A. Mani ¹, R. J. Anandam ¹

Affiliations
1 Citrus Project and Department of Plant Pathology, Andhra Pradesh Agricultural University, Tirupati 517 502, IN

Abstract

The suitability of leaves of certain plant species, oilcakes, as well as waste products of sago industry were evaluated as substrates for mass multiplication of the nematophagous fungus, Paecilomyces lilacinus (Thorn.) Samson. Leaves of subabool and neem were found to be suitable substrates and supported a highcr spore load than tanners cassia, Pongamia and Glyricidia. Tapioca tuber and its peels also supported a moderately high spore load. Untreated thippi supported the least spore load. However, the spore load of P. lilacinus was significantly increased when thippi was soaked in KH₂Po₄ and NaNO₃ at 0.75% concentration. The oilcakes favoured the growth of P. lilacinus.

Keywords

Paecilomyces lilacinus, Substrates, Plant Leaves, Agro-Industrial Wastes, Oil Cakes.

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A. Mani ¹, I. R. Murthy ², P. Kameswara Rao ², V. Deva Prasad ³

Affiliations
1 Regional Agricultural Research Station (APAU), Palem-509 215, Mahaboobnagar District, Andhra Pradesh, IN
2 Citrus Improvement Project and Department of Entomology, S. V. Agricultural College (APAU), Tirupati-517 502, IN
3 Department of Entomology, College of Agriculture, Bapatla, Guntur, IN

Abstract

Certain seeds, tubers and ischolar_mains of plants were evaluated as substrates for mass production of the nematophagous fungus, Paecilomyces lilacinus (Thom.) Samson. Growth of P. lilacinus as measured by diameter of the colony, spore production, weight of mycelial mat and rate of growth indicated that wheat, bajra, jowar, and rice were suitable substrates for the multiplication of P. lilacinus. The population of Tylenchulus semipenetrans Cobb decreased markedly with increase in the inoculum level of P. lilacinus, However, application of P. lilacinus in the form of spore suspension was more effective than infected wheat grains in controlling T. semipenetrans.

Keywords

Paecilomyces lilacinus, Substrates, Biocontrol, Tylenchulus semipenetrans.

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