Wednesday, 9 November 2005
12

Seasonal Changes in Phosphorus and Phosphatase Compositions in Soils enriched with Broiler Litter.

Regine N. Mankolo, Zachary N. Senwo, and Thilini D. Ranatunga. Alabama A&M University, PO Box 202, Normal, AL 35762

In the United state, the poultry industry generates over 50% of the agricultural profits while utilizing nearly 80% of the grain produced for feeds. An estimated 1 kg of litter is generated for each kg of broiler litter produced of which over 90% is land applied. Laboratory analyses were conducted to quantify phosphorus (P) and phosphatase compositions in soils enriched with broiler litter. Results indicated that the varoius P forms decreased with depth and were significantly (P<0.01) affected by season. Phosphatase activity was affected by the depth in the first year compared to the second year. The lowest phosphatase activity occured in fall.

Handout (.pps format, 235.0 kb)

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