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ABSTRACT
The physico-chemical analysis of the tannery effluent showed high alkalinity, BOD, COD and more total dissolved salts. Effects of various concentrations of tannery effluent (10, 30 50, 70, 90 & 100 %) were tested on seed germination and biomass production of black gram (Vigna mungo) seedlings. The 10 per cent of tannery effluent treatment showed best growth (100 %) and biomass (4.25 %) production.
Key words : Tannery effluent , Black gram, Bio mass, Morphology.
INTRODUCTION
Vellore district is one of the important districts of Tamil Nadu where more than 1200 tanneries of both large and small scale are concentrated. The tannery industries have been in existence in the Vellore District for the past 100 years. This would reveal the level of contamination in the Palar river belt. Nearly 10,00,000 gallons of effluent has been discharged per day in the Palar river basin. Most of the farmers cultivate the crop with nearby industrial area without knowing of about toxic level (Alvarez-Bernal et al 2006). The present work has been carried out to assess the effect of tannery effluent on seedling growth and biomass production of blackgram (Vigna mungo) seedlings. Among the 10 varieties, variety [ADT- 3] was highly tolerant to effluent treatment and this paper report suitable concentration for irrigation purposes.
MATERIALS AND METHODS
The tannery effluent was collected from the outlet of the tannery industry K.R. Leathers at Ranipet , Vellore district, Tamil Nadu.Ten experimental seeds [ADT- 3, ADT- 5, TMV- 1,VAM-1, K-1, VAM-2, APK-1, T-9, VAM-3 & IPU 94-1] varieties of Vigna mungo were collected from Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu.
The tannery effluent collected from the industry was analysed for various physico-chemical properties in Salem ITA laboratory as...