[Digestion] Pest repellent capability of biogas slurry - information request

Anand Karve adkarve at gmail.com
Wed Dec 24 08:35:59 MST 2014


Dear List,
in continuation with my communication from yesterday I wish to add
that all animals represent live biogas plants and their dung the
slurry . It is a common practice in rural India and also in some parts
of Africa to regularly use cattle dung for plastering the walls and
floors of houses. One would expect such a plaster to attract flies but
actually it does not. This is also most probably due to the fact that
the flies do not find cattle dung appetizing.
Yours A.D.Karve
***
Dr. A.D. Karve

Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)

Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)


On Tue, Dec 23, 2014 at 4:00 AM, Hoysall Chanakya
<chanakya at astra.iisc.ernet.in> wrote:
> Dear Digestion list members
> Merry Christmas and a Happy new year
>
> I will attempt to examine the pest repellent properties of digester liquid
> from an anaerobic digester and I request list members if they could share
> any such experience- documented, published or simply visually
> authenticated on this subject.
>
> I am inspired by the fact that between 1992 and 2006 organic farmers of
> the Low external inputs and sustainable agriculture (LEISA) network in
> South India fermented leaves of local weeds and sprayed the filtered
> digestate (25d old) to obtain pest repellent action for periods between
> 3-7d for many sucking pests (aphids and jassids), red hairy caterpillar
> (groundnut), pink boll worm (cotton) and many less described pests of
> paddy, green gram and a few vegetable crops.
>
> Please share with me any such information if you know of any,.  I am
> attempting to document and experiment the same.  The irony has been that
> for long (over 40 years) we recommended that digestion of cattle dung
> because it removes the property of attraction to flies and only very few
> workers have attempted to determine if it actually repelled insects (and
> pests).
>
> With best wishes
> And thanking you in advance
> Chanakya
> chanakya at astra.iisc.ernet.in
> hoysull at gmail.com
>
>
>
> --
> Center for Sustainable Technologies
> Assoc. Faculty. Center for Contemporary Studies
> Center for Infrastructure, Sustainable Transport and  Urban Planning
> (CiSTUP),
> Indian Institute of Science, Bangalore
>
>
>
>
>
> --
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