Comparitive study of biogas slurry with farmyard manure as fertilizer on maize crop.

A field experiment was conducted at JK farms Jhumra Road Faisalabad, to evaluate the potential of Bio-slurry as a fertilizer in contrast with farmyard manure and also with recommended chemical fertilizer to improve the yield, growth and nutritive value of maize crop. Six different treatments were applied to check the efficiency under field conditions. Two Different levels of Biogas Slurry were used to evaluate its efficiency in relation with its quantity. Biogas slurry was taken from biogas plant of JK farms from a floating drum of 35 m 3 . The experiment was conducted by using complete block design with six treatments and three replications. The crop was harvested manually at its physiological maturity at the ground level using a sickle and tied into separate bundles. Data regarding plant height, fresh biomass, cob yield, grain yield and 1000-grain weight were recorded. Plants samples were analyzed for NPK concentrations in straw and grain. The results showed that T2, (Recommended Chemical fertilize) showed maximum yield. This treatment increases plant height, cob yield, grain yield, and 1000-grain weight, compared with control. The concentration of Nitrogen, Phosphorous and Potassium and their uptake were also increased over control. The treatment T3 (Biogas Slurry was applied @ 20t/ha) showed next better results as compared with rest of treatments. It increased the plant height, cob yield, grain yield, 1000-grain weight and NPK level significantly as compared with control and plants treated with farmyard manure.