Epidemiological aspects of clubroot in three cruciferous species in the Garden of the Escuela Normal Superior de Pamplona, Norte de Santander

Abstract

The objective of the research was to characterize, quantify and determine the incidence and severity of clubroot disease caused by Plasmodiophora brassicae Woronin in comparison with the age of the crops, the pH of the soil and the slope of the land. Periodic sampling was carried out on the three cruciferous plants, cabbage, cauliflower and broccoli, and foliar and root data on the incidence and severity of the disease were collected. Through data and analyzing the field behavior of the affected plants, it was observed that cabbage presented the highest incidence and severity of the disease, according to data from the Area Under the Disease Progress Curve (ABCPE) in the two types of slopes (high slope and low slope). It was also observed that pH influenced the incidence of the disease in cabbage above pH 7 despite no significant difference being found. There was also no significant difference between crop species, however, a tendency was observed for the incidence and severity of the disease to be greater in plots located in areas of low slope and where water accumulated more easily.