Poultry manure is relatively resistant to microbial
degradation. However, it is essential for establishing and
maintaining optimum soil physical condition and
important for plant growth (Rahman, 2004). Poultry
manure is excellent organic manure, as it contains high
nitrogen, phosphorus, potassium and other essential
nutrients. In contrast to mineral fertilizer, it adds organic
matter to soil which improves soil structure, nutrient
retention, aeration, soil moisture holding capacity, and
water infiltration (Deksissa et al., 2008). Ammonium-N
(NH4-N) is a significant part of total N in poultry manure,
which additionally contains uric acid. Uric acid
metabolizes rapidly to NH4-N in most soils, and the net
result of the high NH4-N and uric acid contents in poultry
waste is that a large percentage of N can be converted to
nitrate-N (NO3-N) within a few weeks, (Sims and Wolf,
1994). Poultry manure improves the number of pods per
plant, pod yield and haulm yield in groundnut