vermicomposting of wood wastes ppt
TRANSCRIPT
VERMICOMPOSTING OF WOOD WASTES
Dr.E.SREENIVASANTechnical Manager, R&D
THE WESTERN INDIA PLYWOODS LTDBALIAPATAM
KANNUR-670010Ph:8289865990
E-Mail: [email protected]
WHAT ARE WOODWASTES? Lignocellulosic
wastes refer to plant biomass wastes that are composed of cellulose, hemicellulose and lignin
WOOD WASTESExamples
BarkSawdustPeeler wasteChipper bottom wasteChip residuesPulp sludgeCutting waste
WHAT IS VERMICOMPOSTING? Vermicomposting is essentially the
consumption of organic material by earthworms. This speeds up the process of decomposition and provides a nutrient-rich end product, called vermicompost, in the form of ‘worm castings’.
The technique yields organic fertilizers, permits safe disposal of certain organic wastes and reduces the requirement for landfill.
EARTHWORMSEarthworm gut is a bioreactor which
increases the beneficial microbial density facilitating rapid decomposition of wastes
About 3600 species of earthworms recorded in the world
Three types: a)Endogeic b)Anecic and c)Epigeic
EARTHWORMS
EARTHWORMS FOR VERMICOMPOSTING Common species
Eudrilus eugeniaeEisenia foetidaPerionyx excavatusLampito mauritii
EARTHWORMS FOR VERMICOMPOSTING DESIRABLE ATTRIBUTES
Excellent conversion efficiency: Worm should exhibit high
biomass consumption and high rate of conversion of ingested biomass to body proteins, a physiological trait required for achieving high growth rate.
Tolerance to environmental changes: Worm should have wider range of tolerance to environmental factors including adaptation to feed on a variety of organic residues
High multiplication rate: Worm should produce large numbers of cocoons with short hatching time enabling rapid population growth and, linked to this rapid growth, faster composting of organic residues.
Early maturity: Life cycle of the worm should be such that mature/adult phase is quickly reached.
Disease resistance: Worm should be disease resistant.
VERMICOMPOSTINGMethods
Pit below the groundHeap above the groundTank above the groundCement ringCommercial model
VERMICOMPOSTING
VERMICOMPOSTINGPrecautions
1.Maintain the moisture at 50-60 % level in the pit.
2.Temperature between 25-28 ºC. 3.Base material (FYM) should be partially decomposed. 4.Proper aeration should be provided
without disturbing the worms.
VERMICOMPOSTINGTanks above ground
VERMICOMPOSTINGSemi-commercial
VERMICOMPOSTSieving
VERMICOMPOSTPacking
VERMICOMPOSTSample
VERMICOMPOST Benefits
Because of the chemical nature of the vermicompost which is essentially a lignin complex with ion exchange and adsorption properties, nutrients are tenaciously held and made available slowly throughout the life of the plant.
Retain enormous quantity of waterFixation of organic carbon in soil thereby
reduce atmospheric carbon responsible for global warming
VERMICOMPOST Benefits
Productive utilization of organic waste materials It is a store-house of plant nutrients.It improves the physical, chemical and biological
properties of the soil and better crop productivity.Earthworms effectively harness the beneficial soil
microflora, destroy soil pathogen and convert organic wastes in to vitamins, enzymes and others organic compounds.
Vermicompost is becoming an alternative to conventional compost and FYM sources for organic farming.
It also controls soil as well as environmental pollution.
It maintains the soil health
VEGETABLE CULTIVATION USING VERMICOMPOST
THANK YOU