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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

09/07/2009

GRAPEVINE Phenological stage: berries pea-sized- beginning of bunch closure
Mildew:
The situation of grapevines has slightly improved as compared to previous weeks, and no new symptoms appeared in untreated control plants. However, it must be remarked that after last infections, many grapevines showed affected berries. If North winds persist, grapevine conditions will be improved, but it is necessary to *keep the maximum level of surveillance* because any change in the weather conditions will lead to the emergence of new symptoms.
Oidium:
No symptoms have been observed along this week. However, grapevine is initiating the stage "bunch closure", highly sensitive to the disease, thus monitoring should be increased.
Black-Rot:
The situation in our monitoring plot has improved, being highly favoured by the change in the environmental conditions. Control plants did not show new signs of the disease. Sheet
Moths:
Moth captures in the traps have been low. However, first signs of larval activity are observed. *Monitoring should be increased, but so far it is not necessary to treat.*
Green mosquito and other cicadellidae:
The number of captures in the traps has increased, mainly of Zygina rhamni, species with nymphs on the leaves. *The evolution of populations should be monitored.*
Mites:
Signs of mite feeding activity have been observed again in untreated control plants. Temperatures are expected to rise, which will make it necessary to *increase monitoring* since these animals develop better in warm and dry conditions.
Wood diseases:
During these days, we are beginning to observe plants with symptoms of any wood disease. We must remark that these plants should be marked to differentiate them from the other plants so as to take the appropriate measures.
APPLE TREE
Scab:
In general, we have not observed any symptoms of the disease during this week, not even in most sensitive varieties.
Cydia pomonella:
We haven't recorded any adult captures in any of the traps placed in our monitoring plots. However, environmental conditions expected for the following days favour pest development, thus we must check plants for the manifestation of signs of larval penetrations into the fruit, or treat in case a specific monitoring is not being performed.
Red spider:
We must remark that in case a previous treatment had been performed to reduce mite populations, its efficacy must be confirmed, since we have received previously treated plant samples with mite populations. In addition, expected weather conditions favour the dissemination of the pest.
SEVERAL CROPS
Aphids:
Colonies of different aphid species are being observed again in both fruit and horticultural crops. High temperatures favour the establishment and development of the insect. Thus in case they are observed, plants must be treated as soon as possible.