Abstract

SAMPAIO, Erik G. et al. Pyroligneous extract in the control of Meloidogyne enterolobii in guava plants cv. Paluma. Rev. de Ciências Agrárias [online]. 2022, vol.45, n.3, pp.51-60.  Epub July 14, 2022. ISSN 0871-018X.  https://doi.org/10.19084/rca.26524.

Meloidogyne enterolobii, is currently the main phytosanitary problem of the guava production culture (Psidium guajava), leading to the death of entire orchards since effective control measures are not available. Control with synthetic nematicides has not been efficient, and this has resulted in the search for alternative methodologies, being developed research with organics materials, among them, the pyroligneous extract. Therefore, the main objective of this work was to evaluate the influence of pyroligneous extract on the control of M. enterolobii in guava (cv. Paluma). The experimental design was completely randomized, with 11 treatments, corresponding to extract concentrations (0.0%-control; 0.5%; 10%; 15%; 20%; 25%; 30%; 35%; 40%; 50% and 100%), with five repetitions/treatment. Soil infestation with 5,000 eggs/juveniles was carried out 10 days after the transplanting of seedlings. After 96 hours, 100 mL of pyroligneous extract was applied to the soil. The evaluations were done 90 days after treatments. It was observed that all concentrations were efficient in the control of M. enterolobii, with more accentuated reductions in parasitism and reproduction as the extract concentrations increased.

Keywords : Psidium guajava; alternative control; root-knot nematodes.

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