Sohail A.,Institute PARC |
Hamid F.S.,Institute PARC |
Waheed A.,Institute PARC |
Ahmed N.,Pakistan Agricultural Research Council |
And 3 more authors.
Journal of Materials and Environmental Science | Year: 2012
Experiment was conducted at National Tea Research Institute, Shinkiari, Mansehra-Pakistan during 2010-11 with the objectives to examine the efficacy of some botanical products neem extract, garlic extract and tobacco extract on aphid infestation on growing shoots and their control at nursery stage The mortality of aphid on tea cutting significantly affected under botanical pesticides application after 24 hours. Tobacco extract at 2% caused highest mortality of 98% of aphid, where its population reduces up to 5% per treatment over the population of 386. The observation on infestation of aphid after 72 hours showed that Tobacco extract at 2% showed highest efficacy against the target insect and resulted mortality of 96% whereas its population reduced in 11% treatment. Neem extract at 2% ranked second in relation to efficacy against the target insect with mortality of 68% where as the efficacy of garlic extract at 2% was the minimum with lowest mortality i.e. 66%. It was observed that the entire botanical pesticides showed high efficacy against aphid and spray with tobacco extract effectively control aphid population followed by neem extract and garlic extract remained least effective against aphid.