Consejo Superior de Investigaciones Científicas
Ver esta página en español
Ver esta páxina en galego
Browse this page in english
Home » Services » Phytosanitary information » Phytosanitary Warning



VIÑA Phenological stage: Varaison (initial)
Mildew:Ver Fotos

Plasmopara vitícola - Shoot with spots on tender leavesFrom now on, it will be common to observe oily spots on terminal shoots, mainly, if along the rest of the year, favorable conditions for fungal development take place. We have already observed this feature both along the present week and in most grapevines of the surveyed areas. The risk is not as high as in other stages, since we are in the veraison stage; but plants should be monitored to avoid likely defoliations (already observed in untreated plants)..

Oidium:Ver Fotos

Oidium on bunch of red variety We have only observed symptoms on plants of red varieties and in those that were not subjected to any treatment along the year.

Botrytis: Ver Fotos

Bunch in the beginning of the veraison stage with botrytis symptoms Along this week we have observed some berries affected by botrytis (and also by sour rot). The infections are produced by a combination of warm and moist environmental conditions and the presence of wounds and cracks in the grape. Consequently, in those grapevines showing damage we must treat directly to the bunch.

Moths:Ver Fotos

We have recorded a low number of captures in the traps. However, the number of larval penetrations has increased.

Green mosquito and other cicadellidae:Ver Fotos

Cicadellids - Scaphoideus titanus femaleCiccadellids collected in chromatic trapLast week we have warned about the possibility that first adults of Scaphoideus titanus could appear. In fact, they have been observed in a plot located in O Condado, where we have captured the first adult. On the other hand, in some plots the presence of other cicadellidae such as green mosquito or Zygina rhamni has increased. Thus, it is advised to apply an insecticide to reduce their populations.

Mites:Ver Fotos

Grapevine with bronzed colour caused by mitesMite populations recorded were high, both in samples submitted to Areeiro and on leaves from grapevines growing in our monitoring plots in O Salnés. We have observed large mite populations, enough to justify the application of a treatment. However, as we have reported before, we must not treat with acaricides without confirming their presence. Even though, in case it is necessary to treat both against mites and cicadellids, we must choose active ingredients efficient against both types of pests.

Scab:Ver Fotos

We have not observed new symptoms of the disease in any of the monitoring plots, but we must be aware that the risk of infection persists until the end of the season.

Cydia pomonella:Ver Fotos

Along this week we have captured adults in the traps. This was not observed in every plot and they were always recorded in a low number.

Wooly aphid:Ver Fotos

Eriosoma lanigerum - Wooly aphid parasitedDue to the high temperatures recorded along this week, the level of parasitism by Aphelinus mali has increased, thus in case the parasitoid is active it should not be treated with insecticides.

Red spider:Ver Fotos

In some areas new mobile stages of the mite are being observed on new shoots. However, before treating its presence must be confirmed.


Monilia sp symptoms on apple tree. Note fungal growth forming concentric ringsIn those plants being in the ripening stage, rotten and fallen fruits must be removed, since monilia or botrytis could develop under moist conditions.