As it was mentioned earlier together with Jerzy Nieswadba and Robert Ślęzak we have established some important trials with mycorrhiza applied in olive orchards. It was in the spring 2012 in Croatia. One of our experiment was performed at organic olive orchard located in Istria just at Italian border. The owner of this orchard is Mrs. Jolanta Pavlovic whose origin is Polish (look at www.omajolas.com).
We have inoculated two whole rows of two cultivars of olive trees. Than we sampled fruit in October. Differences in size of fruit are visible and results of measurements have confirmed our observations.
Please note that on pictures are the same number of fruit. This difference of weight is within the range of 35% what considering the fact that from inoculation to harvesting passed just few months is very good effect.
It has to be mentioned that trees are already relatively high and they are regularly harvested. Each tree received six injections around the trunk. So rapid beneficial results of mycorrhization indicate effectiveness of our inocula and that olive trees started symbiosis with them. Results of chemical analyses show that mycorrhiza resulted in higher oil content and some modifications in this compostition.
Summing up it can be said that inoculation of olive orchard results in higher yields of better fruit quality and it final effect is 40% increase of olive yield what directly affects farmers’ income. Return of mycorrhization cost is possible in the first growing season.