EFFECT OF FERTILIZATION ON THE LEAF MACRONUTRIENT CONCENTRATIONS OF OLIVE TREE
A fertilizer subtractive trial was established in an olive grove, cv. Galega, installed on a Calcaric Cambisol, in the Portuguese Region of Ribatejo. During four years N, P, K and Mg were annually applied to the soil, as well as Fe, Mn, Zn, Cu, B and Mo applied by foliar spraying. The macronutrient seasonal trend, both in trees with and without fertilization, was studied from full blossom to 310 days after. Fertilization leads to a significant leaf-N increase both in bearing and non-bearing years as well as a leaf-K decrease in bearing ones. In non bearing years the concentrations of leaf-N, P and K were higher along the season, whereas leaf-Ca and Mg seasonal trends were different in bearing years as compared with non-bearing.
Jordão, P.V., Dias, J.C.S., Calouro, F. and Duarte, M.L. (1994). EFFECT OF FERTILIZATION ON THE LEAF MACRONUTRIENT CONCENTRATIONS OF OLIVE TREE. Acta Hortic. 356, 197-201
olive grove, cv.Galega, seasonal trend