Aplicação de silício e quitosana para a indução da resistência à Bradysia sp. em mudas de morangueiro

Abstract

The strawberry crop is of extreme importance, especially for family farmers. Nowadays, as a way of reducing crop losses, there is a tendency to convert the soil production systems built into the soil to protected cultivation with established seedlings, favoring the identification and management of new pests and diseases associated with the production system. The objective of this work was to promote the induction of resistance in strawberry seedlings against the genus Bradysia sp. in a semi-hydroponic culture system, through the application of silicon and chitosan. The experiment was conducted under a completely randomized design (DIC), with 24 experimental units, in six replicates. The cultivar Camarosa, previously standardized, and later implanted in "Slabs" with organic substrate, were used in a protected culture system. The treatments tested were 1.5 grams of silicon, 18 milligrams of chitosan and, after application of the treatments, there was a mass release of insects (Bradysia sp.) And the plants were evaluated after 30 days of release. insects. It was evaluated the root area, foliar, shoot growth, green and dry mass of roots and leaves and leaf area. For the conditions in which this experiment was carried out, the use of silicon and chitosan did not present significant results.