Articles
SEVEN YEARS OF OBSERVATION OF THE PRESENCE OF DIFFERENT PLANT BUG SPECIES IN THE HAZELNUT ORCHARDS OF CULTIVAR ‘TONDA GENTILE DELLE LANGHE’ IN PIEDMONT
Article number
845_85
Pages
543 – 548
Language
English
Abstract
Since the end of the last century, the technical service for assistance to hazelnut growers, united in the Associazione Produttori Corilicoli Piemonte (Asprocor), arranged a system to monitor the insect presence in hazelnut orchards by frappage. These controls were made to better address the phytosanitary treatments mainly against plant bugs.
Indeed, this kind of insect represents the major cause of internal defects in the seeds.
With the frappage, during the last seven years, the moving forms of the following species of plant bugs were sought and identified: Acanthosoma haemorrhoidale, Coreus marginatus, Dolycoris baccarum, Gonocerus acuteangulatus, Palomena prasina, Pentatoma rufipes, Pantilius tunicatus, Graphosoma italicum, Rhaphigaster nebulosa.
The frappage was performed on 80 farms, sited in 30 communes which represent 40% of local production.
All the data gave the possibility of determining, for each bug species, its frequency in relation to the year (that is to say, climatic conditions), to the different yielding district and orchard characteristics (e.g., proximity to other cultivations or to the wild).
These results should be useful, not only to deepen plant bug ethology knowledge but also to point out agronomic factors that support the presence of plant bugs in hazelnut orchards.
Indeed, this kind of insect represents the major cause of internal defects in the seeds.
With the frappage, during the last seven years, the moving forms of the following species of plant bugs were sought and identified: Acanthosoma haemorrhoidale, Coreus marginatus, Dolycoris baccarum, Gonocerus acuteangulatus, Palomena prasina, Pentatoma rufipes, Pantilius tunicatus, Graphosoma italicum, Rhaphigaster nebulosa.
The frappage was performed on 80 farms, sited in 30 communes which represent 40% of local production.
All the data gave the possibility of determining, for each bug species, its frequency in relation to the year (that is to say, climatic conditions), to the different yielding district and orchard characteristics (e.g., proximity to other cultivations or to the wild).
These results should be useful, not only to deepen plant bug ethology knowledge but also to point out agronomic factors that support the presence of plant bugs in hazelnut orchards.
Publication
Authors
C. Sonnati, F. Molinari, V. Ughini
Keywords
plant bug frequency, hazelnut orchard characteristics, ‘Tonda Gentile delle Langhe’
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