Efficacy of dimethyl disulfide (DMDS) applied alone or in co-application with metham sodium in controlling carnation root rot infection in Antalya (Turkey)

T. Fouillet, N. Le-Roch, E. Kûkürt
The efficacy of dimethyl disulfide (DMDS) applied alone or in co-application with metham sodium (MS) was evaluated for the management of carnation root rot (Fusarium spp.) in the Antalya region (Turkey). The trial was conducted according to a randomized block experimental design, with six treatments, and four replicates per treatment. The treatments were: DMDS applied alone at 600 L ha-1, DMDS+ MS at rates of 200 + 400, 300 + 400, and 400 + 400 L ha-1, MS alone at 1200 L ha-1, and an untreated control (UTC). These fumigants were applied with water through a drip irrigation system (DMDS with a Dosatron pump and MS with an electrical pump) one month before planting. All treatments with DMDS were covered with a totally impermeable film and the MS treatment with a polyethylene film. At 90 days after planting (DAP), DMDS (600 L ha-1) and DMDS + MS treatments at 300 + 400 and 400 + 400 L ha-1 gave the best efficacy against Fusarium spp.: 79.4, 84.8, and 90.9%, respectively. At 180 DAP, all fumigant treatments were significantly better at controlling Fusarium spp. than the UTC. At 180 DAP, DMDS (600 L ha-1) and DMDS + MS treatments at 300 + 400 and 400 + 400 L ha-1 performed well. Efficacy was evaluated at 86.7, 78.7, and 86.7%, respectively. All fumigant treatments containing DMDS demonstrated significantly better control of Fusarium spp. compared to the MS applied alone at a dose rate of 1200 L ha-1 at both 90 and 180 DAP. At harvest, the greatest yields were seen with DMDS (600 L ha-1) and DMDS + MS treatments at 300 + 400 and 400 + 400 L ha-1. Based on the results of this trial, DMDS applied alone and in combination with MS are promising tools for the control of carnation root rot infection in Turkey.
Fouillet, T., Le-Roch, N. and Kûkürt, E. (2020). Efficacy of dimethyl disulfide (DMDS) applied alone or in co-application with metham sodium in controlling carnation root rot infection in Antalya (Turkey). Acta Hortic. 1270, 231-234
DOI: 10.17660/ActaHortic.2020.1270.28
https://doi.org/10.17660/ActaHortic.2020.1270.28
dimethyl disulfide, soil fumigant, carnation, yield, metham sodium, co-application
English

Acta Horticulturae