Manejo agroecológico de cochonilha Dysmicoccus brevipes (Cockerell 1893) (Hemiptera: Pseudococcidae) em abacaxi orgânico em plantios de produtores familiares no município de Careiro da Várzea – AM.

Abstract

Pineapple (Ananas comosus L. - Bromeliaceae) is a fruit of great importance for organic family farmers in the municipality of Careiro da Várzea, being one of the main crops produced and sold, especially in the Peniel do Areal community and surrounding areas. However, producers in the region face too many losses due to the insect pest Dysmicoccus brevipes, which directly impacts fruit production and, as they follow a series of requirements set out by law to be organic, they must only use affordable options that are permitted for this purpose. system. The present study aimed to evaluate the control of mealybug (D. brevipes) in organic pineapple in areas of family producers in the municipality of Careiro da Várzea through the application of plant extracts and biofertilizer. Therefore, a field experiment was conducted consisting of 4 treatments, namely the control (water), the biofertilizer, the aqueous extract of Azadirachta indica and the aqueous extract of Piper aduncum. The design was randomized blocks, with 4 treatments and 4 blocks. Four treatments were applied every 15 days and data was collected simultaneously. Mealybug sampling was carried out randomly in the planting lines, obtaining 5 plants at each collection for direct counting of insects in the aerial part using a manual magnifying glass. Negative binomial regression statistical analysis of the data was performed using the R Studio software. There was no statistically significant difference (p value less than 0.05) for any of the treatments, however the insect average indicated greater efficiency for the treatment with neem aqueous extract. There was no interference from the frequency of application on the efficiency of the treatments. Block 3 stood out in relation to the lower intensity of mealybug infestation in general.