Precision Farming ‐ Growing to Remain Leaders in Sugar Agenda: • Variable Rate Seeding Project • Plant Pattern Spacing (Diamond Study) • Effect of Wind on Seed Placement • eSet Precision Planter Study • JD i‐Guide™ System • Down Force Control – 20/20 Airforce • Capstan Spray Drift Control System • Truck Weight Monitor • Ditches, Shelterbelts and Headlands • Tile Drainage Effect of Variable Rate Seeding on Sugarbeet Production Lynn Dusek*, Curtis Funk, Joe Hastings, & Allan Cattanach; American Crystal Sugar Company, Moorhead, MN Introduction & Objectives • Establishing optimum plant populations…a critical factor for optimizing sugarbeet yield & quality • Objective study conducted at 6 locations in 2008‐ 2010 was to determine optimum plant populations for different management zones in commercial fields • Optimum seed spacing trends for high, intermediate, and low productivity zones were observed for different management zones 3‐Year Average Revenue Per Acre Trend (2008‐2010) MHD & CRK $1,550 $1,500 $1,450 e $1,400 r c A r e p $1,350 s r a l l o D $1,300 $1,250 $1,200 $1,150 Narrow Spacing Typical Spacing Wide Spacing High Productivity Zone Intermediate Productivity Zone Zone Low Productivity Zone 3‐Year Average Recoverable Sugar per Acre Trend (2008‐2010) MHD & CRK 10,500 10,000 9,500 s d n 9,000 u o P 8,500 8,000 7,500 Narrow Spacing Typical Spacing Wide Spacing High Productivity Zone Intermediate Productivity Zone Low Productivity Zone 3‐Year Average Recoverable Sugar per Ton Trend (2008‐2010) MHD & CRK 332 330 328 326 s d n u o P 324 322 320 318 Narrow Spacing Typical Spacing Wide Spacing High Productivity Zone Intermediate Productivity Zone Low Productivity Zone 2010 Variable Rate Seeding Trial – HLB District Green Zones = Hills Yellow Zones = Mid Slopes (Flat) Red Zones = Depressions Treatment RST RSA Rev/Acre 3.5G 329 9598 $1,557 4.5G 331 9442 $1,543 5.5G 322 9467 $1,505 3.5 I 337 9543 $1,584 4.5 I 337 9195 $1,525 5.5 I 336 9537 $1,578 3.5D 323 9082 $1,450 4.5D 318 8040 $1,264 5.5D 325 9366 $1,475 *Revenue Based on 2010 Crop Nov Payment Forecast Conclusions – Seed Spacing Optimum seed spacing determined based on this study for productivity zones: (Yellow) High(Green) Intermediate Low(Red) 4.9”‐5.5” 4.3”‐4.6” 3.5”‐3.9” ___________________________________________________ Optimum ranges for plant populations based on this study: (Plants per Acre) (Yellow) High(Green) Intermediate Low(Red) 35‐42,000 42‐47,000 47‐55,000 Conclusions • Selecting the right seed spacing increased RSA: – 156 ‐ 1,415 lbs. for high production zones – 325 ‐ 737 lbs. for intermediate production zones – 103 ‐ 1,326 lbs. for low production zones • Harvest losses were greatest for higher plant populations required for maximizing yields in low productivity zones
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