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Composting efficency of indigenous and introduced earthworms (Record no. 26185)

MARC details
000 -LEADER
fixed length control field	05524nam a2200193Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field	OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20220216150948.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	140128s9999 xx 000 0 und d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number	632.6
Item number	JIJ/CO
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name	Jiji T
245 ## - TITLE STATEMENT
Title	Composting efficency of indigenous and introduced earthworms
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc.	Vellayani
Name of publisher, distributor, etc.	Department of Agricultural Entomology, College of Agriculture
Date of publication, distribution, etc.	1997
502 ## - DISSERTATION NOTE
Degree type	PhD
520 3# - SUMMARY, ETC.
Summary, etc.	Eight species of earthworm belonging to three families were identified from five different soil types of southern Kerala. The identified species were Megascolex cochinensis, M.konkanensis, M.trivandranus, M.trilobatus, Perionyx, sansibaricus, Pheretima heterochaeta (Megascolecidae), Pontoscolex corethrurus (Glossoscolecidae) and Drawida sp. (Moniligastridae). M.cochinenses and corethrurus were ubiquitous. P. sansibaricus was confined to forest soil and red soil. Forest soil with high water holding capacity, organic carbon content and acidic pH had the highest total count of worms and the highest species diversity.<br/><br/> The exotic species Eudrilus eugeniae was more efficient for composting in terms of duration for composting and biomass production. However, the multiplication rate of the indigenous P. sansibaricus was more than that of E.eugeniae.<br/><br/> In field conditions, when the same weight of worms was used, the time taken for composting was found equal for E. eugeniae and P. sansibaricus. However, the biomass recovery of earthworm was more in E. eugeniae.<br/><br/> Both species performed well in the rainy season, compared to hot summer months. The breeding potential, time required for composting and decomposition rate were significantly superior from june to September. There was posititve correlation between juvenile count and rainfall and negative correlation with maximum temperature with respect to E.eugeniae. In P. sansibaricus adult and juvenile counts expressed positive correlation with rainfall and humidity and negative correlation with maximum temperature.<br/><br/> Space was found to be a determining factor in the growth and multiplication earthworms.<br/><br/> The cocoons of E.eugeniae required 29+ 1.10 days for hatching. The hatching rate was only 56.25 + 1.19 percent in laboratory condition. The mean number of juvenile hatched /cocoon was 2.88+0.35. The period required to attain reproductive stage was 43.38 + 0.56 days. Cocoons of P.. sansibaricus was elongate and slender. The time required for hatching of cocoon was 16+0.43 days. The hatching rate was 64.06+3.44 percent in laboratory conditions. The juveniles required 38.25 + 0.70 days to become adults. The number of cocoon laid / week was also significantly superior, as compared to E. eugeniae.<br/><br/> Vermicompost along with full inorganic fertilizer increased the yield by 21.4 per cent and 19.0 percent in bittergourd and cowpea, respectively. In cowpea, application of vermicompost without inorganic fertilizer was equally effective as that of the recommended manorial schedule.<br/><br/> There was significant yield increase when vermicompost was used as a potting mixture in bhindi. However, no significant difference in the biometric characters of plants was observed.<br/><br/> Vermicompost along with full inorganic fertilizer increased the yield of bhindi by 15 percent. The effect of in situ vermiculture (250 worms of p. sansibaricus /plot) was on par with that of package of practices recommendations.<br/><br/> Neemcake was found beneficial for supporting growth and multiplication of E.eugeniae. Neem cake recorded 102 percent increase in juvenile worm production. Neem leaves and thevetia leaves were equally effective. Mahua cake was not supportive for growth and multiplication. Neem cake was effective in supporting growth and multiplication of P.sansibaricus. Neem cake recorded 52 percent increase in juvenile worm production. Leaves of neem, clerodendron and glyricidia were equally effective in supporting juvenile worm production as that of the control. Calotropis leaves and mahua cake caused significant reduction in adult, juvenile and cocoon production.<br/><br/> In a pot culture study, among the treatments, carbofuran, phorate and quinalphos, quinalphos(0.5 kg and 1.0kg ai/ha) was found the least toxic to earthworm and there was total survival after an interval of seven days.<br/><br/> The treatments involving earthworms for composting evolved significantly higher Co2 during the period of composting, compared to the control treatment of banana: cowdung mixture without worms. The Co2 evolved by the treatments involving E.eugeniae and P.sansibaricus were on par. Maximum Co2 evolution was observed on the 21st day which was significantly superior to the Co2 evolution estimated at various other intervals. From the 21st day onwards a decline in the CO2 evolution was recorded.<br/><br/> The treatment involving earthworms had a significantly higher bacterial, fungal and actinomycetes counts, as against the treatment without worms. The highest fungal count for E.eugeniae was found on the 28th day. Towards compost maturity the fungal counts were more or less steady; however, a slight increase in the count was observed on the 56th day. There was no definite trend with respect to actinomycetes count during the period of composting.<br/>
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Dale D (Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	<a href="https://krishikosh.egranth.ac.in/handle/1/5810135078">https://krishikosh.egranth.ac.in/handle/1/5810135078</a>
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	<a href="https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810135078&fileid=32e1b39b-f951-4502-b614-19010d7112ab">https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810135078&fileid=32e1b39b-f951-4502-b614-19010d7112ab</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme	Dewey Decimal Classification
Koha item type	Theses

Holdings
Withdrawn status	Lost status	Source of classification or shelving scheme	Damaged status	Not for loan	Home library	Current library	Shelving location	Date acquired	Total Checkouts	Full call number	Barcode	Date last seen	Price effective from	Koha item type
		Dewey Decimal Classification			KAU Central Library, Thrissur	KAU Central Library, Thrissur	Theses	18/03/2014		632.6 JIJ/CO	171233	18/03/2014	18/03/2014	Theses