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library name : انستیتو تغذیه دانشگاه علوم پزشکی شهید بهشتی
Material Type : Latin Articles
Language of Document : English
Record Number : 61962
Doc. No : 618A
Main Entry : PARTHASARATHI K.*
Title & Author : INFLUENCE OF MOISTURE ON THE ACTIVITY OF PERIONYX EXCAVATUS (PERRIER) AND MICROBIALعNUTRIENT DYNAMICS OF PRESSMUD VERMICOMPOST [Article]
Title : IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)
Volume Number : , Vol.4 ؛ No.3
Date : , (2007)
page : : 147 - 156
Abstract : Moisture play a crucial role in vermicomposting of pressmud )filter cake( )P(. Five levels of moisture contents of pressmud )55-57percent, 60-62percent, 65-67percent, 70-72percent and 75-77percent( at 31░آ2▒آC on earthworm activities )growth, reproduction and recovery rate of vermicompost( of Perionyx excavatus )Perrier(-an indigenous species and total microbial population, activity and nitrogen, phosphorous, potassium contents in the P vermicompost, over 60 days at an interval of 15, 30, 45 and 60 days have been studied. More and better worm biomass, cocoon production, hatchling number and rate of compost recovery were found in the 65- 67percent moisture. Besides this level, 70-72percent and 60-62percent moisture were adequate. On the other hand, 55- 57percent and 75-77percent moisture did not have the desired effects on the growth and reproduction of earthworms and on vermicompost production. Enhanced microbial population and activity and nitrogen, phosphorous, potassium contents were found in fresh vermicomposts from 65-67percent moisture than other moisture levels due to the ideal moisture of P for better multiplication of microbial population while passing through the worm gut with more activity, thereby enhancing the mineralization process resulting enhancement of nitrogen, phosphorous, potassium contents, whereas these decreased with decline in moisture content, immobilization and inactivation of microorganisms and/or increase in time )aging(.
Descriptor : MOISTURE CONTENT
Descriptor : PRESSMUD
Descriptor : PERIONYX EXCAVATUS
Descriptor : REPRODUCTION
Descriptor : VERMICOMPOSTS
Descriptor : MICROBIAL ACTIVITY
Descriptor : NUTRIENT CONTENTS
 
 
 
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