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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

22/05/2009

GRAPEVINE Phenological stage: flowers separated
Mildew:
Along this week we did not observe new symptoms of the disease in our monitoring plots. In fact, this year the level of damage caused by the pathogen has been low, and even in neglected and abandoned grapevines it is hard to find a spot. Anyway, *grapevines should be intensively monitored* given the environmental conditions occurring during these days and since in this stage inflorescences are highly sensitive to the disease.
Oidium:
Symptoms were not observed so far. *It is not necessary to treat*, but an eye must be kept on the plants, since climatic conditions occurring during these days favor the development of the pathogen (mild temperatures, locally persistent mist, and high moisture).
Moths:
During these days moths captured did not follow a constant pattern: whereas some plots registered more moths, in others the number of moths collected decreased. We did not observe any signs of larval activity. *It is not neccesary to treat.*
Mites:
So far neither mites nor symptoms were observed. *It is not necessary to treat*.
Altica:
In a previous phytosanitary warning we have reported the presence of Altica quercetorum in our monitoring plot in O Condado. In this week we have observed new symptoms and an increase in the area affected by the crisomellyd. Plants need to be inspected to check for symptoms.
APPLE TREE
Apple scab:
The treatments applied following the recommendations of the previous phytosanitary warning have restrained the evolution of the disease. Anyway, plants should be monitored since conditions *are still favorable for the development* of the pathogen and fruit development could be affected.
Oidium:
We have observed new shoots with oidium, which was favoured by the current environmental conditions. *It is necessary to treat.*
Cydia pomonella:
The captures of the codling moth in our monitoring plots did not reach the threshold of tolerance.
Aphids:
As it was recommended, the applications performed have eradicated the rosy apple aphid colonies, and prevented the occurrence of new ones. From now on, *we must choose innocuous insecticides for the beneficial organisms since Eriosoma lanigerum, the parasitoid of the wooly apple aphid, has clearly become active* and presents large populations in this year.