PYROLIGNEOUS EXTRACT OF EUCALYPTUS SP. IN THE TREATMENT CHICKPEA SEEDS (Atena Editora)

Abstract

Seed treatment is one of the main measures for controlling fungal diseases. Pyroligneous extract is derived from burning wood, resulting in a liquid condensed from the smoke, which has biostimulant, chelating and phytosanitary properties, with potential in agriculture. The aim of this study was to evaluate different concentrations of pyroligneous extract from Eucalyptus sp. in the treatment of chickpea seeds. The research was conducted at the Phytopathology Research Laboratory of the Federal University of Minas Gerais, Montes Claros-MG. A completely randomized design (DIC) with four replications was used. The treatments consisted of different concentrations (0, 5, 25, 50 and 75% v/v) of pyroligneous extract from Eucalyptus sp. Aleppo chickpea seeds were immersed for 5 minutes in 100 mL of the different concentrations of pyroligneous extract. The filter paper method or "blotter test" was used for the seed health test. In each gerbox referring to 25 seeds were placed in each box. The seeds were incubated in a BOD chamber at 20 °C with a 12-hour photoperiod for eight days. After this period, the genera of fungi in the seeds were identified and the incidence of fungi in the treatments was determined. The fungi associated with the seeds were Aspergillus sp. (12%), Penicillum sp. (33%), Rhizopus sp. (3.6%) and Fusarium sp. (9.5%). The highest concentrations of Eucalyptus sp. pyroligneous extract showed greater fungal control, reaching 91% at a concentration of 75%. The pyroligneous extract of Eucalyptus sp. has potential for treating chickpea seeds.