El ñame (Dioscorea spp.) es un tubérculo crucial para la seguridad alimentaria en las regiones tropicales. Sin embargo, su producción se ve gravemente afectada por la antracnosis (Colletotrichum spp.), con pérdidas que superan el 80%. Aunque se emplean fungicidas químicos para su manejo, su eficacia en el control es limitada. A pesar de la relevancia del cultivo de ñame, existe una carencia de estudios que evalúen la sensibilidad de los aislados de Colletotrichum causantes de la antracnosis frente a fungicidas de síntesis química. Esta investigación tuvo como objetivo determinar la sensibilidad in vitro de aislamientos de Colletotrichum spp. causantes de la antracnosis del ñame a fungicidas químicos. El ensayo se realizó bajo un diseño completamente aleatorio con un arreglo factorial que incluyó 10 aislados, seis fungicidas y cuatro dosis. Se empleó la técnica de difusiÃ...

El ñame (Dioscorea spp.) es un tubérculo crucial para la seguridad alimentaria en las regiones tropicales. Sin embargo, su producción se ve gravemente afectada por la antracnosis (Colletotrichum spp.), con pérdidas que superan el 80%. Aunque se emplean fungicidas químicos para su manejo, su eficacia en el control es limitada. A pesar de la relevancia del cultivo de ñame, existe una carencia de estudios que evalúen la sensibilidad de los aislados de Colletotrichum causantes de la antracnosis frente a fungicidas de síntesis química. Esta investigación tuvo como objetivo determinar la sensibilidad in vitro de aislamientos de Colletotrichum spp. causantes de la antracnosis del ñame a fungicidas químicos. El ensayo se realizó bajo un diseño completamente aleatorio con un arreglo factorial que incluyó 10 aislados, seis fungicidas y cuatro dosis. Se empleó la técnica de difusiÃ...

The cowpea bean is a legume of economic importance for small producers in the Caribbean, Colombia; however, grain production is affected by MV vascular wilt, caused by Scleroctium rolsii, causing losses of up to 50 %. The objective of the research was to evaluate the effect of seed treatment in the management of MV. Two experiments were established, the first one was done in the laboratory, determining the active ingredient and dose that does not affect the emergence and development of the seedlings. The second was carried out in a mesh house, where the seeds were treated with the molecules and the best dose identified in the first experiment. The second experiment was established with the Caupicor 50 variety, under a completely randomized design with four repetitions. The treatments evaluated were the following: T0: absolute control, T1: Calcium nitrate (1.0 g l-1), T2: Azoxystrobin + D...

The cowpea bean is a legume of economic importance for small producers in the Caribbean, Colombia; however, grain production is affected by MV vascular wilt, caused by Scleroctium rolsii, causing losses of up to 50 %. The objective of the research was to evaluate the effect of seed treatment in the management of MV. Two experiments were established, the first one was done in the laboratory, determining the active ingredient and dose that does not affect the emergence and development of the seedlings. The second was carried out in a mesh house, where the seeds were treated with the molecules and the best dose identified in the first experiment. The second experiment was established with the Caupicor 50 variety, under a completely randomized design with four repetitions. The treatments evaluated were the following: T0: absolute control, T1: Calcium nitrate (1.0 g l-1), T2: Azoxystrobin + D...