Purdue-IndianaSeedIndustryForumCropProductionShawn.pptVIP

Purdue-Indiana Seed Industry Forum: Crop ProductionShawn P. Conley 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 Spray Canopy Penetration Row spacing by wheel track damage Yield loss by boom width Application timing by wheel track damage Seed Quality and Composition Data Seed size and percent oil and protein Uniformity Seed vigor/viability Disease considerations (FLS) Late glyphosate tank-mix applications Crop Phenology and Climatology High Yield Soybean Systems Micro-Nutrient Applications Revisit Current Recommendations Seeding rate issues Cost Herbicide technology Equipment – row spacing Seed applied technology Validation of soybean yield estimate tables Cropping Systems Research: Some Examples Corn Yield Response to Tillage and Rotation, Clay Loam, West Lafayette, IN, 1975-2004. Long-term Tillage Effects on Soil Organic Matter (1975-2003, West Lafayette, IN) Plant to Plant Variability in Corn Accepted Hypothesis: 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 Questions * * * Application Technology and Plant Health Promotion 4.1 3.3 9.8 LSD (0.05) 70.4 - - 47 49.9 59.6 - 35 4.4 21.0 90.9 24 1.0 2.5 62.4 12 1.1 2.0 8.5 0 -------------Spray coverage (%)------------- R5 R3 R1 Height in canopy (in.) Growth stage at application - 2.3 2.3 LSD (0.05) P ≥ 0.05 64.1 65.6 30 P 0.0001 66.0 70.5 15 P 0.0001 64.6 70.2 7.5 P-Value --------Yield(bu/ac)-------- Non wheel vs. wheel Wheel track Non wheel track Row spacing (inches) 1.1% 90 1.4% 75 1.8% 60 2.4% 45 3.6% 30 Yield loss Boom width - 3.3 3.3 LSD (0.05) P ≥ 0.61 66.9 67.4 Control P 0.005 65