Análise perceptiva de influência do Oidium anacardii Noack em castanhas de cajueiro – anão precoce no Sítio Lagoa do Meio no município de Cuité - PB.

Abstract

Originally from Brazil, cashew (Anacardium occidentale L.) belongs to the Anacardiaceae family, which includes trees and tropical and subtropical shrubs, being found in most of the tropical world and throughout Brazil in diverse ecosystems, especially in the Northeast offering conditions climate favorable to their development. It is a permanent agriculture, which has contributed to the socioeconomic development of the municipality of Cuité-PB. The orchard where this research was conducted is located 1.5 km from the city of Cuité on site Half lagoon with precocious dwarf cashew in a period of two years aiming to realize a perceptive analysis of the incidence of powdery mildew (Oidium anacardii Noack ) fruits on (nuts) and compare their morphological and biometric characteristics resulting from its attack on BRS 189 clones CCP 76 and FAGA 11 (all precocious dwarf cashew) provided by Nursery Eldorado - Guanacés - Ceará, deployed in 2009 in disuniform conditions It is collected samples from the 2014 and 2015 crops by applying the methods of analysis of 50 specimens of brown each clone. Disease severity was assessed by observation and photographic means test, using images and comparing them with other works published with this fungus. The occurrence of Oidium sp in nuts negatively affected their biometric and morphological characteristics, as well as almonds and commitment of the 2013/2014 crop being reassessed in 2014/2015 after the application of mineral oil in the same clones with positive results and satisfactory, making this method an alternative in improving the production of this plant.