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UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA
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Home » Services » Phytosanitary information » Phytosanitary Warning

PHYTOSANITARY WARNING

29/05/2009

GRAPEVINE Phenological stage: flower buds separated-blooming stage
Mildew:Ver Fotos

We didn't find new oily spots in plants from plots subjected to treatment, but they were observed on untreated control plants (they were also detected in a plot in which the last application was performed on 14th May). This means that there were adequate conditions to the secondary infection, thus it must be necessary to monitor plants in search for symptoms, in spite of the sunny and dry weather occurring during these days.

Oidium:Ver Fotos

Uncinula necator - Fungus micelliumSo far we haven't found any symptoms of the disease, but we must increase monitoring, since we are approaching the period in which symptoms could appear.




Moths:Ver Fotos

Lobesia botrana glomerulusAlong this week the number of males captured in the traps has remained low. Although we have found the first glomerulus, it is not necessary to treat.





Mites:Ver Fotos

Both in our monitoring plots and on samples received at the laboratory, we haven't observed either mite symptoms or populations. It is not necessary to treat, but given the environmental conditions of these days, we should monitor plants in case mites would appear.

APPLE TREE
Scab:Ver Fotos

Untreated control plants showed new symptoms of the disease. Warm conditions during the night together with dew occurrence favour disease development. It is advised to renew the treatments in case the effect of the previous treatment is about to end.


Cydia pomonella:Ver Fotos

Carpocapsa pomonella - Symptoms of larvae attack. Fruit penetrationSome monitoring plots have widely exceeded the threshold of tolerance. It is necessary to treat (unless plants are protected by a previous treatment) to avoid any damage to the fruit.




SEVERAL CROPS AND FORESTRY SPECIES
Aphids :
Aphid colony on PopulusAphid colony on cherry treeAlong this spring we are repeatedly observed several aphid colonies both on agricultural (citrics, pip and Stone fruit trees) and forestry species (black poplar, oaks, etc.).

Their symptoms are very apparent in certain cases, thus it is advised to treat with registered insecticides in case they would appear.