Olive Tree Food
Olive trees are generally grown for their olive fruits in food industry. They can tolerate most growing conditions no matter they are acidic or alkaline soil types. They can also grow well in abnormal soil conditions like drought or compact soil areas. They are especially for those soil field where no other crops can grow well.
Olive trees do not need too much feeding for growth because their robust root system can effectively fetch nutrients and water from the deep side of the soil. Two main nutrients they needed for their growth are nitrogen and potassium. Nitrogen is the most important element for the fruit production, and incorrect feeding of nitrogen will result in poor olive production. The ideal percentage of nitrogen in the olive tree leaves is about 2%, and you should regularly take some leaf samples for checking the nitrogen level to ensure they are sufficient.
You should always avoid overfeeding your trees at all times. Actually, you do not need to fertilize a lot of times in a year. If your olive trees are planted in soil with normal PH level, they can naturally take nutrients from the soil by themselves. If the soil is poor in nitrogen, some chemical fertilizers can be applied for supplements. If you find some nitrogen deficiency symptoms such as yellow leaves, you should immediately use some fertilizers as a remedy. You should avoid applying too much fertilizers into your soil because over amount of nitrogen will cause the excessive growth of tree shoots which will lower the overall quality of the fruit production.
Image provided By Heinrich Böll Stiftung from Berlin, Deutschland (Olivenbäume im Frühling) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons