Inhibition of phytopathogenic fungi with bamboo tar.

Fungicidal activity of bamboo tar against the phytopathogenic fungi Sphaerotheca fuliginea,Botrytis cinerea,and Alternaria solani,Fusarium graminearum,Rhizoctonia solani,Valsa mali,Sclerotinia sclerotiorum,Pyricularia oryzae,Bipolaris maydis,Fusarium oxysporum f. vasinfectum,Fusarium oxysporum f. cucumerinum,Venturia nashicola,Glomerella cingulata was tested using the colony growth diameter test method and using potted plants in a greenhouse. A comparison of bamboo tar at 2 000 mg·L-1 and methyl 2-[(4,5-dihydro-4-methyl-5-oxo-3-propoxy-1H-1,2,4-triazole-1-carboxamido) sulfonyl] benzoate at 200 mg·L-1 using the control was made. Results for bamboo tar showed that against Sphaerotheca fuliginea the preventive effect was 79.1% and the curative effect was 78.4% ; whereas for Botrytis cinerea the defensive effect was 42.4% and the curative effect was 46.9%. However,no significant differences were observed between bamboo tar and triadimefon(P0.05). These results demonstrated that bamboo tar had anti-fungal actions and may be a new potential agricultural fungicide in future.