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Title

THE DETERMINATION OF NITROGEN REQUIREMENT OF WHEAT'S CULTIVARS (TRITICUM AESTIVUM L.) USING LEAF COLOR CHART (LCC) 1

Pages

 Start Page 27 | End Page 38

Keywords

LEAF COLOR CHART (LCC)Q3

Abstract

 In order to evaluate the NITROGEN (N) requirement of WHEAT (Triticum aestivum L.) by using leaf color chart (LCC), a greenhouse experiment was conducted using factorial method in completely randomized design, in three replications. In this study, two cultivars (Pishtaz: C1 and Sepahan: C2) and five NITROGEN rates (N1:0, N2:40, N3:80, N4:120 and N5:160 mg N/Kg) were studied. Plant sampling (total N was determined in the samples) and LCC reading were done in three WHEAT's growth stages: Z21, Z31 and Z37 (Zadoks Growth Scale). Results showed that in all growth stages there is a positive significant regression between sample's LCC reading and N content. The highest level of regression was in Z37 (Flag leaf just visible) that make sit possible to determine the N decline by using LCC in the situation of this study. The critical values of LCC reading were 3 for the Pishtaz cultivar and 4 for the Sepahan cultivar for this experiment.

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