USE OF PRECISION FARMING TO IMPROVE APPLICATIONS OF FEEDLOTWASTE TO INCREASE NUTRIENT USE EFFICIENCY AND PROTECTWATER QUALITY

REFERENCES

• Bates , T. E. 1971 . Factors affecting critical nutrient concentrations in plants and their evaluation: a review . Soil Sci. , 112 : 116 – 130 .
   Web of Science ®Google Scholar
• Carr , P. M. , Carlson , G. R. , Jacobsen , J. S. , Nielsen , G. A. and Skogley , E. O. 1991 . Farming soils, not fields: A strategy for increasing fertilizer profitability . J. Prod. Agric. , 4 : 57 – 61 .
   Google Scholar
• Hornick , S. B. 1982 . Organic wastes for revegetating marginal lands . Biocycle , 23 : 42 – 43 .
   Google Scholar
• Hunge , Chao-Wong Luh and Schulte , E. E. 1985 . Digestion of plant tissue for analysis by ICP emission spectroscopy . Commun. Soil Sci. Plant Anal. , 16 : 943 – 958 .
   Web of Science ®Google Scholar
• Larney , F. J. and Janzen , H. H. 1996 . A stimulated erosion approach to assess rates of cattle manure and phosphorus fertilizer for restoring productivity to eroded soils . Agric. Ecosys. Environ. , 65 : 113 – 126 .
   Web of Science ®Google Scholar
• Littell , R. D. , Milliken , G. A. , Stroup , W. W. and Wolfinger , R. D. 1996 . SAS system for mixed models Cary , NC : SAS Insst. .
   Google Scholar
• McCalla , T. M. 1974 . Use of animal wastes as a soil amendment . J. Soil Water Cons. , 29 : 213 – 216 .
   Web of Science ®Google Scholar
• Meek , B. D. , Graham , L. E. , Donovan , T. J. and Mayberry , K. S. 1979 . Phosphorus availability in a calcareous soil after high loading rates of animal manure . Soil Sci. Soc. Am. J. , 43 : 741 – 744 .
   Web of Science ®Google Scholar
• Missouri Agricultural Experiment Station SB 1001 Recommended chemical soil test procedures for the North Central Region , North Central Regional Research Publication No.221(Revised) .
   Google Scholar
• Peterson , T. A. , Blackmer , T. M. , Francis , D. D. and Schepers , J. S. 1993 . “ Using a chlorophyll meter to improve N management ” . In Cooperative Extension Service , NebGuide G93-1171-A Lincoln : University of Nebraska .
   Google Scholar
• Schepers , J. S. , Blackmer , T. M. and Francis , D. D. 1998 . “ Chlorophyll meter method for estimating nitrogen content in plant tissue ” . In Handbook of References Methods for Plant Analysis Edited by: Kalra , Y. P. 129 – 135 . Boca Raton , FL : CRC Press .
   Google Scholar
• Sharpley , A. N. and Smith , S. J. 1995 . Nitrogen and phosphorus forms in soils receiving manure . Soil Sci. , 159 : 253 – 258 .
   Web of Science ®Google Scholar
• Sommerfeldt , T. G. and Chang , C. 1985 . Changes in soil properties under annual applications of feedlot manure and different tillage practices . Soil Sci. Soc. Am. J. , 49 : 983 – 987 .
   Web of Science ®Google Scholar
• Sommerfeldt , T. G. , Chang , C. and Entz , T. 1988 . Long-term annual manure applications increase soil organic matter and nitrogen, and decrease carbon to nitrogen ratio . Soil Sci. Soc. Am. J. , 52 : 1668 – 1672 .
   Web of Science ®Google Scholar
• Sweeten , J. M. and Mathers , A. C. 1985 . Improving soils with livestock manure . J. Soil Water Conserv. , 40 : 206 – 210 .
   Web of Science ®Google Scholar
• Tiarks , A. E. , Mazurak , A. P. and Chesnin , L. 1974 . Physical and chemical properties of soil associated with heavy applications of manure from cattle feedlots . Soil Sci. Soc. Am. Proc. , 38 : 826 – 830 .
   Web of Science ®Google Scholar
• Wood , C. W. , Reeves , D. W. , Duffield , R. R. and Edmisten , K. L. 1992 . Field chlorphyll measurements for evaluation of corn nitrogen status . J. Plant Nutr. , 15 : 487 – 500 .
   Web of Science ®Google Scholar