The method for the fast estimation of a plant nitrogen status: possibility to use SPAD chlorophyll meter | Brza procena obezbedjenosti biljaka azotom: mogucnost koriscenja SPAD hlorofilmetra
2008
Bozic, D., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Simic, A., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Kresovic, M., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Vrbnicanin, S., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet | Vuckovic, S., Univerzitet u Beogradu, Beograd - Zemun (Serbia). Poljoprivredni fakultet
The main objective of this study was to test the possibility to use the SPAD-meter as an appropriate tool for the fast estimation of a nitrogen status in both, Italian ryegrass (Lolium italicum L.) and catchweed (Galium aparine L.) that occurred as a predominate Italian ryegrass weed species. The measurements of the SPAD-units were COnducted four times (from the stage of the Italian ryegrass stem elongation to the seed ripening stage, in two-week intervals) during the growing season, followed by the chemical analyses of nitrogen in the same leaf material. The high correlation between the leaf nitrogen content (expressed as a percentage per dry weight basis) and SPAD-units, were found in all treatments. Obtained results showed that method based upon using a SPAD chlorophyll meter was suitable for a quick estimation of the nitrogen status in plants.
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