Not all of the practices listed in the “Hazelnut Farming Calendar” are carried out every year. Some of these practices are carried out twice a year, some once a year, some once every three years, some once every 4-5 years, and some only when needed. Of these practices;
Pruning: Carried out in October, November, December and January. During this period, in addition to thinning the bushes and branches, branches that have dried out, broken, aged, become diseased, been affected by pests or stopped bearing are cut off at the base. Pruning within the branch, i.e. yield pruning, is carried out.
Shoot Pruning: This is the cutting of newly emerged and emerging shoots growing from the trunks of the branches in April and May.
Soil sample: Taken from at least 5-6 points in the orchard at depths of 0-20 and 20-40 cm.
Leaf sample: Within the 10–15 days before the hazelnuts are harvested, 80-120 leaves are taken from different parts of orchards of up to 20 decares, from the four sides of 25 bushes.
Half of the nitrogen fertilizer is applied in March and the other half in the second half of May or at the beginning of June.
Hazelnut Weevil Spraying: Carried out when 3 or more weevils are found on 10 bushes in different parts of the orchard, and when more than half of the nuts of the dominant hazelnut variety in the orchard have reached lentil size (3-4 mm).
Hazelnut Bud Moth Spraying: Spraying is carried out in late August and in September if 15 or more damaged leaves are found per 100 leaves. If spraying could not be done at this time, spraying against the second-generation larvae may be carried out in late March – early April, provided that they are monitored closely.
Hazelnut Gall Midge: In late March – early April, in orchards where infestation exceeds 50%, spraying is carried out when the majority of hazelnut shoots have 2 leaves.
Hazelnut Leaf Weevil: Carried out in heavily infested orchards.
Hazelnut Big Bud Mite: Sprayed when the shoots have 4 – 5 leaves and the new-year buds in the leaf axils are the size of a pinhead, approximately in the first half of May.
Mussel Scale: Carried out as a winter spraying in February–March, before the buds burst. A summer spraying may also be carried out in May, when 70–80% of the larvae have hatched from the eggs. Summer spraying should not be carried out unless absolutely necessary.
Shot-hole Borer Spraying: Carried out if there are 3 new galleries on 30 branches across 10 bushes.
Hazel Shoot Borer Control: Carried out in July, August and September by cutting and burning the infested shoots.
Fall Webworm (American White Moth): Carried out by cutting off and destroying the branches or branch sections infested with larval nests, or by spraying the second-generation larvae at their 2nd-3rd instars.
Since there is no successful spraying program against diseases such as bacterial blight and branch canker in hazelnuts, control of these diseases consists of removing and burning the infected branches and root suckers.