Take equal amount of 1 kg of custard apple (annona squamosa) leaves, turmeric rhizome, peenari change (Clerodendrum inermi), chothukatralai (Aloe vera), nochi (Vitex negundo) and neem (Azadirachta indica) kernel. Grind all the ingredients into a paste by adding sufficient water. By this process,about 5 l of the juice is extracted and dilute with 15 l of water. Administer the herbal extract into the crown region of the tree at the rate of 2 l per palm after the harvest of nuts.
Crop Family: Arecaceae
Crop Scientific Name: (Cocos nucifera)
Crop Vernacular Name: Nariyal
Formulation: Liquid solution of custard apple (annona squamosa) leaves, turmeric rhizome, peenari change (Clerodendrum inermi), chothukatralai (Aloe vera), nochi (Vitex negundo) and neem (Azadirachta indica) kernel.
Ingredients: The leaves of custard apple (Annona squamosa) , Turmeric rhizome, (Curcuma longa ), Peenari change (Clerodendrum inermi) , Chothukatralai(Aloe vera) , Nochi (Vitex negundo), Neem (Azadirachta indica) , Kernel and water
"Alkaloids isolated from Annonasquamosa have shown larvicidal growth-regulating and chemosterilant activities against Anopheles stephensi at concentrations of 50 to 200 ppm. Adults exposed as larvae to different treatments showed reduced fecundity and fertility in females."
"All plant extracts showed moderate effects after 24 h of exposure; however, the highest toxic effect of bark methanol extract of A. squamosa, leaf ethyl acetate extract of C. indicum and leaf acetone extract of T. procumbens against the larvae of An. subpictus (LC50 = 93.80, 39.98 and 51.57 mg/l) and bark methanol extract of A. squamosa, leaf methanol extract of C. indicum and leaf ethyl acetate extract of T. procumbens against the larvae of Cx. tritaeniorhynchus (LC50 =104.94, 42.29 and 69.16 mg/l) respectively. " [Kamaraj C, Bagavan A, Elango G, et al. Larvicidal activity of medicinal plant extracts against Anopheles subpictus&Culextritaeniorhynchus. Indian J Med Res. 2011;134(1):101-106. ]
"The toxicity of four concentrations (1, 5, 10 and 20% w/v) of an aqueous extract from the weed, ClerodendrumviscosumVentenat (Verbenaceae) was investigated under field conditions of the North Bengal University, Darjeeling, West Bengal, India for managing two major pests of tea, Camellia sinensis (L), namely the tea mosquito bug, Helopeltistheivora Waterhouse, (
Heteroptera: Miridae) and the tea red spider mite, OligonychuscoffeaeNietner, (
Acarina: Tetranychidae). Four field trials, two for red spider mite and two for tea mosquito bug, were conducted during April–May 2008 and October–November 2009 following a Randomized Block design. The aqueous extract of C. viscosum effectively and significantly reduced the mite population as well as infestation of tea mosquito bug by 68–95% and 73–86%, respectively, and their bioefficacy is comparable to synthetic and neem pesticides. No phytotoxic effect (score 0–5% and grade 1) was observed in the tea bushes sprayed with different doses of aqueous extract of C. viscosum in the field. Made tea samples were taint free. Organoleptic test revealed leaf-infusions and liquor strength as good, scoring 6.5–7.0 on a 10 point scale. Availability and distribution of this weed (C. viscosum) in and around tea-growing areas of sub Himalayan region, along with its processing for the feasibility of including C. visosum extracts in the current IPM programme is discussed. " [Roy, Somnath&Mukhopadhyay, Ananda&Gurusubramanian, Guruswami. (2010). Field efficacy of a biopesticide prepared from Clerodendrumviscosum Vent. (Verbenaceae) against two major tea pests in the sub Himalayan tea plantation of North Bengal, India. Journal of Pest Science. 83. 371-377. 10.1007/s10340-010-0306-5.]