The relation between the content of macroelements from soil and plant, at some plum varieties

Abstract

The minerals requirements of different species are related to the species biological feature and even depend on the every varieties characteristic feature. In this context, this article is focused on the determination of some correlation between soil and plant mineral content with a view to assure an equilibrate nutrients supply during the vegetation period. The soil supply with minerals was slightly different for the three analyzed plum cultivars (Rivers timpuriu, Stanley, Centenar), but generally, the soil had a good supply with nitrogen, phosphorus and potassium. The content of minerals on different organs had variable limits: 9.04 to 12.67% - leaves; 4.54 to 5.14% - fruits; 4.89 to 8.12% - shoots of 1 year old and 4.89 to 8.12% - shoots of 2 years old. The highest average content of minerals in the 4 organs analyzed was determined for the flowering phenophase (6.70%) and the average content of minerals for the organs analyzed in the three phenophases ranged between 6.02% (Centenar cv.) and 7.82% (Stanley cv.). For leaves, the lowest content of minerals was determined in August, during trees entrance in the dormancy period