Seasonal occurrence of Lygus bugs on field crops in Finland
A long term survey of Lygus populations (Heteroptera, Miridae) was carried out on eight arable crops in southern Finland. Sweep net samples were taken weekly during the growing season in 16 successive years. The hibernated adults first appeared in May on overwintered crops: winter rye, red clover-ti...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
1997-12-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/72804 |
| _version_ | 1831519648264224768 |
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| author | Anna-Liisa Varis |
| author_facet | Anna-Liisa Varis |
| author_sort | Anna-Liisa Varis |
| collection | DOAJ |
| description | A long term survey of Lygus populations (Heteroptera, Miridae) was carried out on eight arable crops in southern Finland. Sweep net samples were taken weekly during the growing season in 16 successive years. The hibernated adults first appeared in May on overwintered crops: winter rye, red clover-timothy ley and winter turnip rape. Turnip rape and ley harbored the most Lygus adults until the end of June even if some of them started to move to spring cereals (wheat, oats and barley), potato and sugarbeet after the emergence of these plants. The numbers of adults on cereals remained small until the crops reached the heading stage. The peak occurred in the first half of August. The adult numbers on potato and sugarbeet were also highest in August. The total number of adults was highest on wheat. Nymphs were found on all the studied crops. They were first captured in the second half of June and reached a peak between mid-July and mid-August. Numbers were highest on wheat. The most common species on all crops was L. rugulipennis Poppius, constituting 92% of the adults. The other Lygus species were L. gemellatus (Herrich-Schaeffer), L. pratensis (L.) and L. punctatus (Zetterstedt). A few specimens of L. wagneri Remane were also found. |
| first_indexed | 2024-12-13T17:18:12Z |
| format | Article |
| id | doaj.art-8e5bd6d3845a4e63bba73661ebc5fb26 |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-12-13T17:18:12Z |
| publishDate | 1997-12-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-8e5bd6d3845a4e63bba73661ebc5fb262022-12-21T23:37:22ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951997-12-0165-6Seasonal occurrence of Lygus bugs on field crops in FinlandAnna-Liisa Varis0Department of Applied Zoology, PO Box 27, FIN-00014 University of Helsinki, FinlandA long term survey of Lygus populations (Heteroptera, Miridae) was carried out on eight arable crops in southern Finland. Sweep net samples were taken weekly during the growing season in 16 successive years. The hibernated adults first appeared in May on overwintered crops: winter rye, red clover-timothy ley and winter turnip rape. Turnip rape and ley harbored the most Lygus adults until the end of June even if some of them started to move to spring cereals (wheat, oats and barley), potato and sugarbeet after the emergence of these plants. The numbers of adults on cereals remained small until the crops reached the heading stage. The peak occurred in the first half of August. The adult numbers on potato and sugarbeet were also highest in August. The total number of adults was highest on wheat. Nymphs were found on all the studied crops. They were first captured in the second half of June and reached a peak between mid-July and mid-August. Numbers were highest on wheat. The most common species on all crops was L. rugulipennis Poppius, constituting 92% of the adults. The other Lygus species were L. gemellatus (Herrich-Schaeffer), L. pratensis (L.) and L. punctatus (Zetterstedt). A few specimens of L. wagneri Remane were also found.https://journal.fi/afs/article/view/72804 |
| spellingShingle | Anna-Liisa Varis Seasonal occurrence of Lygus bugs on field crops in Finland Agricultural and Food Science |
| title | Seasonal occurrence of Lygus bugs on field crops in Finland |
| title_full | Seasonal occurrence of Lygus bugs on field crops in Finland |
| title_fullStr | Seasonal occurrence of Lygus bugs on field crops in Finland |
| title_full_unstemmed | Seasonal occurrence of Lygus bugs on field crops in Finland |
| title_short | Seasonal occurrence of Lygus bugs on field crops in Finland |
| title_sort | seasonal occurrence of lygus bugs on field crops in finland |
| url | https://journal.fi/afs/article/view/72804 |
| work_keys_str_mv | AT annaliisavaris seasonaloccurrenceoflygusbugsonfieldcropsinfinland |