Reduction of papaya rot (Phytophthora palmivora) with phosphite and Acibenzolar-S-Methyl in preharvest and postharvest

Authors

  • Thiago Alves Santos de Oliveira Universidade de Brasília
  • Luiz Eduardo Bassay Blum Universidade de Brasília
  • Elizabeth Amélia Alves Duarte Universidade Federal do Recôncavo da Bahia
  • Edna Dora Martins Newman Luz Comissão Executiva do Plano da Lavoura Cacaueira

DOI:

https://doi.org/10.14393/BJ-v34n6a2018-39550

Keywords:

Alternative control, ripening delay, papaya fruit rot

Abstract

The papaya fruit rot (Phytophthora palmivora) is responsible for significant losses. To reduce diseases, especially in areas with climate and humidity favorable to pathogens, are adopted chemical methods, which sometimes increase the cost of production and cause severe environmental impacts. Alternatively, there are products, such as, phosphites of potassium and acibenzolar-S-methyl (ASM) that might be efficient on disease control and less aggressive to environment. Phosphites of K and ASM were evaluated in this study on the control effectiveness of papaya fruit rot at different dosages in preharvest and postharvest. The severity and percentage of disease control were evaluated for each treatment. For the pre-harvest treatments (applied six days before harvest), the phosphite of K [240 g L-1 K2O, 340 g L-1 P2O5 and 50 g L-1 (Reforce® + Salicylic Acid)] at 3 or 6 mL L-1significantly reduced disease severity, and, reduced fruit ripening. On postharvest application, ASM reduced disease severity.

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Published

2018-12-14

How to Cite

OLIVEIRA, T.A.S. de, BLUM, L.E.B., DUARTE, E.A.A. and LUZ, E.D.M.N., 2018. Reduction of papaya rot (Phytophthora palmivora) with phosphite and Acibenzolar-S-Methyl in preharvest and postharvest . Bioscience Journal [online], vol. 34, no. 6, pp. 1522–1531. [Accessed5 December 2022]. DOI 10.14393/BJ-v34n6a2018-39550. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/39550.

Issue

Section

Agricultural Sciences