🐛 Plant Protection

Olive Pests and Diseases

Olive pests and olive tree diseases: fruit fly, moth, black scale, peacock spot, olive knot. Identification, thresholds and integrated management.

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The biggest crop losses in olives come not from disease but from a pest seen too late. The articles in this section follow the integrated pest management instruction of Türkiye's Ministry of Agriculture and Forestry.

Article Other olive pests: jasmine moth, psyllid and olive scale Three olive pests overshadowed by the fruit fly: the jasmine moth on tender shoots, the cottony psyllid, and olive scale.

Article Olive black scale and sooty mould: the H on its back The olive pest behind sooty mould: a scale with an H on its back. Losses of 60-70%; if parasitism tops 50%, do not spray.

Article Olive knot: galls, warts and a bacterium that enters through wounds The bacterial canker among olive tree diseases that enters through wounds: galls and warts. Pole harvest and pruning errors spread it.

Article Verticillium wilt: the disease that kills the tree and has no cure The olive tree disease that kills: it survives over 10 years in the soil, blocks the vessels, and has no effective chemical control.

Article The olive moth: three generations, three kinds of damage The olive pest with three generations: it winters in the leaf, eats the flowers, enters the fruit. One larva can take 30-40 buds.

Article Olive peacock spot: symptoms and a region-by-region spray calendar The commonest of olive tree diseases: concentric rings on the leaf, shedding, a shrubby tree. Yield falls 20-25%; spray timing varies by region.

Article The olive fruit fly: sting thresholds, traps and a control calendar The olive pest that costs most: losses of 15-30% if left alone. Sting threshold 1% for table varieties, 3-4% for oil.