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Automatic Section Control (ASC) Technology
Michael Buschermohle
Precision Agriculture Specialist
UT Extension
Sprayer Automatic Section Control
Increasing Production EfficiencyIncreasing Production Efficiency
Reduced Chemical Costs
Improved Environmental Stewardship
Sprayer Automatic Section Control
Tank
Boom Shut-off Valves
Nozzles
ON-OFF Control Signal to Boom Valves or Nozzle Solenoids
Pump RegulatingValve
FlowMeter
1 2 3 4 5
1 2 3 54
As Applied MapGNSS ReceiverController + Software
Closed LoopControl
Sprayer Automatic Section Control
5.7%30 acres
6.8%23 acres
10.8%23 acres
6.7%22 acres
No Control versus Automatic 7 Section Control
Sprayer Automatic Section Control
1 2 3 4 5 60.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
7 Section Control Individual Nozzle Control
Fields
% C
he
mic
al S
av
ing
s
No Control versus Automatic 7 Section Control
Courtesy of Luck et al. (2010), University of Kentucky
Manual 5 Section Control versus Automatic Section Control
6.2% average reduction
Increasing Production Efficiency Increasing Production Efficiency
Increasing Production Efficiency Increasing Production Efficiency
• Reduced chemical costs
• Increased spraying efficiency
• Less fill-ups
• Reduced operator fatigue
• Improves environmental stewardship
• Preservation of conservation structures
Benefits
Operator Response
Needed OverlapMinimum Double-Planted Area
Hea
dla
nd
Pas
s Skipped Area
Ove
r-P
lan
t Are
a
Planter Automatic Section Control
Increasing Production Efficiency Increasing Production Efficiency
Planter Automatic Section Control
As Applied MapGNSS Receiver
Controller + Software
ControlModule
ControlModule
ControlModule
Types of Fields You Farm
Field Size (ac) Double-Plant (ac) % Double-Plant
Range 1.9 - 106 0.1 – 4.8 0.1 – 15.6
Average 33.2 1.1 4.6
Total 1725 54.7
Increasing Production SustainabilityIncreasing Production Sustainability
% DP Range < 2%Avg. % DP 0.8%
# Fields 16Field Size Range (ac) 8.1 - 106Avg. Field Size (ac) 53.3
Total Acres 853
105.5 ac
77.5 ac 69.3 ac
34.4 ac
Slightly-Irregular Fields
Increasing Production SustainabilityIncreasing Production Sustainability
% DP Range 2 % – 5%Avg. % DP 3.2%
# Fields 21Field Size Range (ac) 6.6 – 58.8Avg. Field Size (ac) 25.9
Total Acres 544
22.5 ac
23.8
30.3
16.3
Irregular Fields
Increasing Production SustainabilityIncreasing Production Sustainability
% DP Range > 5%Avg. % DP 10.5%
# Fields 15Field Size Range (ac) 1.9 – 42.5Avg. Field Size (ac) 21.9
Total Acres 328
15.9 ac
42.5 ac
20.5 ac
18.9 ac
Highly-Irregular Fields
Planter Automatic Section Control
• Reduced seed costs
• Potential yield gains
• Less risk of planting errors
• Reduced potential for lodging
• Reduced operator fatigue
• Improved machine efficiency
Benefits
• GPS/GNSS Receiver
Automatic Section Control Components
John Deere Ag Leader
TrimbleTOPCON
GPS Accuracy
GPS Correction Services
• John Deere SF2
• OmniStar HP
• RTK, Trimble’s RTX
Trimble
John Deere AgLeader
Raven
Dickey-john
TOPCON
Automatic Section Control Components
• Controller plus
Software
KINZE
Automatic Section Control Components
Row Command TruCount
SureVac
• Section Control Mechanisms
Planters
Automatic Section Control Components
• Section Control Mechanisms
Sprayers
Boom Valve Individual Nozzle
Increasing Production SustainabilityIncreasing Production Sustainability
economics.ag.utk.edu/asccc.html
Google: University of Tennessee ASCCC
Will it Make You Money?
Corn
500 acres 750 acres 1000 acres 1500 acres$0
$2,500
$5,000
$7,500
$10,000
$12,500
$15,00060%-25%-15% 30%-40%-30% 15%-25%-60%
An
nu
al
Sa
vin
gs
Will it Make You Money?
Corn (15%-25%-60%)
500 acres 750 acres 1000 acres 1500 acres$0
$2,000
$4,000
$6,000
$8,000
$10,000
$12,000
$14,000
0
1
2
3
4
5
6
7
8
9
10
With equipment Without equipment
An
nu
al
Sa
vin
gs
Pa
yb
ac
k P
eri
od
(y
rs)
Will it Make You Money?
Corn (30%-40%-30%)
500 acres 750 acres 1000 acres 1500 acres$0
$2,000
$4,000
$6,000
$8,000
$10,000
$12,000
$14,000
0
1
2
3
4
5
6
7
8
9
10
With equipment Without equipment
An
nu
al
Sa
vin
gs
Pa
yb
ac
k P
eri
od
(y
rs)
Will it Make You Money?
Soybeans
500 acres 750 acres 1000 acres 1500 acres$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
60%-25%-15% 30%-40%-30% 15%-25%-60%
An
nu
al
Sa
vin
gs
Will it Make You Money?
Soybeans (15%-25%-60%)
500 acres 750 acres 1000 acres 1500 acres$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
0
1
2
3
4
5
6
7
8
9
10With equipment
An
nu
al
Sa
vin
gs
Pa
yb
ac
k P
eri
od
(y
rs)
Without equipment__
Will it Make You Money?
Soybeans (30%-40%-30%)
500 acres 750 acres 1000 acres 1500 acres$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
0
1
2
3
4
5
6
7
8
9
10
With equip...
An
nu
al
Sa
vin
gs
Pa
yb
ac
k P
eri
od
(y
rs)
Without equipment__
What’s the Take Home Message?What’s the Take Home Message?
• Field shape and size impact ASC savings
• Consult your dealer to learn about your options
• Purchase a display that allows for technology upgrades
• For better results use higher accuracy GPS/GNSS correction service
• Maximizing productivity should be your overall management goal
Questions