PJB-2019-408
A STUDY ON THE EFFECT OF LEONARDITE APPLICATION ON NUTRIENT CONTENTS AND SOME FRUIT CHEMICAL PARAMETERS IN CHERRY (Prunus avium L.)
Dr. Tuncay DEMİRER
Abstract
In the research, the effect of leonardite applied at different doses on nutrient contents and some fruit chemical parameters in cherry (Prunus avium L.) was explored. The randomized blocks experimental design, with 12 plots, and 3 replications at 4 doses, was used in the research. Cherry Ziraat 900, inoculated on the Gisela 6 rootstock, was used as the test plant. Leonardite application doses were determined to be 0 – 2 – 4 and 8 kg.tree-1. The research was conducted on a total of 300 cherry trees(12x25=300) in a 10-year-old orchard with a planting space of 5.0 m x 2.5 m per tree and being 25 trees at each plot. In this context, in addition to the chemical fertilizers needed, leonardite was applied according to the doses determined, by being mixed into the driplines of the trees at 20 cm depth. After the fruits have reached agronomic and technological maturity, the leaf samples taken from each plot were analyzed in terms of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), zinc, (Zn), iron (Fe), manganese (Mn) and copper (Cu), and the fruit samples were analyzed in terms of pH, total soluble solids (% TSS), total phenolic content (mg GAE.100 g-1FW), and antioxidant activity (µmol TE/g FW). In conclusion, depending on and in parallel with the increased application doses; leonardite application doses were found to be statistically positive significant at p<0.01 significance level in all of the parameters analyzed except for the Mg. Keywords: Cherry, antioxidant, phenolic compounds, dry matter, plant nutrition, leonardite.
To Cite this article:
Download
