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Ecofriendly management of rhizoctonia leaf blight of amaranthus (Record no. 27146)

MARC details
000 -LEADER
fixed length control field	03431nam a2200181Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field	OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20220304144829.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	140128s9999 xx 000 0 und d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number	632.3
Item number	PRI/EC
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name	Priyadarsini P
245 ## - TITLE STATEMENT
Title	Ecofriendly management of rhizoctonia leaf blight of amaranthus
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc.	Vellayani
Name of publisher, distributor, etc.	Department of Plant Pathology, College of Agriculture
Date of publication, distribution, etc.	2003
502 ## - DISSERTATION NOTE
Degree type	MSc
520 3# - SUMMARY, ETC.
Summary, etc.	The present investigation was undertaken at College of Agriculture, <br/>Vellayani during the year 2002-2003 to evolve an ecofriendly practice for the <br/>management of foliar blight of amaranthus caused by Rhizoctonia so/ani. <br/>Biocontrol agents like Trichoderma harzianum, Pseudomonas jluorescens, <br/>a newly discovered root endophyte, Piriformospora indica and indigenous <br/>materials like turmeric powder-baking soda and rice husk ash were used in <br/>the study. <br/>From among the ten isolates of R. so/ani, the isolate R3 (Vellayani) <br/>which produced maximum disease symptoms W?3 selected for the study. <br/>Among the four fungal antagonists tested against R. so/ani, T. harzianum <br/>emerged as the most potential one. The fungus, P. indica when subjected <br/>to dual culture with R. so/ani did not cause any inhibition on its growth. <br/>Among the four isolates of P. jluorescens tested against R. so/ani, the <br/>isolate B3 showed maximum inhibition followed by the isolate KK16. The <br/>culture filtrate of the isolate of P. jluorescens viz., B3 alone exerted <br/>inhibitory effect on the growth of R. so/ani. The different combinations of <br/>turmeric powder-baking soda and rice husk ash did not inhibit the growth <br/>of R. so/ani . <br/>. ' <br/>Pot culture experiments were conducted to assess the efficacy of <br/>biocontrol agents and indigenous materials in managing the disease and <br/>enhancing the growth of amaranthus. Among the three concentrations of <br/>rice husk ash used, the highest concentration of 1000 g produced <br/>maximum disease suppression and enhancement of growth. Rice husk ash <br/>exerted significant effects on all the growth parameters. The fungal <br/>antagonist T. harzianum and bacterial isolates B3 and KK16 were found to <br/>be highly effective in reducing the disease and enhancing growth. 10 : I <br/>combination of turmeric powder-baking soda was found to enhance the <br/> <br/>growth significantly and there was a reduction in the disease incidence <br/>also. The highest concentration of P. indica (2.00 per cent) recorded the <br/>maximum root colonization and exerted significant effects on root length <br/>and root dry weight. <br/>Changes in the level of total phenols, amino acids carbohydrates and <br/>enzymes like PAL, PO and PPO due to the above treatments were <br/>estimated. Soil application followed by foliar spray of fungal and <br/>bacterial antagonists significantly enhanced the activity of the defense <br/>related enzymes. The level of total phenol was found to be higher for <br/>plants treated with T. harzianum. There was no significant increase in <br/>amino acid and carbohydrate content due to these treatments. The results <br/>of this study indicate that the efficient strains of T. harzianum and <br/>P. fluorescens (soil or foliar application) can be used in tandem with rice <br/>husk ash to evolve a suitable ecofriendly disease management strategy to <br/>combat foliar blight of amaranthus. <br/><br/>
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Gokulapalan C (Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	<a href="https://krishikosh.egranth.ac.in/handle/1/5810106112">https://krishikosh.egranth.ac.in/handle/1/5810106112</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		632.3 PRI/EC	172205	18/03/2014	18/03/2014	Theses