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Ziadi, N., Brassard, M., Bélanger, G., Cambouris, A.N., Tremblay, N., Nolin, M.C., Claessens, A. and Parent, L. (2008) Critical Nitrogen Curve and Nitrogen Nutrition Index for Corn in Eastern Canada. Agronomy Journal, 100, 271-276.
http://dx.doi.org/10.2134/agrojnl2007.0059

has been cited by the following article:

• TITLE: Critical Nitrogen Dilution Curve in Processing Potato Cultivars

  AUTHORS: Claudia Marcela Giletto, Hernán Eduardo Echeverría

  KEYWORDS: Harvest Index, N Harvest Index, Coefficient of Dilution, Processing Potato

  JOURNAL NAME: American Journal of Plant Sciences, Vol.6 No.19, December 11, 2015

  ABSTRACT: The critical nitrogen dilution curve (CNDC) can be used as a diagnostic tool to assess crop N nutrition during the growing season. Potato cultivars have different biomass production and accumulation of N and consequently different growth patterns. These differences among cultivars may result in different CNDC. The aims were a) to determine the CNDC for different potato cultivars; b) to compare these curves with reference curves; and c) to assess the possibility of using the CNDC to estimate the N nutritional status of the crop. The biomass production and N concentration of shoots and tubers of potato cultivars Innovator, Gem Russet, Umatilla Russet, Bannock Russet and Markies Russet were measured. The harvest index (HI) and N harvest index (NHI) were determined. The coefficient a of the CNDC was similar among cultivars, while the coefficients b for Innovator and Gem Russet (-0.42 and -0.36, respectively) were smaller than those for the other cultivars (average -0.25). HI and NHI were greater in Innovator, smaller in Markies Russet, and intermediated in the other three cultivars. The coefficients b of the CNDC were correlated with HI and NHI (HI, r = -0.62, p