Establishment of Critical Sap and Soil Nitrate Concentrations using a Cardy Nitrate Meter for Two Carrot Cultivars Grown on Organic and Mineral Soil

References

• Arora , P. N. and Mathur , R. B.L. 1972 . Note on effect of nitrogen and potash on the yield of carrots . Indian Journal of Agronomy , 17 : 116 – 117 .
   Google Scholar
• Burdine , H. W. and Hall , C. B. 1976 . Carrot responses to fertilizer levels on Everglades organic soils . Proceedings of the Florida State Horticultural Society , 89 : 120 – 125 .
   Google Scholar
• Coltman , R. R. 1988 . Yields of greenhouse tomatoes managed to maintain specific petiole sap nitrate levels . HortScience , 23 : 148 – 151 .
   Web of Science ®Google Scholar
• Delgado , J. A. and Follett , R. F. 1998 . Sap test to determine nitrate‐nitrogen concentrations in aboveground biomass of winter cover crops . Communications in Soil Science and Plant Analysis , 29 : 545 – 559 .
   Web of Science ®Google Scholar
• Geypens , M. and Vandendriessche , H. 1996 . Advisory systems for nitrogen fertilizer recommendations . Plant and Soil , 181 : 31 – 38 .
   Web of Science ®Google Scholar
• Hamilton , H. A. and Bernier , R. 1975 . N‐P‐K fertilizer effects on yield, composition and residues of lettuce, celery, carrot and onion grown on an organic soil in Quebec . Canadian Journal of Plant Science , 55 : 453 – 461 .
   Web of Science ®Google Scholar
• Hartz , T. K. , Smith , R. F. , LeStrange , M. and Schulbach , K. F. 1993 . On‐farm monitoring of soil and crop nitrogen status by nitrate‐selective electrodes . Communications in Soil Science and Plant Analysis , 24 : 2607 – 2615 .
   Web of Science ®Google Scholar
• Hipp , B. W. 1978 . Response by carrots to nitrogen and assessment of nitrogen status by plant analysis . HortScience , 13 : 43 – 44 .
   Web of Science ®Google Scholar
• Hochmuth , G. J. , Brecht , J. K. and Bassett , M. J. 1999 . Nitrogen fertilization to maximize carrot yield and quality on a sandy soil . HortScience , 34 : 641 – 645 .
   Web of Science ®Google Scholar
• Kristensen , H. L. and Thorup‐Kristensen , K. 2004 . Uptake of 15N labeled nitrate by root systems of sweet corn, carrot, and white cabbage from 0.2–2.5 meters depth . Plant and Soil , 265 : 93 – 100 .
   Web of Science ®Google Scholar
• Last , P. J. and Tinker , P. B.H. 1968 . Nitrate nitrogen in leaves and petioles of sugar beet in relation to yield of sugar and juice purity . Journal of Agricultural Science , 71 : 383 – 392 .
   Web of Science ®Google Scholar
• Lund , R. E. 1975 . Tables for an approximate test for outliers in linear models . Technometrics , 17 : 473 – 476 .
   Web of Science ®Google Scholar
• Macy , P. 1936 . The quantitative mineral nutrient requirements of plants . Plant Physiology , 11 : 749 – 764 .
   PubMedGoogle Scholar
• Maynard , D. N. and Hochmuth , G. J. 1997 . Knott's Handbook for Vegetable Growers Toronto : John Wiley & Sons .
   Google Scholar
• Ontario Ministry of Agriculture and Food . 2002 . Vegetable Production Recommendations Toronto : Queen's Printer for Ontario . (Publication 363)
   Google Scholar
• Sanderson , K. R. and Ivany , J. A. 1997 . Carrot yield response to nitrogen rate . Journal of Production Agriculture , 10 : 336 – 339 .
   Google Scholar
• Strandberg , J. O. 2001 . Monitoring growth and development of carrot on organic soils in Florida . Proceedings of the Florida State Horticultural Society , 114 : 307 – 312 .
   Google Scholar
• Thorup‐Kristensen , K. and van den Boogaard , R. 1999 . Vertical and horizontal development of the root system of carrots following green manure . Plant and Soil , 212 : 145 – 153 .
   Web of Science ®Google Scholar
• Warncke , D. D. 1996 . Soil and plant tissue testing for nitrogen management in carrots . Communications in Soil Science and Plant Analysis , 27 : 597 – 605 .
   Web of Science ®Google Scholar
• Waterer , D. 1997 . Petiole sap NO3‐N testing as a method for monitoring nitrogen nutrition of potato crops . Canadian Journal of Plant Science , 77 : 273 – 278 .
   Google Scholar
• Westcott , M. P. , Rosen , C. J. and Wraith , J. M. 1993 . Direct measurement of petiole sap nitrate in potato to determine crop nitrogen status . Journal of Plant Nutrition , 16 : 515 – 521 .
   Web of Science ®Google Scholar
• Westerveld , S. M. 2002 . “ Nitrogen management of cabbage, onions, and carrots as part of an integrated crop management program in Ontario ” . Guelph, Ontario, , Canada : University of Guelph . MSc thesis
   Google Scholar
• Westerveld , S. M. 2005 . “ Nitrogen dynamics of the carrot crop and influences on yield and Alternaria and Cercospora leaf blights ” . Guelph, Ontario, , Canada : University of Guelph . PhD thesis
   Google Scholar
• Westerveld , S. M. , McDonald , M. R. and McKeown , A. W. 2006 . Carrot yield, quality, and storability in relation to preplant and residual nitrogen on mineral and organic soils . HortTechnology , 16 ( 2 ) : 286 – 293 .
   Web of Science ®Google Scholar
• Westerveld , S. M. , McDonald , M. R. , Scott‐Dupree , C. D. and McKeown , A. W. 2005 . Assessment of a nitrate meter for nitrogen tests in mineral and organic soils . Journal of Vegetable Science , 11 ( 3 ) : 17 – 32 .
   Google Scholar
• Westerveld , S. M. , McKeown , A. W. , Scott‐Dupree , C. D. and McDonald , M. R. 2003a . Chlorophyll and nitrate meters as nitrogen monitoring tools for selected vegetables in southern Ontario . Acta Horticulturae , 627 : 259 – 266 .
   Google Scholar
• Westerveld , S. M. , McKeown , A. W. , Scott‐Dupree , C. D. and McDonald , M. R. 2003b . How well do critical nitrogen concentrations work for cabbage, carrot, and onion crops? . HortScience , 38 : 1122 – 1128 .
   Web of Science ®Google Scholar
• White , J. M. and Strandberg , J. O. 1978 . Early root growth of carrots in organic soil . Journal of the American Society for Horticultural Science , 103 : 344 – 347 .
   Web of Science ®Google Scholar
• Wiebe , H. J. 1987 . Effects of plant densities and nitrogen supply on yield harvest date and quality of carrots . Acta Horticulturae , 198 : 191 – 198 .
   Google Scholar