1. Purdue-Indiana Seed Industry Forum: Crop Production Shawn P. Conley

2. Research and Extension PI’s and Staff 7 Faculty Shawn P. Conley Bob Nielsen Tony Vyn Sylvie Brouder Brad Joern Dev Niyogi Jim Camberato 3 technicians 13 graduate students

3. Application Technology and Plant Health Promotion

7. Spray Canopy Penetration Growth stage at application Height in canopy (in.) R1R3R5 -------------Spray coverage (%)------------- 08.52.01.1 1262.42.51.0 2490.921.04.4 35-59.649.9 47--70.4 LSD (0.05)9.83.34.1

8. Row spacing by wheel track damage Row spacing (inches) Non wheel track Wheel track Non wheel vs. wheel --------Yield(bu/ac)--------P-Value 7.570.264.6P < 0.0001 1570.566.0P < 0.0001 3065.664.1P ≥ 0.05 LSD (0.05)2.3 -

9. Yield loss by boom width Boom widthYield loss 303.6% 452.4% 601.8% 751.4% 901.1%

10. Application timing by wheel track damage TimingNon wheel track Wheel track Non wheel vs. wheel -------Yield (bu/ac)-------P-value R167.965.8P ≥ 0.05 R370.565.5P < 0.0001 R568.063.1P < 0.0001 R3+R569.863.1P < 0.0001 R1+R3+R569.065.4P < 0.005 Control67.466.9P ≥ 0.61 LSD (0.05)3.3 -

11. Implications of Aerial Application

14. Seed Quality and Composition Data Seed size and percent oil and protein Uniformity Seed vigor/viability Disease considerations (FLS) Late glyphosate tank-mix applications

15. Crop Phenology and ClimatologyCrop Phenology and Climatology High Yield Soybean SystemsHigh Yield Soybean Systems Micro-Nutrient ApplicationsMicro-Nutrient Applications

16. Revisit Current Recommendations Seeding rate issues Cost Herbicide technology Equipment – row spacing Seed applied technology Validation of soybean yield estimate tables

18. Cropping Systems Research: Some Examples Tony J. Vyn, with assistance from farmers, graduate students, technicians, and colleagues

19. Corn Yield Response to Tillage and Rotation, Clay Loam, West Lafayette, IN, 1975-2004.

20. Long-term Tillage Effects on Soil Organic Matter (1975-2003, West Lafayette, IN) Soil Depth (in) Organic Matter (%)

21. Yield levels (Mg ha -1 ) c b a a b b a a c b a a Isoflavone concentrations at different seed yield levels.†

22. Plant to Plant Variability in Corn

23. Accepted Hypothesis: Delayed Seedling Emergence Shorter Plants Shorter Plants Delayed Maturity Delayed Maturity Smaller ears at harvest Smaller ears at harvest Delayed Silk Emergence Delayed Silk Emergence Uniform Ear Size in High Yield Corn

24. Emergence date Silking Date & Plant Height - + Individual Plant YieldIndividual Plant Yield Tentative Conclusions: Effect For consistent individual ear weights and high yields we need to make sure “No Plant Left Behind!”

25. Large Plot Corn Research Examples Effect of uneven plant spacing and ear size characteristics on grain yield and replant decisions Interaction between corn seeding rates and nitrogen application rates Evaluating the consequences of one-time yield monitor calibrations on estimated grain flow rates throughout the harvest season

26. Questions