EFFECT OF FUNGICIDES AND HERBICIDES INTERACTIONS ON TOMATO DAMPING-OFF AND PLANT GROWTH | ||
| Egyptian Journal of Agricultural Research | ||
| Volume 71, Issue 3, September 1993, Pages 641-658 PDF (4.2 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1993.462474 | ||
| Authors | ||
| MONA A. EL-SHAMI1; NAGI G. H. AWAD2; NADYA A. R. ABDEL-NOUR2 | ||
| 1Plant Pathology Research Institute, Agricultural Research Centre, Giza, Egypt | ||
| 2Institute of Environmental Studies and Research, Ain Shams University, Cairo, Egypt | ||
| Abstract | ||
| Fusarium oxysporum f. sp. lycopersici and Rhizotonia solani were isolated from tomato seedlings showing damping-off symptoms. Both fungi caused high incidence of damping-off to UC-97and Super marmande tomato cultivars. The disease incidence varied according to each pathogen and the date of planting. High percentage of disease was detected when tomato seeds were planted in soil infested with F. oxysporurn f. sp, lycopersici during July, August and October. On the other hand, when tomato seeds were planted in soil infested with R. solani, the highest incidence of damping-off disease was attained during October and December. Application of Enide or Devrinol as pre-emergence herbicide was not effective in minimizing the disease incidence. Vitavax-thiram or Vitavax-captan as fungicidal seed treatment were effective in controlling the disease. However, date of sowing affected the efficiency of these fungicides. Vitavax-captan gave better disease control than vitavaxthiram during October, while the reverse was observed during July and August plantations. Application of Enide enhanced the efficacy of Vitavax-thiram against the Fusarium pathogen during october plantation while Devrinol enhanced the potency of Vitavax-captan during August plantation. The efficacy of these combined treatment against Rhizoctonia pathogen did not greatly differ from the effect of each fungicide alone. However , they enhanced its efficiency against the mixture of both pathogens. Also, the application of these pesticides affected the growth of tomato plants. | ||
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