Determination of the changes of some nutrient elements in the cherry laurel plant

In this study, the variations of mineral nutrients were determined in leaf samples taken in May, June and July in cherry laurel (Prunus laurocerasus L.) orchard containing 26 different genotypes of "Odü" and "Alis" cultivars grown in Ordu province. According to the results obtained, phosphorus (P) concentration of leaf samples taken in different (May-June-July) periods varied between 0.12% and 0.60% and P concentration in leaves tended to decrease from May to July, while K, Ca, Mg, Fe, Cu, Zn and Mn concentrations fluctuated between May and July. In this fluctuation, it was determined that nutrients generally tended to decrease in the second period and increase in the third period compared to the first period. As a result, in order to determine the most appropriate sampling time for the determination of nutrient deficiencies in cherry laurel plants, sampling should be carried out in more months.