2 1 3 4 25ft Tarp Configuration Application width 40ft 0 0.5 1 1.5 2 2.5 1 2 3 4 5 6 Tons/acre Compost Application Measurement With Overlap (Application Rate 2 Tons/Acre) Avg of Left & Rright Tarp Measurements Avg of Center Tarp Measurements 0 0.5 1 1.5 2 2.5 3 3.5 1 2 3 Tons/acre Compost Application Measurement With Overlap (Application Rate 3 Tons/Acre) Avg of Left & Rright Tarp Measurements 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 Tons/acre Measured vs Target Application Rate (Raw Manure) Average 13.3 tons per acre +/- 7 tons per acre (n=18) Targeted 20 Tons/acre application Training Manure- and Compost-Spreading Contractors for the Cattle-Feeding Industry in the Texas Panhandle • Pen maintenance is conducted by feedyard. • Manure loading is conducted by contractors. • Contractors haul/spread all manure & compost. • Average hauling distance 5-10 miles. • Hauling charge ~$0.25 / ton / mile. • Feedyards provide haulers with annual manure nutrient analysis. • Feedyards are uncertain as to level and type of training that haulers/equipment operators have received. • Custom manure/compost haulers will have an enhanced understanding of surface water quality issues related to manure/compost application, to include bacteria and nutrients. • Custom manure/compost haulers will have an enhanced understanding of manure application best management practices. • Operators of manure/compost spreaders will understand the methodologies for field calibration of manure/compost spreading equipment. • Materials and trainings available in English and Spanish. Project Goals Acknowledgments environmental knowledge operator training BMP adoption Assess Train water quality concepts manure characteristics sampling technique spreader calibration Demonstrate agronomic rates nutrient mining soil-runoff relationships Promote manure use machinery management soil and manure sampling nutrient balancing This project is funded by the U. S. Environmental Protection Agency through a Section 319(h) water quality grant administered by the Texas State Soil and Water Conservation Board. Project personnel wish also to acknowledge the numerous landowners who have generously made their cropland available to us for manure, soil, and water sampling and for BMP demonstrations. B. Weinheimer 1 , B. Auvermann 2 , P. DeLaune 3 , K. Heflin 2 , G. Marek 4 , and M. Rhoades 5 1 Texas Cattle Feeders Association, Amarillo, TX; 2 Texas A&M AgriLife Extension Service, Amarillo, TX; 3 Texas A&M AgriLife Research, Vernon, TX; 4 USDA-ARS Conservation and Production Laboratory, Bushland, TX; 5 West Texas A&M University, Canyon, TX • Application width and overlap are the primary factors influencing “single” pass estimates • Compost spreaders typically spread 40ft in a single-pass with 50% overlap on each pass • Measurements from a single pass will be half the targeted application rate • Compost spreaders use technology to increase the precision of the application. Technologies include • GPS assisted steering • Ground radar for speed control • Load cells to control compost application rate Calibrating Compost Spreaders Step 1. Lay out 28” x 112” tarps in a line with long axis in direction of spreader travel. The tarps need to start far enough into the field that the spreader will be discharging at full capacity by the time you reach the tarps. Use 5-8 tarps for best results. Secure the tarps with heavy weights. Step 2. Run the spreader down the line of tarps, being careful not to run tires over them in any way. Step 3. Approach each tarp with a good quality fishing scale and a second tarp for weighing. The second tarp should be clean and square. Step 4. Carefully collect the manure from the tarp and pour onto the clean tarp. Step 5. Collect the corner grommets and hang them on the fish scale. Subtract the tarp weight. Each pound on the scale is one ton per acre. Single-Pass Calibration http://manurespreading.tamu.edu/ Preliminary Survey Results Measures of Success
Training Manure- and Compost-Spreading Contractors for the Cattle-Feeding Industry in the Texas Panhandle
Nov 11, 2014
Proceedings available at: http://www.extension.org/67721
Manure and compost companies have strived over the years to provide a service to both feedyards and crop producers in the most cost-effective manner possible. Unfortunately, little attention has been given to environmental impacts, by this important segment of the cattle feeding industry. This project, through training and demonstrations, will establish a program to provide for long-term implementation of best management practices (BMP) to be used during the land application of manure or compost. This will give producers a greater assurance that using manure or compost in their nutrient management programs has tremendous benefits and can be applied in a manner that is protective of the environment.
Presented by: Kevin Heflin
Manure and compost companies have strived over the years to provide a service to both feedyards and crop producers in the most cost-effective manner possible. Unfortunately, little attention has been given to environmental impacts, by this important segment of the cattle feeding industry. This project, through training and demonstrations, will establish a program to provide for long-term implementation of best management practices (BMP) to be used during the land application of manure or compost. This will give producers a greater assurance that using manure or compost in their nutrient management programs has tremendous benefits and can be applied in a manner that is protective of the environment.
Presented by: Kevin Heflin
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2
1
3 4
25ft
Tarp Configuration
Application width 40ft
0
0.5
1
1.5
2
2.5
1 2 3 4 5 6
Ton
s/ac
re
Compost Application Measurement With Overlap (Application Rate 2 Tons/Acre)
Avg of Left & Rright Tarp Measurements
Avg of Center Tarp Measurements
0
0.5
1
1.5
2
2.5
3
3.5
1 2 3
Ton
s/ac
re
Compost Application Measurement With Overlap (Application Rate 3 Tons/Acre)
Avg of Left & Rright Tarp Measurements
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
Ton
s/ac
re
Measured vs Target Application Rate (Raw Manure) Average 13.3 tons per acre +/- 7 tons per acre (n=18)
Targeted 20 Tons/acre application
Training Manure- and Compost-Spreading Contractors for the Cattle-Feeding Industry in the Texas Panhandle
• Pen maintenance is conducted by feedyard.
• Manure loading is conducted by contractors.
• Contractors haul/spread all manure & compost.
• Average hauling distance 5-10 miles.
• Hauling charge ~$0.25 / ton / mile.
• Feedyards provide haulers with annual manure nutrient analysis.
• Feedyards are uncertain as to level and type of training that haulers/equipment operators have received.
• Custom manure/compost haulers will have an enhanced understanding of surface water quality issues related to manure/compost
application, to include bacteria and nutrients. • Custom manure/compost haulers will have an enhanced understanding of manure application best management practices. • Operators of manure/compost spreaders will understand the methodologies for field calibration of manure/compost spreading
equipment. • Materials and trainings available in English and Spanish.
Project Goals
Acknowledgments
environmental knowledge operator training BMP adoption
Assess
Train
water quality concepts manure characteristics sampling technique spreader calibration
Demonstrate agronomic rates nutrient mining soil-runoff relationships
Promote manure use machinery management soil and manure sampling nutrient balancing
This project is funded by the U. S. Environmental Protection Agency through a Section 319(h) water quality grant administered by the Texas State Soil and Water Conservation Board.
Project personnel wish also to acknowledge the numerous landowners who have generously made their cropland available to us for manure, soil, and water sampling and for BMP demonstrations.
B. Weinheimer1, B. Auvermann2, P. DeLaune3, K. Heflin2, G. Marek4, and M. Rhoades5
1Texas Cattle Feeders Association, Amarillo, TX; 2Texas A&M AgriLife Extension Service, Amarillo, TX; 3Texas A&M AgriLife Research, Vernon, TX; 4USDA-ARS Conservation and Production Laboratory, Bushland, TX; 5West Texas A&M University, Canyon, TX
• Application width and overlap are the primary factors influencing “single” pass estimates
• Compost spreaders typically spread 40ft in a single-pass with 50% overlap on each pass
• Measurements from a single pass will be half the targeted application rate • Compost spreaders use technology to increase the precision of the application.
Technologies include • GPS assisted steering • Ground radar for speed control • Load cells to control compost application rate
Calibrating Compost Spreaders
Step 1. Lay out 28” x 112” tarps in a line with long axis in direction of spreader travel. The tarps need to start far enough into the field that the spreader will be discharging at full capacity by the time you reach the tarps. Use 5-8 tarps for best results. Secure the tarps with heavy weights.
Step 2. Run the spreader down the line of tarps, being careful not to run tires over them in any way.
Step 3. Approach each tarp with a good quality fishing scale and a second tarp for weighing. The second tarp should be clean and square.
Step 4. Carefully collect the manure from the tarp and pour onto the clean tarp.
Step 5. Collect the corner grommets and hang them on
the fish scale. Subtract the tarp weight. Each pound on
the scale is one ton per acre.
Single-Pass Calibration
http://manurespreading.tamu.edu/
Preliminary Survey Results
Measures of Success
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