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Blacksburg, Virginia - Virginia Tech

Blacksburg, Virginia - Virginia Tech

esponds well to above

esponds well to above average rainfall. Total Yield (kg DM ha -1 ) Total Yield (kg DM ha -1 ) 8000 6000 4000 2000 0 8000 6000 4000 2000 0 A. y = 3572.38 + 28.01x - 0.14x 2 r 2 = 0.3561 p = 0.0017 0 20 40 60 80 100 120 140 a Nitrogen Rate (kg N ha -1 ) B. Broiler Litter Ammonium Nitrate Nitrogen Source Figure 3-9. Seasonal accumulation of biomass yield as impacted by N rate averaged over N source (A) and N source averaged over N rate (B), Shenandoah Valley, 2009. 39 a

Total Yield (kg DM ha -1 ) Total Yield (kg DM ha -1 ) 8000 6000 4000 2000 0 8000 6000 4000 2000 0 A. y = 5620.73 + 47.95x - 0.33x 2 r 2 = 0.2064 p = 0.0350 0 20 40 60 80 100 120 140 a Nitrogen Rate (kg N ha -1 ) B. Broiler Litter Ammonium Nitrate Nitrogen Source Figure 3-10. Seasonal accumulation of biomass yield as impacted by N rate averaged over N source (A) and N source averaged over N rate (B), Shenandoah Valley, 2010. 40 a

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