| PAS_1 |
"Tobacco leaf that was grounded and mixed in distilled water was used to test for its larvicidal effect on house fly (Musca domestica). Only the 3rd instar larvae of house fly were exposed to the aqueous plant extract in the Green house at a temperature of 26.5 and 77.5% relative humidity. All larvae were collected from Goat liver that were exposed to house flies. Five different concentrations of aqueous leaf extracts of tobacco 1 ,2 ,3 ,4 ,5 milligram per litre was tested on the aforementioned house fly larvae and the control [0] was not treated with the aqueous tobacco extract. Mortality observed using 1mg/l at 24hours showed that 42larvae died out of 380 larvae [11.05%], using 2mg/l, 291 larvae died out of 380 larvae [72.6%], using 3mg/l, 372 larvae died out of 380 larvae[97.8%]. Mortality observed for 4 and 5 mg/l hourly showed that at 2hours interval immediately after exposure were significantly different and higher than those of the other concentrations. Tobacco leaf extract effect on the house fly larvae was concentration dependent." [Kasiemobi, Ogbalu & Mauel, Bob & Membere,. (2014). LARVICIDAL EFFECT OF AQUEOUS LEAF EXTRACT OF TOBACCO [NICOTIATABACUM] ON THE THIRD INSTAR LARVAE OF MUSCA DOMESTICA.. IOSR Journal of Agriculture and Veterinary Science. Vol.7. 35-40.] https://www.researchgate.net/publication/271213115_LARVICIDAL_EFFECT_OF_AQUEOUS_LEAF_EXTRACT_OF_TOBACCO_NICOTIANA_TABACUM_ON_THE_THIRD_INSTAR_LARVAE_OF_MUSCA_DOMESTICA |
| PAS_2 |
"Oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), is an important pest of stone and pome fruits. Growers usually depend on chemical insecticides to control this pest, but demand for more environmentally-friendly means of controlling pests is increasing. At least 91 plant extracts have been reported to be effective against other lepidopterans, but their acute toxicity against G. molesta has rarely been studied. Among these 91 materials, we assessed the residual toxicity of 32 extracts against first instar larvae (< 5 h old) of G. molesta in the laboratory. Nicotiana tabacum L., used at the concentration of 2 mg/ml, showed the highest corrected mortality (92.0%) with a lethal time (LT50) value of 12.9 h. The extract was followed in its efficacy by Allium sativum L. (88.0%), Zanthoxylum piperitum (L.) De Candolle (70.0%), and Sapindus mukorossi Gaertner (65.0%), when mortality was assessed at 20 h after exposure. Against adult fruit moths (< 5 d old), N. tabacum also showed the highest corrected mortality among tested extracts, being 85 and 100% in adult females and males, respectively, at 168 h after exposure. However, there was no synergistic effect of the combined application of any of the top four extracts in either laboratory or greenhouse assays. Oviposition by G. molesta on peach twigs was reduced 85–90% when N. tabacum was applied at 4 ml/ twig compared to control (methanol), demonstrating that N. tabacum may have potential for use as a botanical insecticide against G. molesta." [Extract of Nicotiana tabacum as a potential control agent of Grapholita molesta (Lepidoptera: Tortricidae)] https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0198302 |
| Agro Ecological Zone |
Eastern Ghats (Tamil Nadu uplands and south eastern sahayadris) and Deccan plateau, hot semiarid eco-sub region (8.1),Eastern Ghats (Tamil Nadu uplands and south eastern sahayadris) and Deccan plateau, hot semiarid eco-sub region
(8.1),Western zone (TN-3) |
| Other Community Practices |
Aloe vera (kathalai) leaves of Bougainvilla and papaya were boiled and added with turmeric powder and sprayed at a concentration of 10% to control fungal diseases and insect pests. |
| Practice ID |
KNW0020000000609 |
| Reference |
HBN database |
| Annotation ID |
GIAN/GAVL/962 |
| State |
Tamil Nadu |
| PIN Code |
624208 |
Honey Bee Network Knowledge & Innovation Database (HBNKIND)