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Biocontrol of Pests of Vegetable Cowpea (Vigna unguiculata sub sp. sesquipedalis (L.) Verdcourt) (Record no. 26159)

MARC details
000 -LEADER
fixed length control field	04291nam a2200181Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field	OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20220824171242.0
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	BIN/BI
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name	Bindu S S
245 ## - TITLE STATEMENT
Title	Biocontrol of Pests of Vegetable Cowpea (Vigna unguiculata sub sp. sesquipedalis (L.) Verdcourt)
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	MSc
520 3# - SUMMARY, ETC.
Summary, etc.	Monitoring of the incidence of pests and their <br/>natural enemies was carried out in the heavily insecticide <br/>sprayed vegetable cowpea plots in farmers' fields in two <br/>locations viz. Kalliyoor and Palappur in Thiruvananthapuram <br/>District and in the unsprayed crop raised in the Instructional <br/>Farm, College of Agriculture, Vellayani, during kharif and <br/>rabi, 1996. <br/>The results of the monitoring revealed that the pea <br/>aphid, A. craccivora , the pod bugs R. pedestris and C. gibbosa <br/>and the pod borers H. armigera, L. boeticus and M. testulalis <br/>were the major pests that attacked vegetable cowpea both in the <br/>insecticide sprayed as well as in the unsprayed plots. The pea <br/>aphid was persistent in the insecticide sprayed fields where as <br/>in the unsprayed fields, they were not seen upto 35 days after <br/>sowing, in both kharif and rabi season. The pod bugs and pod <br/>borers were seen throughout the cropping period with increase <br/>in the post flowering period in both sprayed and unsprayed <br/>crop. Attack of the american serpentine leaf miner L. trifolii <br/>was observed only in the insecticide sprayed fields and was <br/>present in rabi as well as in the kharif seasons <br/> <br/><br/> <br/>The <br/> <br/><br/>parasitoids that <br/> <br/><br/>were <br/> <br/><br/>encountered <br/> <br/><br/>were <br/> <br/><br/> <br/>A. nigrotibiali$, Charops sp., Salius sp. and T. subvirescens <br/> <br/>and the predators were M. sexmaculatus, M. crocea, Scyanus sp., <br/>E. stali, S. geminate and X. scutellarae. The population of <br/>the natural enemies was higher during the rabi season than <br/>that during kharif season. <br/>The population of the pests and natural enemies in <br/>the insecticide sprayed and unsprayed plots were compared using <br/>students ‘t' test and the results revealed that the pest were <br/>more in the un sprayed plots but the population was higher only <br/>for a shorter period and it was effectively checked by the <br/>natural enemies, the population of which synchronized with that <br/>of the pests. There was significantly higher population of <br/>natural enemies in the unsprayed plots when compared <br/>to unsprayed plots. <br/>The role of the green lacewing C. carnea in the <br/>management of the vegetable cowpea pests was studied through <br/>replicated field trials conducted at College of Agriculture, <br/>Vellayani during 1996. The impact of biorationals viz., neem <br/>oil and tobacco decoction and insecticide, malathion on the <br/>predator C. carnea and in their effectiveness in management of <br/>cowpea pests was also studied in the field experiment. <br/>C. carnea released @ 50 per plot at fortnightly <br/>intervals effectively checked the aphid population. Among the <br/>botanicals, tobacco decoction 2 per cent was found to be <br/>effective in controlling the aphids, pod bugs and pod borers. <br/> <br/>Neem oil emulsion 10 per cent when applied at fortnightly <br/>intervals was also found to be significantly superior to the <br/>untreated control. However the infestation by aphids and the <br/>pod bugs was' less in all the treatments when compared to <br/>control. Though the control plot did not show significant <br/>reduction in yield, the quality of the produce was reduced due <br/>to the pest infestation. C. carnea @ 100 per plot at <br/>fortnightly and monthly intervals were effective against pod <br/>bugs. The pod borers were effectively checked by C. carnea • <br/>50 arid 100 per plot. In general the monthly release of C. <br/>carnea was comparatively less effective in controlling the <br/>pests. The botanicals did not show any deleterious effect on <br/>C. carnea. <br/>When the yield was assessed in terms of weight and <br/>number of pods harvested, significantly higher yield was <br/>recorded only in plots treated with tobacco decoction 2 per <br/>cent when compared to untreated control. <br/><br/>
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Sudharma K (Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	<a href="https://krishikosh.egranth.ac.in/handle/1/5810153242">https://krishikosh.egranth.ac.in/handle/1/5810153242</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 BIN/BI	171207	18/03/2014	18/03/2014	Theses