Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 8, Issue 3, 2006; Page No.(679-684)

IMPROVEMENT OF SEED QUALITY AND FIELD EMERGENCE OF MAIZE SEEDS BY USING BOTANICALS

S. CHANDRA NAYAKA, S.R. NIRANJANA AND H.S.SHETTY

Abstract

Maize (Zea mays L.) is an important cereal crop worldwide. Maize seed samples were collected and evaluated for mycoflora, germination and vigour. Pathogenicity test was conducted. An attempt has been made to manage these fungal pathogens, which are responsible for major seed and seedling disease in maize. Plant extracts were used for the management of these pathogenic fungi. In seed health testing, about 5 seed-borne fungal species were recorded among which Fusarium verticilloides, Botryodipodia theobrorrule, Nigrospora oryzae, and Trichoderma viride were prominent. Pathogenicity test revealed that these pathogens could harbour in all the components of the seeds and transmit from seed to seedlings. All the plant extracts reduced the incidence of B. theobromae, F. verticilloides, F. pallidoroseum, N. oryzae, and Penicilhum spp.. to a greater extent which int-urn improved germination and seedling vigour. Comparatively Allium saw= extract reduced the incidence of fungi to a maximum extent. Zin giber officinalis resulted in enhanced growth of seedlings and field emergence.

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