Macro and Micronutrients Contents in Walnut Leaves (Juglans regia L.) (Southern Kyrgyzstan)

Abstract

In this work, the subject of research is the study of the elemental composition of walnut leaves (Juglans regia L.). Studies have been carried out to determine the content of micro- and macroelements in walnut leaves (Juglans regia L.), compare with literature data and to study the features of its elemental composition for the possibility of using it in production. There were revealed the no significant differences in the content of micro- and macro elements in plants growing under the same geochemical conditions, the walnut leaves (Juglans regia L.) have a high content of some micro and macro elements. To compare the results of studies of the content of micro- and macroelements, the data of A. Kabata-Pendias, V. F. Samusenko and clark in plants according to acad. A. P. Vinogradova. As a result of the research, a relatively high value of Sr (108 mg/kg of dry matter) was found in the middle zone of the leaves of the walnut-fruit forest Kara-Alma, which is up to 4 times higher than in the upper zone of the walnut-fruit forest of Arslanbob. The content of nickel (Ni) basic in the studied areas varies slightly, the smallest amount was noted — 0.2 mg/kg of dry matter. According to the content of copper (Cu) in the leaves, a low level was noted in the lower zone of the Arslanbob walnut-fruit forest. According to our studies, the content of iron (Fe) in the form of compounds in walnut leaves ranged from 0.7 to 3.6 g/kg (3600 mg/kg). The largest number was found in the area in the middle lane of the Kara-Alma walnut-fruit forest. For the first time, the content of micro- and macroelements was studied by the method of emission spectral analysis and the content of micro- and macroelements in the leaves of walnut (Juglans regia L.) during the growing season under natural conditions. Research data can be used in assessing the quality of walnut fruits, as well as in the preparation of medicinal raw materials.Finally, recommendations are given for studying the seasonal variability of the elemental composition of walnut leaves (Juglans regia L.).