Take 100 g of green sea algae (Ceratophyllum demersum) in 500 ml of water, keep it for overnight and boil it for 45 minutes in the next morning and after colling down the solution is filtered with the clean cloth and afterthat 500 ml of water is added to remnants of algae and then boil it for 45 minutes and again filter it. The filtratered solution is added to 40 l of water and then sprinkles on plant crops. The remnants of algae in powder form are also used as fertilizer. This technique was developed by a farmer, own self us learnt form LabhsankarMaheta, M.Sc, Valsad.
Formulation: 100 gm of green sea algae (Ceratophyllum demersum) to produce powder form of biofertilizer after processing
Ingredients: Algae (Ceratophyllum demersum)
"Insecticidal activities of methanol and water extracts, obtained from in vitro propagation of Ceratophyllumdemersum L. on maize weevil, SitophiluszeamaisMotschulsky (
Coleoptera: Curculionidae) were laboratory studied. In vitro whole plant regeneration was obtained from nodal explants of C. demersum cultured on liquid Murashige and Skoog medium (MS) treated with various combinations of 6-Benzylaminopurine (BAP) and 1-Naphthaleneacetic acid (NAA). Different concentrations (2.5, 5, 10 and 20 mg/ml) of C. demersum extracts were tested. The highest mortality (100%) caused were determined by both extracts at the concentrations of 10 and 20 mg/ml after 96 h of exposure. LC50 of methanol and water extracts after 96 h were 1.720 and 1.015 mg/ml, respectively. It was detected that mortality was correlated with concentration and exposure time. These findings suggest that C. demersum extract could be considered as an effective biocontrol agent and could be used as an alternative to chemical insecticides." [Dogan, Muhammet&Emsen, Bugrahan&Aasim, Muhammad &Yildirim, Erol. (2017). Ceratophyllumdemersum L. Extract as a Botanical Insecticide for Controlling the Maize Weevil, SitophiluszeamaisMotschulsky (
Coleoptera: Curculionidae). Egyptian journal of pest control. 27. 11-15.]
:Insecticidal activities of methanol and water extracts obtained from in vitro propagated of Ceratophyllumdemersum L., were tested on adults of the granary weevil SitophilusgranariusL.. In vitro shoot regeneration was achieved from shoot tip explants of C. demersum cultured on liquid Murashige and Skoog (MS) media containing various combinations of 6-Benzylaminopurine (BAP) and 1-Naphthaleneacetic acid (NAA). Mortality percentages of the insects exposed to different concentrations (2.5, 5, 10 and 20 mg/ml) of the extracts at different intervals of 24, 48 and 96 h were determined. Methanol (99%) and water extracts gave (100%) mortality after 96 h. The lowest median lethal concentration (LC50) values of methanol and water extracts after 96 h
were: 2.505 and 1.153 mg/ml, respectively. Furthermore, positive correlations at p < 0.01 level between mortality and concentration; mortality and exposure time for both extracts was detected. Based on the present results, it can be concluded that this aquatic plant extracts of C. demersum may have a potential action for control of S. granarius adults and can be suggested against storage pests. [Emsen, Bugrahan&Dogan, Muhammet&Aasim, Muhammad &Yildirim, Erol. (2016). Insecticidal Activity of In Vitro Propagated Aquatic Plant Ceratophyllumdemersum L. against Granary Weevil Sitophilusgranarius L. (
Coleoptera: Curculionidae). Egyptian journal of pest control. 26. 619-624.]
"By this, the two aquatic plants, especially Ceratophylumdemersum have been identified under natural conditions to be good sequesters of pesticides and agents of improving quality of lake water and therefore reducing the health hazard that may be associated with its potable use by the riparian communities. The phytoremediative ability of aquatic plants must therefore be appreciated and considered as an option in decontamination processes in aquatic media." [S. S. Koranteng,Pesticides Bioconcentration Potential of Aquatic Plants in the Volta Lake, West African Journal of Applied Ecology, vol. 26(SI), 2018 ]
"Insecticidal prospects of algal and cyanobacterial extracts against the cotton leafwormSpodopteralittoralis"