International Journal of Plant Protection

B. M. Ilhe ¹, N. A. Musmade ², S. B. Kawade ¹

Affiliations
1 Department of Plant Pathology and Agriculture Microbiology, Mahatma Phule Krishi Vidyapeeth, Rahuri, Ahmednagar M.S., IN
2 Department of Plant Pathology and Agriculture Microbiology, Mahatma Phule Krishi Vidyapeeth, Rahuri, Ahmednagar M.S.

Abstract

Basal bulb rot of onion causes considerable damage. The causal organism was isolated from infected bulbs of onion. The fungus culture was identical as Fusarium oxysporum f.sp. cepae on the basis of morphological characters. In screening, it was observed that all onion genotypes were susceptible to highly susceptible to basal bulb rot of onion but none of the genotypes was found resistant to disease. It was observed that benomyl (0.1%), carbendazim (0.1%) and Bordeaux mixture (1%) alone and in combination, treatments benomyl + mancozeb (0.1 +0.2%) and carbendazim + mancozeb (0.1 + 0.2%) inhibited 100 per cent growth of the pathogen. Among the bioagent, Trichoderma viride inhibited maximum growth and was at par with Trichoderma harzianum.

Keywords

Onion, Basal Bulb Rot, Fusarium Oxysporum F.sp. Cepae, Chemical And Biological Control

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B. M. Ilhe ¹, N. A. Musmade ², S. B. Kawade ¹

Affiliations
1 Department of Plant Pathology and Agricultural Microbiology, Mahatma Phule Krishi Vidhyapeeth, Rahuri M.S., IN
2 Department of Plant Pathology and Agricultural Microbiology, Mahatma Phule Krishi Vidhyapeeth, Rahuri M.S.

Abstract

Basal bulb rot of onion causes considerable damage. In recent years Fusarium basal rot of onion has assumed a serious problem and hence the studies were undertaken on this disease with the objectives viz., isolation of the causal organism, its identification, pathogenicity, morphological and cultural characters. The causal organism was isolated from infected bulbs of onion. The pathogenicity of onion basal bulb rot pathogen was proved by soil inoculation method. The fungus culture was identical as Fusarium oxysporum f.sp. cepae. on the basis of morphological characters of the pathogen. Among the various cultural media used an, excellent mycelial growth and sporulation were observed on PDA, Richards agar and were followed by Czapeck's dox agar, host leaf extract, coon's agar and A. and H. medium.

Keywords

Onion, Basal Bulb Rot, Fusarium Oxysporum F.sp. Cepae

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