin 4-amino-6-tert-butil-3-(methylthio-s-triazin-5(4H), y al causado por el linuron 3-(3,4-dichlorophenil)-l-methoxy-l-methylurea. El daño se atenuó mediante la disminución de la tasa de herbicidas en el rango de 4.5 a 0.5 Kg/ha (4 a 0.5 lb/A) y por el aumento del tamaño del pedazo de semilla. El daño pareció estar asociado con la textura del suelo y fue mayor en un suelo limoso arenoso que en uno arcillo arenoso. Los estudios de invernadero suministraron indicaciones valiosas sobre la susceptibilidad de los cultivares a los herbicidas, pero la reductión en el peso foliar del 15 al 20% fue necesaria para justificar cualquier sospecha de que el daño en el campo pueda ocurrir.
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Published with the approval of the Director, Colorado Agr. Exp. Sta. as Scientific Paper number 2133.
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Zimdahl, R.L. Differential susceptibility of potato cultivars to four herbicides. American Potato Journal 53, 211–219 (1976). https://doi.org/10.1007/BF02852492
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DOI: https://doi.org/10.1007/BF02852492