A collaborative study was conducted by Soil Chemistry Section, Institute of Soil
Chemistry and Environmental Sciences, Ayub Agricultural Research Institute Faisalabad
and Pakistan Domestic Biogas Program (PDBP)/Rural Support Programs’ Network
(RSPN) to evaluate the use of bio slurry, a by product of bio gas plant for vegetable
production. Bio-slurry is a thick liquid that comes out of the biogas plant outlet and then
flows into the slurry pits. As the slurry is ejected after a period of anaerobic digestion
within the plant digester (about 50 days), thus, the slurry is sanitized, disinfected and turn
the nutrients in more available form to plants. Therefore relative to farm yard manure
which is normally piled up in the yard and less decomposed, bio-slurry contains readily
available plant nutrients. A farming household who owns a biogas plant will have an
advantage of a continuous supply of high quality manure for his crops. According to
MOU signed by both the organizations, the RSPN provided the financial assistant while
Soil Chemistry Section conducted the research experiments at two locations i.e. at Soil
Chemistry Section and at farmer’s filed to evaluate the use of bio-slurry for vegetable