Fungicidal Seed Treatment And Foliar Spray In Relation To Rhizoctonia Solani Infection In Coffee

P  Venkatasubbaiah,; K  M. Safeeulla,; M  Satish Chandra Prabhu,

Fungicidal Seed Treatment And Foliar Spray In Relation To Rhizoctonia Solani Infection In Coffee

P Venkatasubbaiah | K M. Safeeulla | M Satish Chandra Prabhu

Abstract:

In vitro seed treatment with carboxin, carbendazim, benomyl, quinto-zene, triadimefon and thiophanate-methyl enhanced the percent germination of Coffea arabica and C. canephore. The percentage of seed germination and the relative growth of hypocotyl were closely related to the concentration of the fungicide used. There were no phytotoxic symptoms in the seedlings obtained from the treated seeds except those treated with triadimefon. Either seed treatment or foliar spray of the fungicides generally reduced Rhizoctonia solani infection in vitro. Of the fungicides used. carboxin either as seed dressing or foliar spray gave the most promising results followed by thiophanate-methyl and carbendazim.

References:

Anonymous, 1901. Control of collar rot of coffee. Fourteenth Annual Detailed Technical Report, Coffee Board Research Department, 1960-61. 133-135.
Anonymous. 1965. Fungicidal control of pre- and post-emergence damping off of coffee seedlings. Eighteenth Annual Detailed Technical Report, Coffee Board Research Department, 1964-65.79-80.
Filani, G.A. 1975. The occurrence and prevention of root and stem rot of coffee seedlings in Nigeria, Plt. Dis. Rept. 59: 137-139.
Gomez. Q.R. and Baeza, A.C.A. 1978. Control of Rhizoctonia solani in germinators of coffee, Cenicafe 29:56-58.
Venkataramaiah, G.H. 1964. Evaluation of fungicides in the control of post-emergence damping off of coffee seedlings caused by Rhizoctonia solani. Ind. Coffee, 28:257-263.
Venkatasubbaiah, P., Safeeulla, K.M. and Shetty, H.S. 1983. Phenolic contents of coffee seedlings as influenced by Rhizoctonia solani. Ind. Phytopath. In press.