Effect of Trichoderma harzianum on the suppression of Pratylenchus spp. in banana (Musa paradisiaca L.) variety Gran William
DOI:
https://doi.org/10.18779/cyt.v19i2.1223Keywords:
nematodes, conidia, biological control, mycoparasiteAbstract
Nematodes are one of the main plant parasitic agents responsible for the greatest losses in banana plantations. The Trichoderma genus has been proposed as a biological alternative for controlling pathogenic organisms. This research was conducted at the "La María" Campus of the Universidad Técnica Estatal de Quevedo. The objective was to evaluate the effect of Trichoderma harzianum on the Pratylenchus spp. population in banana Gran William variety. A completely randomized design (CRD) was used with six treatments and three replications: T1 (T. harzianum 1×10 4 conidia mL -1), T2 (T. harzianum 1×10 / 6 conidia mL -1), T3 (T. harzianum 1×10 / 8 conidia mL-1), T4 (T. harzianum 1×10 /10 conidia mL-1), T5 (chemical control with nematicide) and T6 (control without application). The results demonstrated that treatments with T. harzianum at the highest concentrations (T3 and T4), as well as chemical control (T5), were effective in reducing nematode decreasing the net reproductive rate. In addition, a significant effect was observed on morphological variables root length and total weight. Chemical treatment (T5) was most effective in reducing nonfunctional roots and decreasing Pratylenchus spp., followed by treatment with T. harzianum at a concentration of 1 × 10 / 10 conidia mL-1 (T4). This demonstrated the potential of T. harzianum as an effective biological alternative to chemical nematicides, contributing to nematode management in banana crops.
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