Hello Sir
Olive trees are planted in distances 7 x 7m, 6 x 8m, 8 x8m or even 10 x 10 m (depending on the area).The dense olive planting, where the trees are planted densely at 5 x 6 m or 6 x6m.
Depending on soil fertility and moisture, an average application of 500-1500 g of nitrogen per tree is usually recommended for a bearing tree (1kg N= approx. 5kg ammonium sulfate, 3kg ammonium nitrate, 4kg calcium nitrate or 2kg urea). The time of nitrogen application should be related to the availability of water, either rainfall or applied through the irrigation system.
The season of nitrogen application is strongly related to the flower induction and fruit set of olive. Most of the quantity to be applied (2/3) is usually applied during the end of winter, before flower bud differentiation and before new lateral shoot growth. The rest
of the quantity is applied during the flowering period (from the pre-flowering stage till the fruit set). At that time one can apply nitrogen either directly to the soil (preflowering period) or through foliar application (mainly with urea, pre-flowering and fruit set).
The most common shape for the olive tree is the “cup-shaped” tree or “free-cup”. To form this shape the newly planted one-year old trees are cut back at a height of approximately 60-80 cm above soil level.