To control the pest infestation Gadhvi extracts the juice of 200 gm to 400 gm of the leaves of malabar nut and 400 gm to 500 gm of shrubby morning glory. He then mixes this juice with 15 L of water to make a solution. Gadhvi has been successfully using the technique for more than eight years.
Formulation: Liquid juice of 200 gm to 400 gm of the leaves of malabar nut and 400 gm to 500 gm of shrubby morning glory.
Ingredients: The leaves of ardushi ormalabar nut (Adhatoda vasica) naffatia or shrubby morning glory (Ipomoea fistulosa) and water.
"The alcoholic extracts (5 %) that extracted by acetone and methanol showed 100 and 81.6% mortality of adult B. brassicae, respectively and 100 and 90% mortality of nymphs B. brassicae, respectively. Phytochemical screening revealed that the presence of flavones, volatiles oils, tannins, saponines, glycosides, alkaloids, resins and terpenoids in methanol (80%) crude extract. It can be concluded that the acetone and methanol crude leaf extract of A. vasicanees can produce high mortality percentage in (nymphs and adults) of B. brassicae, so it can be used as insecticides. [Haifa NM, Ali SM. (2016).Insecticidal effect of crude plant extract of Adhatodavasica against Brevicorynebrassicae World J ExpBiosci. Vol. 4, No. 1: 49-52]
"Ethanol extracts from 84 samples of 49 Indian plant species in 30 families were tested for insecticidal activities against the brown planthopper (Nilaparvatalugens), using a topical application method. The activity varied with both plant species and tissue sampled. At a dose of 0.5 µg/female, the following 11 extracts indicated significant insecticidal
activity: Adhatodavasica leaves (100% mortality), (Annonas quamosa) seeds (100%), Neriumindicum stems (100%), Clerodendruminerme whole plants (90%), Pongamiapinnata seeds (95%), Prosopischinensis stems (90%), Vitexnegundo leaves (90%), (Azadirachta indica) seeds (89%) and stems (85%), Aeglemarmelos leaves (88%), and Madhucalongifolia seed oil (88%). At 0.25 µg/female, the extract of A. squamosa seeds gave 100% mortality [Hiremath, I. G.; Ahn, Y. J.; Kim, S. I., Insecticidal activity of Indian plant extracts against Nilaparvatalugens (
Homoptera: Delphacidae. ]
"The present study has demonstrated that the crude extracts and pure compound of I. carnea stem showed potent larvicidal activity against (C. quinquefasciatus) and (A. aegypti). The isolated compound as well as extracts were highly effective at lower concentration against the mosquitoes. The plant could be utilized for developing cost effective and environment friendly new type of larvicide for mosquito control. The beneficial effect to the control of vector borne diseases could be employed as a good alternative for synthetic pesticides. [ElijaKhatiwora et al Larvicidal activity of Ipomoea carnea stem extracts and its active ingredientdibutyl phthalate against (Aedes aegypti) and (Culex quinquefasciatus) Der PharmaChemica, 2014, 6 (1):155-161."
Botanical extracts of Ipomoea carnea were very efficient against fourth instar larvae of Spodopteralittoralis. Based on LC50 and LC90 values, Ipomoea carnea acetone extracts were recorded 24.622 and 164.947 ppm, respectively. While hexane extracts were 232.677 and 15,377.590 ppm, respectively. Also, the treatment of fourth instar larva of S. littoralis with chlorpyrifos insecticide caused 9.497 and 91.126 ppm, respectively. The chemical constituents of acetone extract of I. carnea by using GC–MS analysis resulted in the most active compounds that were palmatic (iso propyl-hexadecanoate), silane, [[(3.alpha.,5.alpha.,20R)-pregnane-3,20-diyl]bis(oxy)] bis (trimethyl-(cas)5. and pederone that recorded (44.025%, 11.455% and 9.325%, respectively). Ipomoea carnea extracts were produced with different deformation abnormalities of all S. littoralis stages. [Nassar, Mamdouh&Taha, Mohamed & Mead, Hala&Salama, Mohamed. (2018). Evaluation of Ipomoea carnea (jacq.) extracts and chlorpyrifos insecticide against the cotton leafworms, Spodopteralittoralis (Boisd.). New Trends and Issues Proceedings on Humanities and Social Sciences. 5. 01-11. 10.18844/prosoc.v5i4.3699. ]