Soybean Irrigation Study, 1980, Georgia Coastal Plain

Yield Comparisons:
Study:
  • Crop: Soybeans - 'Cobb'
  • Year: 1980
  • Location: USA, GA, Tift County, Gopher Ridge Farm, Blocks G1 & G2
  • Soil Type, USDA Series: Bonifay sand
  • Meteorological Observations: Gopher Ridge, 80

Research Objectives:

    1. Measure root density distribution in irrigated soybeans and non-irrigated soybeans.
    2. Examine the effect of shallow frequent irrigations versus deep trigger irrigations.
Treatments:
G1:
 1.Fixed schedule 3 day
 2.No irrigation
 3.Shallow 1 day delay
 4.Control - Shallow 15-30 cm at 25 mb
 5.Fixed schedule 6 day
G2:
 1.Control - Shallow 15-30 cm at 25 mb
 2.Deep 45-60 cm at 25 mb
 3.Fixed schedule

Basic Crop Management: PLANTED - 28 Jul 1980(G1) & 29 Jul 1980(G2) (rows 0.9 m apart); HARVEST - 11 Nov 1980; TILLAGE - Moldboard Plow (30 cm deep plus smoothing and bed shaping), wheel traffic controlled at 1.2 m centers; FERTILIZATION - Typical Extension Recommended Rate; WEED & PEST CONTROL: Typical Extension Recommendations.
Chronological Treatment and Observation Details

Observations and data sets for individual treatments (crop years) follow:
G1 Treatment 1:
  Fixed schedule 3 day
 G1 Treatment 2:
  No irrigation
 G1 Treatment 3:
  Shallow 1 day delay
 G1 Treatment 4:
 Control - Shallow 15-30 cm at 25 mb
 G1 Treatment 5:
  Fixed schedule 6 day
 G2 Treatment 1:
 Control - Shallow 15-30 cm at 25 mb
 G2 Treatment 2:
  Deep 45-60 cm at 25 mb
 G2 Treatment 3:
  Fixed schedule
For more information on the study and its interpretation contact:
Dr. Jim Hook Professor, Soil and Water Management
Crop and Soil Sciences Department and NESPAL
The University of Georgia, College of Agricultural and Environmental Sciences
P.O. Box 748, Tifton, GA 31793-0748
e-mail: jimhook@tifton.cpes.peachnet.edu

Page developed by James E. Hook, Amanda Richards, and Linsey Forlow.
Last Modified on 29 June 2000.