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K. Sujatha ¹, T. Thangaraj ¹, N. Ramaswami ¹, T. Padmini ¹

Affiliations
1 Department of Horticulture, Horticultural College and Research Institute, TNAU, Periyakulam, IN

Abstract

India is currently the largest producer of cane sugar in the world accounting for 10 per cent of the world production. Juice of sugarcane (Saccharum officinarum) and sugar beet (Beta vulgaris) are rich in pure sucrose, although beet sugar is generally much less sweeter than cane sugar.

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Litty Koria ¹, T. Thangaraj ²

Affiliations
1 Department of Zoology, L. R. G. Govt. Arts College for Women, Tiruppur-641 604, T.N., IN
2 P.G. and Research Department of Zoology, Kongunadu Arts and Science College, Coimbatore, 641 029, T.N., IN

Abstract

An earthworm bioassay was conducted to assess the ecotoxicity of Annona squamosa oil cake amended soil using the species Eudrilus eugeniae. Mortality and abnormal morphology of earthworms exposed to different concentrations of the oil cake, i.e., 10, 100, 112.5, 125 and 150g/kg were examined. Mortality was measured as the ecological end point in the tests. Annona squamosa oil cake was toxic to the earthworm and the severity of the response increased with increasing concentration of the oil cake. The LC₅₀ value showed that the mortality observed was significantly different from the negative control, suggesting that it may be attributed to the effect of addition of Annona squamosa oil cake.

Keywords

Earthworm Bioassay, Annona squamosa Oil Cake, Eudrilus eugeniae, Ecotoxicity.

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G. Nithya ¹, T. Thangaraj ¹

Affiliations
1 P. G. & Research Deptt. of Zoology, Kongunadu Arts and Science College, Coimbatore-641 029, Tamil Nadu, IN

Abstract

Germination and growth of vegetables, Chenopodium album (Palakeerai) and Amaranthus sp. (Araikeerai) were observed using the red soil and red soil amended with vermicompost. Germination was slightly delayed in the vermicompost medium than in red soil, whereas the growth was more in soil containing vermicompost than the red soil.

Keywords

Chenopodium album, Amaranthus sp, Vermicompost.

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