Files
Abstract
Every habitation produce a considerable amount of biodegradable wastes that
are discarded via dumping at various sites, in landfills, being burnt or in dumped in the river
systems. Guyana is no exception - the water ways are polluted with plants, grass is
constantly mowed from lawns, huge amounts of market refuse on a daily basis - contributes
to unsightly land pollution. Vermicomposting is the best solution to getting rid of these
biodegradable waste materials. Composting of grass, water hyacinth and a combination of
grass with water hyacinth were successful. Final compost yields were at least 30%. This
represents a huge decrease in compost volume. Therefore, vermiculture is a very efficient
method to reduce biodegradable solid waste. The physic-chemical and biological properties
of the composts were responsible to enhance growth and yield of Brassica chinensis. This
was confirmed from final soil analysis. There are two major reasons why vermicomposting is
better. Waste is converted faster. Conventional composting takes weeks to months to
convert your organic matter to compost and is very labor intensive. By using earthworms,
waste is rapidly turned into vermicompost. The vermicompost is far superior to conventional
compost. The worm castings in the vermicompost have nutrients that are highly utilizable by
plants and the castings have a mucous coating which allows the nutrients to "time release".
Vermicompost forms fine stable granular organic matter that assist in the aeration, released
mucus that are hygroscopic absorbs water and prevents water logging and improves water
holding capacity. Vermicompost added to the soil releases nutrient slowly and consistently
and enables the plant to absorb these nutrients more readily. Soils enriched with
vermicompost provide additional substances that are not found in the chemicals Earthworms
play a major role in the formation of vermicompost. Vermicompost has higher
microorganism content and the activities of microorganisms (Actinomycetes, Azotobacter,
Nitrobacter, Nitrosomonas and Aspergillus) is responsible for enhanced plant productivity
much more than would be possible from the mere conversion of mineral nutrients into more
plant-available forms. Also, during this period, these is a reduction of Gram negative cocci
bacteria and corresponding increase in Gram positive bacilli as time progresses towards the
maturity of the vermicompost in all three compost samples. This would indicate a healthier
finished product that is highly beneficial to plant growth.