Surmaji Ditajee Damor of Sabarkantha district in Gujarat makes a pesticide from the leaves of Oleander (Nerium indicum). He sprays this solution on the maize and cotton crop to control pests. Damor crushes 2 kg of oleander leaves and mixes with 5 L of water. T
Crop Family: Malvaceae
Crop Scientific Name: (Gossypium spp.)
Crop Vernacular Name: Ruyi
Formulation: Liquid solution of leaves of Oleander (Nerium indicum).
Ingredients: Oleander (Nerium indicum) leaves and water
"Crude ethanolic extract of Nerium oleander leaves was evaluated for its insecticidal and antibacterial activities. Stored grain pest, Trogodermagranarium and fruit fly Drosophila rufa larvae were used as insect model. The leave extract was prepared in ethanol. The recovered dried extract was 9.4g/100gram of fresh leaves. Dried extract was suspended in ethanol for exposing T. granarium and D. rufa. To check the contact effect of the crude extract, 2nd and 4th instar larvae of T. granarium and 3rd instar larvae of D. rufa were used. Three methods viz.., filter paper, residual film and feeding were used. Concentration of N. oleander extract used were 10, 25, 50 and 100mg. T. granarium larvae showed 10% mortality after 72 hours at 100mg dose level. In D. rufa 10% mortality occurred after 48 hours and 15% after 72 hours at 20mg dose level. Antimicrobial activity of N. oleander crude extract was evaluated by disc diffusion method against both Gram-positive and –negative bacterial strains. Nine doses of crude extract i.e., 0.4, 0.5, 0.7, 0.8, 0.9, 1.00, 1.2 and 1.4 mg/disc for each strain. Four strains i.e., Bacillus cereus, cellulose producing Bacillus, B. alves and Acinetobacteranitratus showed growth inhibition zones at all above concentrations. [Ali, Syed & Ali, Samina&Munir, Shahid&Riaz, Tanzeela. (2008). Insecticidal bactericidal effects ethanolic leaf extract of common oleander, Nerium Oleander. Punjab University Journal of Zoology. 23. 81-90. "
"Unal and Akkuzu demostrated that Azadirachtaindica A. Juss extracts showed high larvicidal activity against T. wilkinsoni. Up to now, there were no reports on the larvicidal effect of N. oleander leaf extracts against T. wilkinsoni. Additionally, there are some reports show that the extracts of N. oleander can be used as a control agent against some pest and vector species such as mosquitoes. PPM is one of the most harmful pest in the Mediterranean Basin and it causes serious morphological and physiological losses in Pinus forests. After heavily damage by PPM, resistance ability of the damaged tree to drought, pathogens and herbivores may be reduced. Until now, although different methods were used to control this pest, the problem is still unsolved in many parts of the Mediterranean Basin where the pest occurs. In this point, N. oleander extracts have significant larvicidal activity against PPM larvae and it might be used for potential larvicides. [GürkanSemiz, Larvicidal activity of Nerium oleander L. leaf extract against Pine Processionary Moth (Thaumetopoeawilkinsoni Tams.) , Journal of Entomology and Zoology Studies 2017; 5(6): 79-81]"