Effect of fungicidal seed treatment on seedborne fungi, germination and seedling vigour of rusty shield bearer (Peltophorum ferrugineum Decne, Benth.).
Seedborne fungi isolated during germination test from the treated seeds of rusty shield bearer (Peltophorum ferrugineum [Peltophorum pterocarpum], collected from Pantnagar, Uttar Pradesh, India) were Alternaria alternata, Alternaria tenuissima, Aspergillus aculeatus, Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Aspergillus versicolor, Curvularia clavata, C. lunata [Cochliobolus lunatus], Fusarium sp., F. equiseti [Gibberella intricans], F. longipes, Paecilomyces variotii, Penicillium sp., Penicillium chrysogenum, Rhizoctonia solani and Rhizopus stolonifer. Fungicidal seed treatment was effective in reducing the fungal population sufficiently. Amongst fungicides tested, namely, carbendazim, captan, thiram, captafol, mancozeb, emisan [2-methoxyethylmercury chloride], and carbendazim + thiram (1:1), seed treatment with carbendazim + thiram (1:1), followed by mancozeb, captan, and thiram were effective in paper towel method. Germination counts increased considerably on captafol-treated seeds followed by mancozeb, emisan and captan, in paper towel method. Highest germination counts were obtained by thiram-treated seeds followed by carbendazim and captafol in the sand method. Germination index was also highest in thiram-treated seeds compared with the untreated control.