Phosphorus Dynamics in Two Poultry-Litter Amended Soils of Mississippi Under Three Management Systems

B. W. BEAVERS; Z. LIU; M. S. COX; W. L. KINGERY; G. E. BRINK; P. D. GERARD; K. C. MCGREGOR

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Phosphorus Dynamics in Two Poultry-Litter Amended Soils of Mississippi Under Three Management Systems

机译：三种管理系统下密西西比州两种家禽凋落改良土壤的磷动力学

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An experiment arranged in a randomized complete block design with three replications was conducted on a Lexington soil (fine-silty,mixed,active,thermic,Ultic Hapludalfs) and a Loring soil (fine-silty,mixed,active,thermic,Oxyaquic Fragiudalfs) in Mississippi from September 1997 to September 2000 on 18 runoff plots under natural rainfall condition to study the phosphorus (P) dynamics in poultry litter amended soils under three management systems combining tillage and planting date treatments to identify effective management practices in southern U.S.A.The management systems in the study were:1) tillage in the fall prior to litter application followed by a delayed planting of fall forages (CT-DP);2) tillage followed by immediate planting of the fall forage with subsequent litter application (CT-IP);and 3) no-till with planting prior to litter application (NT-IP).The results indicated that there was significant increase in soil P after 3 years of poultry litter application for both Lexington and Loring soils (P 90%),was accumulated in both soils.In Loring soil,soluble P mass in the runoff was significantly higher from NT-IP than from CT-DP and CT-IP over the entire study period (P < 0.01).For both soils,there were no significant differences in sediment P mass between management systems.For Loring soil,CT-DP and CT-IP were effective management practices to mitigate negative effects due to poultry litter application.

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《土壤圈（英文版）》 |2010年第2期|217-228|共12页
作者
B. W. BEAVERS; Z. LIU; M. S. COX; W. L. KINGERY; G. E. BRINK; P. D. GERARD; K. C. MCGREGOR;
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Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, Mississippi 39762 USA;

Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, Mississippi 39762 USA;

Dynamic Solutions, LLC, Knoxville, Tennessee 37919 USA;

Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, Mississippi 39762 USA;

Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, Mississippi 39762 USA;

Dairy Forage Research Center of Agricultural Research Service at the U.S. Department of Agriculture, Madison, Wisconsin 53706 USA;

Experimental Statistics Unit, Mississippi State University, Mississippi State, Mississippi 39762 USA;

National Sedimentation Laboratory of Agricultural Research Service at the U.S. Department of Agriculture, Oxford, Mississippi 38655 USA;

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Phosphorus Dynamics in Two Poultry-Litter Amended Soils of Mississippi Under Three Management Systems

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