Non-parametric analysis in the comparison of bioinsecticides to combat pests in guava trees

Authors

  • Marina Rodrigues Maestre Universidade Estadual de Mato Grosso do Sul - UEMS
  • Inessa Steffany Torres de Oliveira Universidade Federal da Grande Doutrados (UFGD)
  • Isaias de Oliveira Agência de Desenvolvimento Agrário e Extensão Rural – AGRAER
  • Héber Ferreira dos Reis Agência de Desenvolvimento Agrário e Extensão Rural – AGRAER
  • Elisângela de Souza Loureiro Universidade Federal do Mato Grosso do Sul (UFSM)
  • Manoel Araécio Uchoa Universidade Federal da Grande Doutrados - UFGD
  • Mariana Palachini de Oliveira Universidade Federal da Grande Doutrados - UFGD
  • Marcos Gino Fernandes Universidade Federal da Grande Doutrados - UFGD

Keywords:

Metarhizium anisopliae, Beauveria bassiana, Triozid nymphs, Friedman, Nemenyi

Abstract

Consuming fruits treated with chemical insecticides can cause damage to your health. Biological insect control provides effective results in pest control. This work aims to compare the bioinsecticides Metarhizium anisopliae (Metsch.) - "Ma" and Beauveria bassiana (Bals.) - "Bb" on triozid nymphs present in the aerial part of guava trees, in the State of Mato Grosso do Sul. A randomized experiment was carried out in 4 blocks, with 7 treatments: a control - "T" and one, two and three applications of each bioinsecticide - "Ma1, Ma2, Ma3" and "Bb1, Bb2, Bb3", where numbers 1, 2 and 3 correspond to the number of applications, respectively. Five evaluations were carried out after the first application of treatments: after 21, 28, 35, 42 and 49 days. The normality and homoscedasticity of the residuals were not met. As a non-parametric alternative to the Analysis of Variance (ANOVA) test, the Friedman test was used for each evaluation separately to compare the homogeneity of the treatments and joining the 5 evaluations. When there was a significant difference between treatments, the Nemenyi test was used to compare pairs of treatments for data from a block design. With 10% significance, in the first evaluation there was a difference between T and Bb2; in the second one, between T and Ma3; combining the five evaluations, between T and Ma3. These results indicate that the application of the bioinsecticide is efficient when compared to the treatment using only the control.

Keywords: Metarhizium anisopliae; Beauveria bassiana; Triozid nymphs; Friedman; Nemenyi.

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Published

31-12-2023

How to Cite

Maestre, M. R., Oliveira , I. S. T. de ., Oliveira , I. de ., Reis , H. F. dos ., Loureiro , E. de S. ., Uchoa , M. A. ., … Fernandes , M. G. . (2023). Non-parametric analysis in the comparison of bioinsecticides to combat pests in guava trees. Sigmae, 12(3), 93–98. Retrieved from https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/2250