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PHYTOSANITARY BULLETIN PHYTOSANITARY WARNING FLIGHT CURVES ADVICE THRESHOLDS
2009 Previous Years

Aug13	Grapevine and Apple tree

Aug06	Grapevine and Apple tree

July30	Grapevine, Apple tree and Pine

July23	Grapevine, Apple tree, Oak and Pine

July16	Grapevine, Apple tree and Oak

July13	Grapevine

July09	Grapevine, Apple tree and Several crops

July02	Grapevine, Apple tree, Stone fruits and Maize

June25	Grapevine, Apple tree and Maize

June19	Grapevine, Apple tree and Chesnut tree

June12	Grapevine, Apple tree and Chesnut tree

June09	Several Crops, Grapevine and Walnut tree

June04	Grapevine and Apple tree

May29	Grapevine, Apple tree, Several crops and Forestry species

May22	Grapevine and Apple tree

May15	Grapevine, Apple tree y Cítrics

May08	Grapevine, Apple tree, Quince tree and Camellia

Apr30	Grapevine, Kiwi plant and Camellia

Apr23	Grapevine and Apple tree

Apr22	Grapevine

Apr17	Grapevine, Apple tree, Peach tree and Evonymus

Apr13	Grapevine, Various Crops, Kiwi plant, Oak and Camellia

Apr08	Grapevine and Apple tree

Mar20	Grapevine, Apple tree and Oak

Mar17	Grapevine

Mar13	Grapevine

Mar10	Pine, Apple tree, Stone Fruit Trees and Ornamentals

Jan05	Fruit Trees, Grapevine and Devices to apply Phytosanitary Products

PHYTOSANITARY WARNING

06/08/2009

VIÑA Phenological stage: Varaison (initial)
Mildew:
From 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:
We have only observed symptoms on plants of red varieties and in those that were not subjected to any treatment along the year.
Botrytis:
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:
We have recorded a low number of captures in the traps. However, the number of larval penetrations has increased.
Green mosquito and other cicadellidae:
Last 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:
Mite 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.
APPLE TREE
Scab:
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:
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:
Due 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:
In some areas new mobile stages of the mite are being observed on new shoots. However, before treating its presence must be confirmed.
Others:
In those plants being in the ripening stage, *rotten and fallen fruits must be removed,* since monilia or botrytis could develop under moist conditions.