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eugenio gervasini

@eu-genius

Agronomist, plant health, biological control, urban green, Citizen science, storyteller, open to nature wonder

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25.01.2025
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Latest posts by eugenio gervasini @eu-genius

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Lamium purpureum, aka Red dead-nettle, offers a valuable early pasture to bumblebees, such as Bombus terrestris and Bombus pascuorum, and honeybees. Be patient, let them enjoy for a while, before spading your vegetable garden. Help protect pollinators!!!

11.03.2026 18:21 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Camellia japonica "Oki-no-nami" (Ocean waves) supposed to show flowers in spring, fully in bloom in February in Lombardy. Earlier and earlier blooming along the years, due to mild winters. Is it linked to #ClimateChange?

28.02.2026 14:40 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#Urban #Trees (23): roots and trunk protections must be checked regularly, widened when tight or removed, to prevent damages to trees' collar.

18.02.2026 19:33 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#TreeClimbing is the best technique for inspecting trees' canopy and for selective pruning, reaching small branches and avoid causing damages to mature trees'.

16.02.2026 14:41 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐ŸŽApple internal browning is a physiological disorder associated with later harvested, large, and over mature fruit and with CO2 concentration in storage. The fruit appears normal from outside, without symptoms. Once opened, It reveals...

12.02.2026 15:46 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#Urban #Trees (22): access of heavy machinery for maintenance of mature or historic parks must consider soil conditions to prevent soil compaction and damages to trees' roots, favoring pathogens attacks to roots and triggering trees' decline.

22.01.2026 16:39 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Mild winter temperatures in northern Lombardy fool primeroses, blooming months erlier than what it is expected. With current climate change trend, this phenomenon affects many plants.

20.01.2026 13:58 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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People in #Gaza are still living in dire conditions.

Their homes collapsed, their tents are torn by the winter weather.

They need more food, more medicine, more shelter supplies.

Humanitarian aid is available. UNRWA and other aid organisations are still working.

Lift the aid restrictions.

04.01.2026 11:00 ๐Ÿ‘ 37 ๐Ÿ” 34 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 2
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Do not judge me only from the bend! Trees stability evaluation requires a careful assessment of many parameters, using suitable technology if necessary. The place where a potentially dangerous tree is located can constitute an aggravating factor in the risk assessment.

02.01.2026 15:51 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Il dono di Natale fuori stagione della camelia "Oki-no-nami": Onde sull'oceano. Un unico fiore, inatteso. Sereno Natale a tutti!!!

25.12.2025 11:38 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Autumn and Winter let best appreciate the beauty of #PlatanusAcerifolia, London Plane, bark. This species is well adapted to difficult living condition of urban environment, where it also contributes to our quality of life with shade and air purification.

13.11.2025 07:48 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Autumn beauty: mature Lombardy poplars and spectacular London Plane trees in Villa Mylius, Varese.

12.11.2025 14:35 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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The presence in these days of fruiting bodies of #Armillaria, #HoneyMushrooms, in your orchard or garden is not a good sign. To prevent attacks of this parasitic fungi keep your trees in good health, avoid water stagnation and heavy pruning!

05.11.2025 08:54 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#Urban #Trees (21): pruning big branches or not respecting the collar area lead to open wounds through which fungi agents of wood decay can easily enter trees. For maintaining healthy trees, prune wisely and properly, considering trees anatomy and physiology!

18.10.2025 19:25 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#Urban #Trees (20): superficial structural #roots of trees such as Norway spruce can be heavily damaged by improper use of lawnmowers tractors, favoring pathogens attack and trees decline, leading to death.

25.09.2025 19:01 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Interlaminar serpentine mines caused by the larvae of the lepidopteran #PhyllocnistisCitrella, a potted lime tree leaves in Ispra, northern Italy. Damage visible from upper and lower surface. Possible established population of the pest in the area. Pictures: courtesy Chiara Magliozzi.

10.09.2025 18:52 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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On Sept 13th ๐Ÿ“†our Eugenio Gervasini & Beatrice Melone will stage the storytelling play "Dialoghi alieni sulla Biodiversitร " at CNR event โ€œ๐’๐ญ๐จ๐ซ๐ข๐ž ๐„๐—๐“๐‘๐€-๐จ๐ซ๐๐ข๐ง๐š๐ซ๐ข๐ž ๐๐š๐ฅ ๐๐š๐ฏ๐ข๐ฅ๐žโ€ ๐ŸŒŠ in Bologna.
A journey through the canal nature, ending with a fictional debate on invasive species ๐Ÿฆ€๐Ÿฆž๐Ÿ‘‰http://bit.ly/3JNfION

09.09.2025 10:43 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Impressive death of Norway spruce trees, Picea excelsa, caused by the #BarkBeetle #IpsTypographus in Val Badia, South Tyrol. Experts consider this massive attack a legacy of the storm Vaia, which knocked down 42,500 ha of woods in northern Italy in 2018. Increasing temperatures favored the beetle.

29.08.2025 19:28 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
a green background with text and images

a green background with text and images

Ready for #ECSA2026?โ€จ
Join this panel to share results, methods, frameworks, and debates in #AgriFood Citizen Science.
๐’๐ฎ๐›๐ฆ๐ข๐ญ ๐›๐ฒ ๐Ÿ• ๐Ž๐œ๐ญ๐จ๐›๐ž๐ซ ๐Ÿ๐ŸŽ๐Ÿ๐Ÿ“:
https://nomadit.co.uk/conference/ecsa2026/p/17100โ€จ
#CallForPapers

28.08.2025 09:00 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Anthonomus bisignifer adult (Source: Pest and Diseases Image Library, Bugwood.org)

Anthonomus bisignifer adult (Source: Pest and Diseases Image Library, Bugwood.org)

Strawberry (Fragaria x ananassa Duchesne ex Rozier [chiloensis ร— virginiana]) cultivation (Source: Ko Ko Maung, Bugwood.org)

Strawberry (Fragaria x ananassa Duchesne ex Rozier [chiloensis ร— virginiana]) cultivation (Source: Ko Ko Maung, Bugwood.org)

๐Ÿ“ขNew pest survey card: #Anthonomus bisignifer & A. signatus

๐Ÿ‘‰Protect strawberries and other important crops from these pests. Strengthen your surveillance efforts with this resource.

๐ŸŒฑ #PlantHealth #PestSurveyCard #SurveillanceNetwork

28.08.2025 13:21 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

This looks like Vespa velutina, known as Asian Hornet, an i'vasive alien species of Union concern according to EU Regulation 1143/2014, a bees predator.

24.08.2025 06:01 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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#PopilliaJaponica, #JapaneseBeetle, host preference: Betula utilis var. jacquemontii, Himalayan birch, with canopy completely skeletonized in the foreground, compared to untouched Betula pendula in the background.

22.08.2025 06:00 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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L'alternariosi del pomodoro, causata dal fungo patogeno #AlternariaSolani, ha un optimum di temperatura tra i 25 e i 35 gradi con elevata umidita'. Per questo si osserva facilmente adesso negli orti familiari. Efficaci distanza tra piante, trattamenti con rame e pulizia foglie.

17.08.2025 14:44 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#HorsechestnutLeafBlotch typical internerval symptoms, caused by the fungus #GuignardiaAesculi, has been favored by last weeks heavy rain and high humidity in northern Lombardy, Italy. Damages mostly aesthetic, removal of dead leaves is useful to control future infections.

08.08.2025 19:31 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Rosure da #HeliothisArmigera, nottua del pomodoro. Le larve di questo lepidottero nottuide hanno causato gravi danni nel Canton Ticino (Svizzera) a fagioli, piselli, ceci e mais dolce coltivati in pieno campo, e pomodori, melanzane e peperoni in serra. bit.ly/46JiiPd

06.08.2025 07:25 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Yellowish apperance of #NorwaySpruce tips due the infection of the fungus #ChrysomixaRhododendri, which completes its cycle between Rhododendron and Picea abies, observed in Valle Verzasca, Switzerland, on 27.07, at about 1.500 mt a. s. l.

30.07.2025 06:23 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Parasite fungus #ExobasidiumRhododendri gall-like bodies on Rhododendron plants in Valle Verzasca, Switzerland, about 1,700 mt a.s.l., on 27.07.

28.07.2025 10:52 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Fragmented Networks: Challenges in communication and cohesion of European Biodiversity Research Infrastructures European Biodiversity Research Infrastructures (BioRIs) play a central role in addressing the complex challenges in biodiversity research, scientific collaboration across disciplines and national boun...

This study revealed important fragmentation in communication strategies within and across key European biodiversity research structures.

@naturalsciences-be.bsky.social #biodiversity @allantsouza.ecoevo.social.ap.brid.gy โ€ช

doi.org/10.3897/BDJ....

22.07.2025 06:55 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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#CamerariaOhridella, #HorseChestnutLeafMiner, #InvasiveAlienSpecies moth, once a plague, has become an entomological curiosity in Lombardy, with its typical leaf mines.

25.07.2025 18:48 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Autumn appearance of birches, which leaves have been skeletonized by the #InvasiveAlienSpecies #PopilliaJaponica #Japanese beetle in Varese province, today.

21.07.2025 16:50 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0