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Fungicidal activity of O-esters of benzophenone oximes.

Some acyl- and aroyl derivatives of benzophenone oximes variously benzene substituted were prepared and tested in vitro and in vivo against fungal plant pathogens of different taxonomic classes. The tested compounds showed remarkable activity, especially some O-acetyl derivatives.

Benzophenones↗

Fungicidal activity of new O-derivatives of phenylpyridylketoximes.

Some alkyl- and acylderivatives of phenylpyridylketoximes were prepared and tested in vitro and in vivo against fungal plant pathogens of different taxonomic classes. The tested compounds exhibited remarkable activities, especially when an ethyl group was present on the oxime function.

Fungi↗

Effect of plant extracts and systemic fungicide on the pineapple fruit-rotting fungus, Ceratocystis paradoxa.

Antifungal activities of extracts of sixteen plants were tested against Ceratocystis paradoxa which causes soft rot of pineapples. Xanthium strumarium was the most effective followed by Allium sativum. The effectiveness of various extracts against C. paradoxa was in the decreasing order of Meriandra bengalensis, Mentha piperita, Curcuma longa, Phlogacanthus thyrsiflorus, Toona ciliata, Vitex negundo, Azadirachta indica, Eupatorium birmanicum, Ocimum sanctum and Leucas aspera. Extracts of Cassia tora, Gynura cusimba, Calotropis gigantea and Ocimum canum showed poor fungitoxicity. Ethanol was suitable for extraction of the inhibitory substance from X. strumarium. Acetonitrile was highly toxic to this fungus. Millipore filter-sterilized extracts had a more inhibitory effect on the fungus than the autoclaved samples. Treatment of pineapple fruits infested with C. paradoxa by X. strumarium extract reduced the severity of the disease.

Ascomycota↗