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Journal of Plant Nutrition Volume 24, 2001 - Issue 2
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Original Articles

OPTIMUM FIELD ELEMENT SIZE FOR MAXIMUM YIELDS IN WINTER WHEAT, USING VARIABLE NITROGEN RATES

J. M. LaRuffa Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
,
W. R. Raun Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
,
S. B. Phillips Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
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J. B. Solie Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
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M. L. Stone Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
&
G. V. Johnson Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, 74078-0507, U.S.A.
Pages 313-325 | Published online: 16 Aug 2006

REFERENCES

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  • Sawyer , J. E. 1994 . Concepts of Variable Rate Technology with Considerations for Fertilizer Application . J. Prod. Agric. , 7 : 195 – 201 .
  • Solie , J. B. , Raun , W. R. , Whitney , R. W. , Stone , M. L. and Ringer , J. D. 1996 . Optical Sensor Based Field Element Size and Sensing Strategy for Nitrogen Application . Trans. ASAE , 39 ( 6 ) : 1983 – 1992 .
  • Stone , M. L. , Solie , J. B. , Whitney , R. W. , Raun , W. R. and Lees , H. L. 1996 . Sensors for Detection of Nitrogen in Winter Wheat , SAE Technical Paper Series, SAE Paper No. 961757 Warrendale, PA : SAE .
  • Stone , M. L. , Solie , J. B. , Raun , W. R. , Whitney , R. W. , Taylor , S. L. and Ringer , J. D. 1996 . Use of Spectral Radiance for Correcting In-Season Fertilizer Nitrogen Deficiencies in Winter Wheat . Trans. ASAE , 39 ( 5 ) : 1623 – 1631 .
  • Roth , G. W. , Fox , R. H. and Marshall , H. G. 1989 . Plant Tissue Tests for Predicting Nitrogen Fertilizer Requirements of Winter Wheat . Agron. J. , 81 : 502 – 507 .
  • Large , E. C. 1954 . Growth Stages in Cereals . Plant Pathol. , 3 : 128 – 129 .
  • Raun , W. R. , Johnson , G. V. , Stone , M. L. , Solie , J. B. , Thomason , W. E. and Lukina , E. V. 1999 . In-Season Prediction of Yield Potential in Winter Wheat . Better Crops , 83 ( 2 ) : 24 – 25 .
  • Raun , W. R. , Solie , J. B. , Stone , M. L. , Johnson , G. V. , Lukina , E. V. , Thomason , W. E. and Schepers , J. S. in press . In-Season Prediction of Wheat Yield Potential Using Canopy Reflectance . Agron. J. ,
  • Schepers , J. S. , Francis , D. D. and Thompson , M. T. 1989 . Simultaneous Determination of Total C, Total N, and 15N on Soil and Plant Material . Commun. Soil Sci. Plant Anal. , 20 ( 9&10 ) : 949 – 959 .
  • Moll , R. H. , Kamprath , E. J. and Jackson , W. A. 1982 . Analysis and Interpretation of Factors which Contribute to Efficiency of Nitrogen Utilization . Agron J. , 74 : 562 – 564 .
  • 1988 . “ SAS Institute, Inc. ” . In SAS/STAT User's Guide , 6.03 Edn. Cary, NC : Statistical Analysis System Institute Inc. .
  • Lukina , E. V. , Stone , M. L. and Raun , W. R. 1999 . Estimating Vegetation Coverage in Wheat Using Digital Images . J. Plant Nutr. , 22 ( 2 ) : 341 – 350 .

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