Spatial distribution of anthracnose (Colletotrichum gloeosporioides Penz) in avocado in the State of Mexico, Mexico

• Published in: Revista argentina de microbiología 2020-01, Vol.52 (1), p.72-81
• Main Authors: Tapia Rodríguez, Atenas, Ramírez Dávila, José F, Salgado Siclán, Martha L, Castañeda Vildózola, Álvaro, Maldonado Zamora, Fátima I, Lara Díaz, Ana V
• Format: Article
• Language: Spanish
• Subjects: Colletotrichum - isolation & purification; Geography; Mexico; Persea - microbiology; Plant Diseases - microbiology
• ISSN: 0325-7541
• DOI: 10.1016/j.ram.2019.07.004

Persea americana is a species of great nutritional and economic importance for Mexico, however, like any other agricultural crop, it is affected by pests and diseases that limit its worldwide commercialization. The phytopathogenic fungus Colletotrichum gloeosporioides is the causative agent of anthracnose in avocado and manifests itself in the early stages of fruit development as well as in post-harvest and storage, under conditions of high relative humidity (80%) and at temperatures from 20°C, causing losses economic up to 20% of production. Applying geostatistical methods the present study aims to define the spatial distribution of anthracnose in Hass avocado fruits in four municipalities of the State of Mexico during the period from January to June 2017. The results show that the distribution of anthracnose was adjusted to gaussian and exponential models in most, the infestation maps made through the kriging show more than one center of aggregation of the disease, based on it the infested surface was estimated, finding an infestation of more than 50% in the first samples and up to 98% in the samplings belonging to the month of June in all the areas studied.