01504naa a2200205 a 450000100080000000500110000800800410001910000180006024500840007826000090016252009400017165000090111165000100112065300230113065300190115365300250117265300210119770000180121877300620123616021881995-06-27       1974    bl ---       0--  u    #d1 aRIVARD, C. E.  aEffect of variety on nutrient composition of field corn.h[electronic resource]  c1974  aSignificant varietal differences in plant nutrient content have been reported in the literature which would make extremaly difficult the interpretation of plant analysis results for diagnosing plant nutritional problems. This investigation was conducted to analyze a relatively large number of uniformly fertilized commercially grown corn (Zea mays) varieties for possible differences in N ,P, K, Ca, and Mg concentrations. Whole young plants 60 to 90 cm tall ear leaves collected at tasselling were chemically analyzed. Varietal differences in the doncentrations of N, P, K, and Ca in field corn were statistically significant. Variable differences in Mg concentrations were significant in three out of the six sets of data. In spite of statistical significance, plant nutrient concentrations were found to be within expected limits for the morphological parts and growth stages examined except for ear leaf P levels in two Varieties.  acorn  aMilho  aAnálise de planta  aPlant analysis  aVarietal differences  aVARIOS ELEMENTOS1 aBANDEL, V. A.  tCommum. Soil Sci. Plant Anal.gv.5, n.3, p.229-242, 1974.