UGA Irrigation Studies

Maize Irrigation Study, 1984, Georgia Coastal Plain

Yield Comparisons:

Study:

Crop: Corn (Maize) - 'Dekalb x171'

Year: 1984

Location: USA, GA, Tift County, Gin House Field, Block B2

Soil Type, USDA Series: Tifton loamy sand

Meteorological Observations:
Research Objective: Determine suitability of BAS 106 as a growth regulator to reduce corn water consumption.
Treatments:
1.Control - Growth regulator - bas=0.000
2.Growth regulator - bas=0.003
3.Growth regulator - bas=0.006
4.Growth regulator - bas=0.012

Basic Crop Management: PLANTED - 22 Mar 1984 (placed 5-7.5 cm deep); HARVEST - 08 Aug 1984 (3-row gleaner combine); 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:

Treatment 1:

Control - Growth regulator - bas=0.000

Irrigation Dates and Amounts: Text Format;
Phenology: Emergence - 30 Mar 1984; Pollination (R2) - ; Maturity (Black layer) - 02 Jul 1984
Stand Count:
Soil Water Pressure Observations: Tensiometer & Gypsum Block
Yield Corn Grain, 15.5% moisture, T/ha: Average - 9.87; Individual plots - 10.72, 10.09, 9.66, 8.99 Text File

Treatment 2:

Growth regulator - bas=0.003

Irrigation Dates and Amounts: Text Format;
Phenology: Emergence - 30 Mar 1984; Pollination (R2) - ; Maturity (Black layer) - 02 Jul 1984
Stand Count:
Soil Water Pressure Observations: Tensiometer & Gypsum Block
Yield Corn Grain, 15.5% moisture, T/ha: Average - 8.36; Individual plots - 8.73, 7.48, 8.09, 9.15 Text File

Treatment 3:

Growth regulator - bas=0.006

Irrigation Dates and Amounts: Text Format;
Phenology: Emergence - 30 Mar 1984; Pollination (R2) - ; Maturity (Black layer) - 02 Jul 1984
Stand Count:
Soil Water Pressure Observations: Tensiometer & Gypsum Block
Yield Corn Grain, 15.5% moisture, T/ha: Average - 8.47; Individual plots - 9.93, 7.59, 7.42, 8.92 Text File

Treatment 4:

Growth regulator - bas=0.012

Irrigation Dates and Amounts: Text Format;
Phenology: Emergence - 30 Mar 1984; Pollination (R2) - ; Maturity (Black layer) - 02 Jul 1984
Stand Count:
Soil Water Pressure Observations: Tensiometer & Gypsum Block
Yield Corn Grain, 15.5% moisture, T/ha: Average - 8.06; Individual plots - 8.71, 7.42, 7.45, 8.65 Text File

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.