Micronutrients content in the Virginia varieties grown under identical agroecological conditions
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Author: Penka Zaprianova
In a field experiment we studied the micronutrient content in Bulgarian (В0454, В0594, В0514) and imported Virginia varieties (Мc Nair944, K326, PVH19, С254) grown under identical agroecological conditions. We determined the general and the mobile forms of iron, manganese, copper and zinc in the soil as well as the concentration of the elements in the leaves belonging to the middle layer of gathering during the technical maturity stage. We also found substantial differences in the microelements content of the Virginia varieties grown under identical agroecological conditions. It was established that one and the same variety had a different absorbing capacity regarding the separate microelements. The concentrations of iron and manganese in all the testes varieties corresponded to the data contained in other sources. The best absorbing capacity regarding Fe was that of variety К326 and regarding Mn – В0594. The B0594 variety had a very low copper content (below the normal concentrations in the leaves) and В0594 and Мc Nair944 had very low concentrations of zinc.