Allelopathic effects of pathogenic fungi on weed plants of soybean and corn crops

Authors

  • Ariane Spiassi Universidade Estadual do Oeste do Paraná
  • Lúcia Helena Pereira Nóbrega Universidade Estadual do Oeste do Paraná
  • Danielle Medina Rosa Universidade Estadual do Oeste do Paraná
  • Fábio Palczewski Pacheco Universidade Estadual do Oeste do Paraná
  • Jaqueline Senem Universidade Estadual do Oeste do Paraná
  • Gislaine Piccolo de Lima Universidade Estadual do Oeste do Paraná

DOI:

https://doi.org/10.14393/BJ-v31n4a2015-26142

Abstract

The herbicides application can be reduced with alternative methods, as pathogenic fungi use, that produces several secondary compounds in growth medium, which has phytotoxicity. Thus, the aim of this study was to determine the allelopathic activity of culture filtrate produced by pathogenic fungi: Fusarium solani, Macrophomina phaseolina Fusarium graminearum and Diplodia maydis, on germination and development of horseweed (Conyza canadensis), hairy beggarticks (Bidens pilosa) and wild poinsettia (Euphorbia heterophylla). This effect was also tested on soybean and corn crops. The experimental design was completely randomized with twenty treatments (four filtrates of fungi culture, with 0, 5, 10, 15 e 20% concentrations) and four replications. Data were submitted to analysis of variance and regression. The results indicated that filtered of Fusarium solani culture presented a negative effect on horseweed, hairy beggarticks and wild poinsettia without affecting negatively soybeans crop. Diplodia maydis provided some reduction on horseweed and wild poinsettia growth without causing damage to maize crop.The while Macrophomina phaseolina filtrate decreased a seedlings growth of wild poinsettia without affecting negatively corn. This suggests filtrates can be used to control weeds in a sustainable ecological way as well as an alternative to reduce herbicides application, thus, protecting the environment.

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Published

2015-06-30

How to Cite

SPIASSI, A., PEREIRA NÓBREGA, L.H., MEDINA ROSA, D., PALCZEWSKI PACHECO, F., SENEM, J. and PICCOLO DE LIMA, G., 2015. Allelopathic effects of pathogenic fungi on weed plants of soybean and corn crops . Bioscience Journal [online], vol. 31, no. 4, pp. 1037–104. [Accessed20 May 2022]. DOI 10.14393/BJ-v31n4a2015-26142. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/26142.

Issue

Section

Agricultural Sciences