Effect of Nitrogen Fertilizer on Yield, Fruit Quality and Oil Content in Manzanillo Olive Trees

Abstract

A field trial was conducted to determine the effect of nitrogen fertilizer rates and dates of added on the yield, fruit quality and oil of “Manzanillo” olive trees in a private orchard at Cairo-Alexandria desert road (about 50 Km from Cairo), Egypt. The application of ammonium sulphate at the rate of 1 kg /tree in each of February, May, June and August increased significantly yield, fruit quality (weight, size, diameter and pulp/seed ratio) and oil content in fruit.