Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Post-Contract Grassland Management and Winter Wheat Production on Former CRP Fields in the Southern Great Plains

Thanh H. Daoa, James H. Stieglerb, J.C. Banksc, Laurie Bogle-Boerngend and Bud Adamse

a USDA-ARS, BARC-East, Bldg. 306, Room 102, 10300 Baltimore Ave., Beltsville, MD 20705 USA
b Dep. of Plant and Soil Sciences, Oklahoma State Univ., Stillwater, OK 74078 USA
c Dep. of Plant and Soil Sciences, Oklahoma State Univ., Altus, OK 73521 USA
d Usda-Nrcs, Beaver, OK 73932 USA
e Usda-Nrcs, Altus, OK 73521 USA



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  		Fig. 1 Temperature and cumulative precipitation at the Forgan and Duke experimental sites during 1995–1997

 


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  		Fig. 2 Field-scale effects of fertilization, soils, and climate on Old World bluestem forage production in two CRP fields during 1994, 1995, 1996, and 1997

 


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  		Fig. 3 Forage crude protein concentration and yields of fertilized Old World bluestem at Forgan, OK, during the 1996 summer

 


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  		Fig. 4 Soil water content at (A) wheat planting and (B) preharvest at the Forgan site in 1994–1995

 


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  		Fig. 5 Soil water content at (A) wheat planting and (B) preharvest at the Duke site in 1994–1995

 




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