Catalina Cimpeanu, Corneliu Podina, Catalina Barna, MARINA ILIESCU<br>32P radionuclidic Labeling in the Study of Agrochemical<br> Efficiency of Some Extra-radicular Fertilizers Based <br>on Proteins and Amino Acids

Catalina Cimpeanu, Corneliu Podina, Catalina Barna, MARINA ILIESCU
32P radionuclidic Labeling in the Study of Agrochemical
Efficiency of Some Extra-radicular Fertilizers Based
on Proteins and Amino Acids

Abstract:

This paper presents a study on the possible use of 32P radionuclidic labeling of some unconventional fertilizers based on proteins and amino acids, in order to determine their agrochemical and ecological efficiency. Optimal conditions for 32P radionuclidic labeling, foliar treatment procedures of the plants and methods for biological material conditioning were established for four types of extra-radicular fertilizers. The quantities of phosphorous translocated from the leaves (the application place) to different plant organs (other leaves, stems and flowers) were determined by adequate radiochemical analytical methods. We found a significant translocation of 32P from the leaves it was applied on, to the other plant organs. The 32P translocated depends on the labeled fertilizer’s nature and, for a given fertilizer the foliar application efficiency is influenced by some factors like the pH of the fertilizer solution, relative humidity, leaves age etc. Key words: radionuclidic labeling, extra-radicular fertilizers, agrochemical efficiency, radiochemical analytical methods

Issue: 2012, Volume 63, Issue 5

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This article is published under the Creative Commons Attribution 4.0 International License

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