1. Economics of Precision Ag Tim Norris – Ag Info Tech, LLC.

2. How much nitrogen should we put down at side dress? I typically put 20 gals 28% as a carrier for the herbicide. 60 units of N. –Not stabilized and it is spread on top of the ground. Starter – I am not using any. Map is variable rate spread with rates from Zero to 400 lbs. 0 to 44 lbs. of N Organic Matter is 1.2% to 3.5%. Organic N is 24 – 70 lbs. Total N before side dress is 84 to 174 lbs. to the acre.

3. How much nitrogen should we put down at side dress? How much denitrification has occurred? Is there more organic N there than we think? So what is the correct rate? What would 10 extra gals of 28% cost me? $340 @ ton, it would be $18.14 acre. How much yield would I lose if I were 10 gals short? Do you want to rely on a crap shoot?

4. 2011 Test Parameters 28% Nitrogen @ $340 ton Corn @ $6.00 bu. Applied in a band with Ag Leader OptRx and DirectCommand on a Case Sprayer Applications were performed in the V6-V8 growth stages 25 Gal 28% down at planting

6. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test A –Straight Rate 34.45 Gal. = 203.10 bu./acre –OptRx 25.93 Ave Rate = 213.42 bu./acre –Saved 8.52 gals. 28% for a savings of $15.42 –Yielded 10.32 bu. more, an increase of $61.92 –Total Return Per Acre $77.34

7. Yield Map Red Low Green High OptRx Used Here Straight Rate 35 GPA Here

8. Hardscrabble Farms Delaware, Ohio Home Farm Test A –Straight Rate 24.99 Gal. = 177.24 bu./acre –OptRx 27.29 Ave Rate = 193.49 bu./acre –Saved -2.3gals. 28% for a savings of -$4.16 –Yielded 16.2 bu. more for an increase of $97.20 –Total Return Per Acre $93.04

9. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test B –Straight Rate 25.04 Gal. = 223.07 bu./acre –Straight Rate 29.81 Gal. = 230.02 bu./acre –Straight Rate 34.38 Gal. = 233.46 bu./acre –OptRx 23.59 Ave Rate = 234.61 bu./acre

10. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test B –28% Savings compared to OptRx 23.59 gal. average rate Rate Gal Over OptRx$ OptRx Adv. –25.04 gal.1.45 gal. $2.62 –29.81 gal.6.22 gal. $11.25 –34.38 gal. 10.79 gal. $19.52

11. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test B –Yield Advantage of OptRx 234.61 Bu. compared to straight rates Rate Yield dif. $ OptRx Adv. –25.04 gal. 11.54 bu. $69.24 –29.81 gal.4.59 bu. $27.54 –34.38 gal. 1.15 bu. $ 6.90

12. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test B –Total OptRx Advantage Rate $ OptRx Adv. –25.04 gal. $71.86 –29.81 gal. $38.79 –34.38 gal. $26.42

13. Hardscrabble Farms Delaware, Ohio Home Farm Test B –Straight Rate 25.99 Gal. = 224.45 bu./acre –Straight Rate 29.66 Gal. = 223.44 bu./acre –OptRx 30.49 Ave Rate = 237.84 bu./acre

14. Hardscrabble Farms Delaware, Ohio Home Farm Test B –28% Savings compared to OptRx 30.49 gal. average rate Rate Gal Over OptRx$ OptRx Adv. –25.05 gal.-5.44 gal. -$9.84 –29.66 gal. -.83 gal. -$1.50

15. Hardscrabble Farms Delaware, Ohio Home Farm Test B –Yield Advantage of OptRx 237.84 Bu. compared to straight rates Rate Yield dif. $ OptRx Adv. –25.05 gal.13.39 bu. $80.34 –29.66 gal.14.40 bu. $86.40

16. Hardscrabble Farms Delaware, Ohio Schnipke Farm Test B –Total OptRx Advantage Rate $ OptRx Adv. –25.05 gal. $70.51 –29.66 gal. $84.90

17. Hardscrabble Farms Delaware, Ohio Average OptRx Advantage for 2011 $66.12 per acre.

18. With a $21,500 Investment What Is My ROI? 500 acres of corn at $49.62 per acre = $24,810 annually payback in 1 year. 500 acres of corn at a $20 per acre = $10,000 annually payback in 2.5 years. If you already have a display and GPS you have half the cost.

19. High Clearance Application Alternatives High clearance coulter injector. Dribble with high clearance sprayer. Spread stabilized urea or other source on dry N with high clearance spreader.

20. Take home message The technology is here. It has been proven to be an active prediction of plant stress. That prediction when compared to a N rich strip will provide a fairly accurate prediction of what the crops nitrogen needs are. Responses we have seen show that the sensors will pay for themselves quickly. The two years I showed were wet springs.