INFLUENCE OF CASSAVA MILL EFFLUENT ON THE GROWTH RATE OF TWO SELECTED ARABLE CROP SPECIES (Zea Mays And Vigna Unguiculata L.)
Hydrogen cyanide is the dominant element in cassava mill effluent with several toxicological implications. Physiochemical analysis was carried out on the soil samples gotten from three different cassava tuber processing mills located at Amaoba, Umuarigha I, and Umuarigha II in Ikwuano Local Government area of Abia state. The parameters investigated were pH, nitrogen, phosphorous, organic carbon, organic matter; others were the sodium, calcium, potassium and magnesium contents. All the afore-mentioned parameters were also analyzed for control sample. The result showed that there was an increase in soil pH, nitrogen and magnesium content of the cassava mill soils. The effect on plant growth rate was studied using maize and cowpea as test crops. The number of leaves, stem girth and length was recorded for a period of eight (8) weeks. The result after eight (8) weeks showed that the growth rate of seedlings on the soil of the three different cassava mills was rapid more than that of the control. This research shows that the cyanide content of the cassava mill effluent had a stimulatory effect on the parameters measured and could serve as an efficient source of nutrient to the soil and thus to crops, making it an alternative to mineral fertilisers.
Vermicomposting of different proportion of floral waste (FW)-cattle dung (CD) mixtures were carried out under aerobic condition in a plastic bins to find the rate of depletion of biomass. The initial substrate depth of five different compositions viz. 100% FW, 75% FW, 50% FW, 25% FW and 100% CD were 25cm, 16 cm, 13 cm, 11 cm and 8 cm respectively. The rate of biomass reduction was high in 100% FW which was decreased with increasing the quantity of cattle dung. The time for substrate stabilization during vermicomposting was also found to be lesser in summer as compared to rainy season. The substrate depth variation with respect to time followed a declined curve.
Agro-homeopathy, which allows to influence biological processes of plants by either accelerating or delaying growth. Moreover, it can contribute to the control of plagues and diseases, directly promoting an increase of the yield and an improvement of product qualitative traits
Urban, industrial, biomass and biomedical wastes are being generated in huge quantities world over causing significant environmental problems including human health. Such generation of waste is on increasing trend with the increase in population along with corresponding increase in industrialization and urbanization. In order to address such an alarming issue of such waste, it has become essential to effectively manage such wastes including transforming this waste into usable product through technological development and innovation techniques which would not only take care of environmental problems but also act as economic tools to manage wastes. An effort has therefore been made by the authors of the present paper to discuss and explain the total population of class- 1 towns in India, the total anticipated quantity of waste generated and the predicted energy generation including financial feasibility along with various technological options available to transform such wastes into energy, fuel pallets, compost, and methane gas etc.