Effect of certain indigenous technical knowledge on the management of red spider mite (Oligonychus coffeae) in tea

Autor:	Kapil Kumar Bhuyan Gautam Kumar Saikia, Mukul Kumar Deka Subhash Chandra Barua
Rok vydání:	2017
Předmět:	Toxicology integumentary system biology Spider mite parasitic diseases Botany Oligonychus coffeae Soil Science biology.organism_classification Agronomy and Crop Science Indigenous
Zdroj:	Journal of Plantation Crops. 45:135
ISSN:	2454-8480 0304-5242
DOI:	10.19071/jpc.2017.v45.i2.3308
Popis:	An investigation was carried out at Deha Tea Estate, Jorhat, Assam during 2015-16 by using different indigenous technicalknowledge (ITK) prevalent among different small tea growers. Fish extract at (0.25, 0.5 and 1%), Polygonum hydropiper at (2.5,5 and 7.5%) and Azadirachtin (Neemazal-F 5%) were evaluated in field conditions against tea mite. The result showed that fishextract in combination with cow dung, cow urine and water when sprayed at one per cent concentration, significantly reduced redspider mite population (96.5%), percentage of leaves infestation (5.2%) and leaf area infested by the mite (11.6%). P. hydropiperin combination with cow urine and water when sprayed at 7.5 per cent concentration significantly reduced red spider mitepopulation (87.5%), percentage of infestation (9.1%) and leaf area infested by the mite (12.9%). Among all the ITKs, fish extractat one per cent caused higher reduction of infestation of red spider mite followed by P. hydropiper extract at 7.5 per cent.Influence of both the treatments on the management of red spider mite was at par with that of commercial Azadirachtin.
Databáze:	OpenAIRE
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