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2007 Forage Research Update Jon Repair Extension Agent, Crop and Soil Sciences (540) 463-4734

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Presentation on theme: "2007 Forage Research Update Jon Repair Extension Agent, Crop and Soil Sciences (540) 463-4734"— Presentation transcript:

1 2007 Forage Research Update Jon Repair Extension Agent, Crop and Soil Sciences (540)

2 For Discussion Orchardgrass Cutting Height Management Forage Fertility and it’s Affect on Yield Phosphorous Application Yellow Crownbeard, Wingstem, Stickweed Control Coral Berry (Devil’s Shoestring) Control Red Cedar Control

3 Orchardgrass Cutting Height Management First Year of Multi-Year Study Mowed with a Diskbine at Three Different Heights Measured Plant Density at Each Cutting and the end of the Growing Season Measured Plant Growth Between Cuttings

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5 Measuring Plant Density

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7 Phosphorous Fertility 2 ton of Litter/acre Applied in Spring of 2006 Litter Phosphorous Value = 69lbs/ton Total Phosphorous Applied = 138lbs / acre

8 Litter vs Commercial Fertilizer  Five treatments: 1)Split application of litter 60 lbs N/acre, 52 lbs P2O5/acre, 1.5 t/acre spring and ~1 st Aug 2)Inorganic fertilizer at same N and P rate as 1 3)Single application of litter 120 lbs N/acre, 104 lbs P2O5/acre, 3 t/acre all applied in spring 4)Inorganic fertilizer at same N and P rate as 3 5)Unfertilized control  5 treatments x 4 replications = 20 plots

9 Can you see fertilizer effect?

10 Yield - Rockbridge County Treatment 1 st Cut 5/11/07 2 nd Cut 7/5/07 3 rd Cut 8/23/07Total tons/acre Litter Split N Fertilizer Split N Litter Single N Fertilizer Single N No fertilizer (Control)

11 Conclusions  Fertilization with either inorganic or litter nutrients increased yield  Inorganic increased yield slightly more than litter, probably due to drought preventing litter breakdown. Some other research has shown the opposite  Drought decreased the yield response  Applying litter at an N rate increased soil P that will increase yield in future years

12 Coral Berry and Yellow Crownbeard ForeFront 2 pts/ac % Activator 90 (20 gpa) May 2007 ForeFront R&P Experimental Compounds Not Effective on Coral Berry, excellent control of wingstem

13 Coral Berry and Yellow Crownbeard ForeFront 2 pts/ac % Activator 90 (20 gpa) May 2007 ForeFront R&P

14 Surmount (picloram + 5 pts/ac % Activator 90 (30gpa) May 2007 Regrowth at end of season

15 End of Season Regrowth

16 Something New Forage Radishes as a Cover Crop Compaction-Natural Sub-Soiler Grazing Crop for Dairy Heifers Forage Quality and Yield

17 Questions Thoughts Ideas

18 PH - Rockbridge TreatmentBefore Application 1 Week1 Month Litter Split N Fertilizer Split N Litter Single N Fertilizer Single N No fertilizer (Control)


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