Abstract

                                A pot culture experiment was conducted during 1998-1999 to know the impact of Vermiwash on the growth and yield of African marigold along with other organic sprays such as cow dung extract, vermicast extract and cow's urine at the Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore. Observation on growth and yield parameters were taken. The results revealed that vermiwash spray enhanced the growth parameters (plant height, number of laterals, number of leaves and leaf area) and yield parameters (number of days to flowering, number of flowers per plant and flower weight). From the results it could be seen that extracts from earthworms offer a valuable resource which could be effectively exploited for increasing the production of ornamentals like marigold.

Key words : Vermiwash, Organic spray, Growth parameter, Yield parameter.