Soil test phosphorus dynamics in animal waste amended soils: Using P mass balance approach

• Published in: Chemosphere (Oxford) Vol. 90; no. 2; pp. 691 - 698
• Main Authors: Shafqat, Mustafa N., Pierzynski, Gary M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.01.2013; Elsevier
• Subjects: Agriculture - methods; Agronomy. Soil science and plant productions; Animal waste phosphorus; animal wastes; Biological and medical sciences; clay fraction; corn; Crop phosphorus uptake; Environmental Monitoring; Environmental Restoration and Remediation; fertilizers; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; guidelines; Kinetics; Manure; Meleagris; Models, Chemical; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; phosphorus; Phosphorus - analysis; Phosphorus - metabolism; Refuse Disposal - methods; risk assessment; ruminants; Soil - chemistry; soil amendments; Soil and P source properties; soil organic matter; soil pH; Soil Pollutants - analysis; Soil Pollutants - metabolism; Soil test phosphorus; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Sus scrofa; turkeys; Zea mays; Zea mays - physiology; Soil and P source properties; Crop phosphorus uptake; Animal waste phosphorus; Soil test phosphorus; Phosphorus; Agricultural soil; Mass balance; Amendment; Soil testing; Cultivated plant; Soil plant relation; Animal waste; Material balance
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2012.09.050

► Both soils and P sources influenced the rates of change in STP at time zero (T0). ► Animal manures from ruminants resulted in larger slope in most soils at T0. ► The Turkey litter had lowest rate of change in STP in most soils at T0. ► The slope decreased from higher to lower rate of P application in mass balance study. Soil test phosphorus (STP) is commonly used for phosphorus (P) fertilizer recommendations in agriculture and in risk assessment of offsite P movement from environmental perspectives. Present guidelines do not differentiate between the P sources and assume that P added to the soil would behave alike. The objective of this study was to understand the influence of different animal P sources applied at three different rates on changes in STP in many different soils using P mass balance approach. Six P sources consisting of three types of monogastric, two ruminant and triple super phosphate (TSP) applied at 0, 50, and 150mgPkg−1 in six different soils. Corn (Zea mays L.) was used to remove P and total of seven harvests were achieved. The STP (Bray 1P) was monitored at T0 and after each harvest and relationship was developed between STP and net P addition/removal to compute the slope. Prior to crop P removal, the Turkey (Meleagris gallopava) litter (TL) produced the smallest slope at both rates and across all soils. Most P sources resulted large slope values in the Woodson soil. The slope value progressively decreased from higher rate to lower rate to the control treatment in P mass balance study. Soil clay content, initial STP, soil pH, and soil organic matter levels were involved in explaining variations in slope value in TL, while initial STP and clay content in Hog (Sus scrofa) manure (HM) and biosolid (SS) amended soils in net P addition/removal study.