410 Soil Sensing for Crop Water Management: I

Oral Session
SSSA Division: Soil Physics
Evaluating and managing water use for crop production using soil sensing has the potential to improve crop water productivity under a wide range of environmental/edaphic conditions. However, current limitations in sensing technologies hamper adoption on a production scale. Sensor deployment is typically of limited spatial extent and may not be representative of field scale crop water use and spatial variability. Supplemental use of other ad hoc measurements may be required. Developments in wireless sensor technology are also required to provide real-time information for water managers. Lastly, sensor response may be influenced by soil salinity and other factors that may compromise the correct interpretation of water use. We seek contributions related to soil sensing technology and applications that can be used to improve crop productivity related to water and other limiting soil factors such as salinity. We envision two tracks for the symposium. One is related to sensing of soil properties that affect crop productivity (including but not limited to salinity, fertility, soil water availability), and particularly the spatial variation of these properties and the affected crop productivity. The other track is related to crop water productivity, which involves using soil water sensing in solutions of the soil water balance to estimate crop water use, which in turns allows calculation of the water use efficiency or crop water productivity.

Climatology & Modeling
Sensor-Based Nutrient Management Community, Agroclimatology and Agronomic Modeling Community

Wednesday, November 6, 2013: 7:55 AM-2:00 PM
Tampa Convention Center, Room 21

Robert C. Schwartz , Steven R. Evett , Susan A. O'Shaughnessy and Timothy R. Green
Susan A. O'Shaughnessy and Jourdan M. Bell
7:55 AM
Introductory Remarks
8:00 AM
Mobile Proximal Soil Sensing for Crop Productivity Assessment and Water Management.
Kenneth A Sudduth, USDA-ARS Cropping Systems & Water Quality Research Unit; Earl D. Vories, USDA-ARS Cropping Systems & Water Quality Research Unit; Allen L Thompson, University of Missouri; Newell R Kitchen, USDA-ARS
9:20 AM
Mapping of Crop Water Availability By Thermal and Optical Remote Sensing.
Victor Alchanatis, Agricultural Research Organisation, ARO
9:40 AM
9:50 AM
Real-Time Model-Data Synthesis for Soil Moisture.
Andres Patrignani, Kansas State University; Tyson E. Ochsner, Oklahoma State University
10:05 AM
From Soil to the Cloud: Permanent Wireless Underground Sensors for Autonomous Irrigation.
Mehmet C Vuran, University of Nebraska-Lincoln; Xin Dong, University of Nebraska-Lincoln; Suat Irmak, University of Nebraska - Lincoln
10:25 AM
Irrigation Thresholds for Onion, Celery and Spinach in Histosols.
Jean Caron, Laval University; Djamila Rekika, Université Laval; Guillaume Théroux Rancourt, Université Laval; Jonathan lafond, Université Laval
10:40 AM
A Soil Moisture Sensor-Based Variable Rate Irrigation Scheduling System.
George Vellidis, University of Georgia-Tifton; Michael A Tucker, UGA; Calvin Perry, University of Georgia; Herman E Henry, University of Georgia; Rodney W Hill, University of Georgia
11:00 AM
Lunch Break
1:00 PM
Spatial Range of Representativity Complements Physical Sphere of Influence of Soil Water Content Sensor in Spatially Variable Field Soils.
Ole Wendroth, University of Kentucky; Yang Yang, University of Kentucky; Riley Jason Walton, University of Kentucky
1:15 PM
In-Situ Drainage Lysimeters for Field Crops Irrigated With Brackish Water.
Iael Raij, The Wyler Dept of Dryland Agriculture, Ben Gurion University of the Negev; Alon Ben-Gal, Agricultural Research Organization of Israel; Naftali Lazarovitch, Ben-Gurion University of the Negev
1:30 PM
1:45 PM
Dynamics of Soil Water and Nitrate in the Root-Zone Under Cover Crop and Winter Fallow Using a Combination of Soil Monitoring and Modelling.
Ahmad B. Moradi, University of California-Davis; Maziar Kandelous, University of California Davis; Matthew R. Dumlao, University of California-Davis; Martin Burger, University of California-Davis; Wendy K. Silk, University of California-Davis; Jan W. Hopmans, University of California-Davis
2:00 PM