Development and multiplication of Eisinea andrei in the manure of cattle subjected to high Trichoderma doses

Authors

  • Maria Medianeira Saccol Wiethan Universidade Federal de Santa Maria
  • Gabriel Streck Bortolin Universidade Federal de Santa Maria
  • Renata Soares Pinto Universidade Federal de Santa Maria
  • Bruno Giacomini Sari Universidade Federal de Santa Maria
  • Antonio Carlos Ferreira da Silva Universidade Federal de Santa Maria

DOI:

https://doi.org/10.14393/BJ-v34n6a2018-40009

Keywords:

Trichoderma spp., Biological product, Worm, Vermicomposting

Abstract

The efficacy of the vermicomposting and products based on the antagonistic fungus and plant growth promoter trichoderma (Trichoderma spp) is well known and studied in organic agriculture. However, for a better methodological efficiency are necessary studies to evaluate the effect of high doses of these bioproducts in the biology and development of earthworms. Thus, the present work aims to test the use of high commercial biocontrol product (ICB Nutrisolo Trichoderma) doses by evaluating the multiplication and development of Eisenia andrei. Changes in the chemical features of the substrate produced by the vermicomposting process using in natura and sterilized organic cattle manure were also assessed. Each experimental unit consisted of 6 kg of substrate (in multipurpose polypropylene box - 20 x 40 x 50 cm) containing 48 clitelate adult Eisenia andrei earthworms. ICB Nutrisolo Trichoderma was used as biological agent along with eight strains of the following species: T. koningiopsis, T. asperellum and T. harzianum. The following treatments were applied at doses of 1011 CFU kg-1 of ICB Nutrisolo Trichoderma in the presence of earthworms: T1 (0.5); T2 (1.0); T3 (2.0); T4 (4.0); T5 (8.0) and T6 (0.0). The T7 treatment was herein used in order to evaluate the chemical features of the vermicompost. It was a completely randomized design with four replications per treatment. The temperature was kept at 28°C and humidity ranged between 60 and 70%. After 60 days, the number of young and adult earthworms, and cocoons was counted; then, their dry biomass was assessed. The results found in the lethality test showed decrease in the number of earthworms treated with 4.0x1011 CFU kg-1 of ICB. The biological product doses up to 1.0x1011 CFU kg-1 did not alter the number of adult earthworms and cocoons, or the multiplication index of E. andrei in cattle waste vermicomposts. There was no influence of the tested doses on earthworms' individual development. However, doses above 2.0x1011 CFU kg-1 decreased their total biomass. The C/N ratio for all treatments indicates maturity within acceptable results for organic compounds.

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Published

2018-12-06

How to Cite

WIETHAN, M.M.S., BORTOLIN, G.S., PINTO, R.S., SARI, B.G. and DA SILVA, A.C.F., 2018. Development and multiplication of Eisinea andrei in the manure of cattle subjected to high Trichoderma doses . Bioscience Journal [online], vol. 34, no. 6, pp. 1–10. [Accessed29 November 2022]. DOI 10.14393/BJ-v34n6a2018-40009. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/40009.

Issue

Section

Agricultural Sciences