391 Nutrient Cycling and Management in High Yield Environments: Oral Presentations

Oral Session
S04 Soil Fertility & Plant Nutrition Continuously increasing crop yield presents challenges concerning nutrient requirements, nutrient recycling, and process in the soil that affect nutrient use efficiency and supply for crops. Information will be presented on improving nutrient management practices for high-yield environments.


Nutrient Management & Soil & Plant Analysis
Wednesday, October 24, 2012: 10:00 AM-12:05 PM
Duke Energy Convention Center, Room 252, Level 2

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Antonio P. Mallarino
Matthew D. Ruark
10:05 AM
Building a Nitrogen Recommendation for Irrigated Sweet Corn.
Matthew D. Ruark, University of Wisconsin-Madison; Ken Schroeder, University of Wisconsin-Extension; Donald Genrich, University of Wisconsin-Extension; Alvin Bussan, University of Wisconsin-Madison; Paul Mitchell, University of Wisconsin-Madison
10:20 AM
Using Active Canopy Sensors to Monitor Corn and Soybean Phosphorus Stress: Interactions with Crop Nitrogen Status.
John Grove, University of Kentucky; Martin Navarro, University of Kentucky
10:35 AM
Long-Term Rice Rotation, Tillage, and Fertility Effects On Extractable Soil Nutrients in a Silt-Loam Soil.
Jill M. Motschenbacher, University of Arkansas; Kristofor Brye, University of Arkansas; Merle M. Anders, University of Arkansas; Edward E. Gbur, Agricultural Statistics Laboratory
10:50 AM
Aboveground Biomass Yield and Carbon and Nitrogen Accumulation in a Continuous Corn Stover Harvesting System.
Jose L. Pantoja, Iowa State University; John E. Sawyer, Iowa State University; Mahdi Al-Kaisi, Iowa State University; Daniel W. Barker, Iowa State University
11:05 AM
11:20 AM
Stalk Decomposition Using Humic Acids (with nitrogen) and Its Effects On Microbial Population and Nutrient Release in Maize.
Gregory Willoughby, Helena Chemical Co.; Michael Powell, Helena Chemical; Gibbs Wilson, Horizon Ag Products
11:35 AM
The Effect of Different Nutrient Sources and Switchgrass (Panicum virgatum L.) Harvesting Frequency On Soil Aggregate Stability and Mineral Nitrogen Distribution in the Profile.
Yesuf Mohammed, Oklahoma State University; William Raun, Oklahoma State University; Hailin Zhang, Oklahoma State University; Gopal Kakani, Oklahoma State University; Randy Taylor, Oklahoma State University; Kefyalew Girma Desta, Washington State University
11:50 AM
Soil Fertility and Agricultural Sustainability Assessment Based On Long-Term Agroecosystem Experiments in China.
Minggang Xu, Institute of Agricultural Resources and Regional Planning; Yilai Lou, Institute of Agricultural Resources and Regional Planning; Wenju Zhang, Institute of Agricultural Resources and Regional Planning
12:05 PM