Antagonistic effects of fungal isolates and two commercial bioproducts in the control of sugar beet cyst nematode, Heterodera schachtii
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The biological control of Heterodera schachtii, was investigated using Trichoderma harzianum, Talaromyces flauvs, Fusarium solani and Pochonia chlamydosporium antagonistic fungi isolated from sugar beet cyst nematode in Isfahan Province of Iran. Their effects were compared to those of two commercial bioproducts including Marigold (Amit Biotech Pvt. Ltd., India) and TRICHO-MIX H.V. (Fanavaran Hayat-e Sabz Co., Iran) in a completely randomized design greenhouse experiment with five replicates. Fungal isolates grown on sterile wheat seeds were added to the field soil and or pasteurized soil at the rate of 10 grams per pot along with Marigold and TRICHO-MIX H.V. at 0.2 and 2 grams per pot respectively. Pots were kept in a greenhouse at 25±2°C, with 70±10% RH for 90 days. Analysis of the variance of the results was first performed and comparisons of the means were done using Duncan's multiple range test by SAS 9.1 statistical software. The results showed that there were significant differences in final population density between treatments compared with nematode alone. T. harzianum128, Marigold, T. harzianum 93, TRICHO-MIX H.V., F. solani, T. flavus 94, T. flavus 134 and P. chlamydosporium reduced final population by 65.08, 60.72, 53.08, 47.99, 45.81, 42.17, 41.45 and 20.35%, respectively. Fresh and dry weight of the above and below ground and length of the stem and the root of sugar beet plants were significantly different in the pasteurized and field soil. Plants treated with Fusarium and Verticillium showed higher growth compared to the other treatments.
Language:
Persian
Published:
BioControl in Plant Protection, Volume:5 Issue: 2, 2018
Pages:
1 to 12
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