Determinación de tres típos de control de Neopestalotiopsis sp. causante de la pudrición de corona en frutilla (Fragaria x ananassa D.) var. Albión en etapa de desarrollo.

Abstract

This research determined three types of control of Neopestalotiopsis sp. causing crown rot in strawberry (Fragaria ananassa D) var. Albion during its development. A randomized complete block design was used (RCBD) in subdivided plots with nine treatments and three replicates, each treatment contained different amounts of fertiplus, coconut fibre, potassium sulphate and chicken manure as fertilizers; with Trichoderma spp. treatments, Azoxystrobin, chlorothalonil or Pyraclostrobin as preventive control of Neopestalotiopsis sp, according to the case mentioned in the methodology. In all the treatments, including the control, the percentage of shoot emergence, plant height, number of crowns, vigor, incidence, and severity of Neopestalotiopsis sp. were the variables evaluated, these values were taken every 15 days after the first 30 dat. In the experimental plot, the target disease was not present, so the variables incidence and severity of the disease were quantified with a value of zero. Regarding plant development, T3 plants registered the highest values for height, with significant differences (P<0.05) with respect to the control. In the number of crowns and vigor, all treatments showed similar behaviors. Plant vigor was high during the study period. The absence of the disease did not rule out its existence in the area, and further related studies will be necessary.