Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling
Black nightshade (Solanum nigrum L.) is a major problem in gardenpea cultivations contracted by Findus AB, a Swedish food processing company. The main problem is that the nightshade berries contain solanin and, thus, are not tolerated in the marketed product, which is fresh frozen peas. In additi...
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| Formato: | Otro |
| Lenguaje: | sueco sueco |
| Publicado: |
2006
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/12393/ |
| _version_ | 1855572055054876672 |
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| author | Palmkvist, Kristofer |
| author_browse | Palmkvist, Kristofer |
| author_facet | Palmkvist, Kristofer |
| author_sort | Palmkvist, Kristofer |
| collection | Epsilon Archive for Student Projects |
| description | Black nightshade (Solanum nigrum L.) is a major problem in gardenpea cultivations
contracted by Findus AB, a Swedish food processing company. The main problem is that the
nightshade berries contain solanin and, thus, are not tolerated in the marketed product, which
is fresh frozen peas. In addition, berries have the same size and color as the peas and cannot
be separated at the factory. Black nightshades have the last ten years become a more common
weed in field grown vegetables in the southern parts of Sweden. This MSc thesis presents an
experiment conducted in 2005, aiming at developing a tool for predicting the need for control
of black nightshade in peas. The report includes a literature review concerning characteristics,
growth and plant development of black nightshade. Also, it includes a description of the pea
cultivation strategy of Findus AB. The experimental part consisted of registration of the
development of black nightshade in relation to pea plants. The registrations were done in pea
fields contracted by Findus AB. The study of development was conducted in fields with four
pea cultivars differing in earliness. No berries of black nightshade were produced before the
harvest of the two early pea cultivars. However, nightshade plants growing in fields with late
pea cultivars were able to produce berries before harvest, indicating a need for an effective
weed control. The data from these experiments was then compiled to form graphic
presentations for each of the species. These graphs show the relationship between the
development of black nightshade and peas, and can be used to predict the risk of nightshade
plants producing berries before harvest of peas. As a result, the data from these graphs can
assist farmers and weed assistants in determining whether or not black nightshade shall be
controlled. |
| format | Otro |
| id | RepoSLU12393 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2006 |
| publishDateSort | 2006 |
| record_format | eprints |
| spelling | RepoSLU123932018-10-09T11:34:21Z https://stud.epsilon.slu.se/12393/ Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling Palmkvist, Kristofer Pests of plants Black nightshade (Solanum nigrum L.) is a major problem in gardenpea cultivations contracted by Findus AB, a Swedish food processing company. The main problem is that the nightshade berries contain solanin and, thus, are not tolerated in the marketed product, which is fresh frozen peas. In addition, berries have the same size and color as the peas and cannot be separated at the factory. Black nightshades have the last ten years become a more common weed in field grown vegetables in the southern parts of Sweden. This MSc thesis presents an experiment conducted in 2005, aiming at developing a tool for predicting the need for control of black nightshade in peas. The report includes a literature review concerning characteristics, growth and plant development of black nightshade. Also, it includes a description of the pea cultivation strategy of Findus AB. The experimental part consisted of registration of the development of black nightshade in relation to pea plants. The registrations were done in pea fields contracted by Findus AB. The study of development was conducted in fields with four pea cultivars differing in earliness. No berries of black nightshade were produced before the harvest of the two early pea cultivars. However, nightshade plants growing in fields with late pea cultivars were able to produce berries before harvest, indicating a need for an effective weed control. The data from these experiments was then compiled to form graphic presentations for each of the species. These graphs show the relationship between the development of black nightshade and peas, and can be used to predict the risk of nightshade plants producing berries before harvest of peas. As a result, the data from these graphs can assist farmers and weed assistants in determining whether or not black nightshade shall be controlled. Nattskatta (Solanum nigrum L.) utgör ett stort problem livsmedelsföretaget Findus AB ärtodlingar på grund av de giftiga bären. Bären har samma färg och storlek som konservärtorna och kan ej frånskiljas på fabriken. Nattskatta har de tio senaste åren blivit ett alltmer vanligt ogräs, främst i fältmässig köksväxtodling i södra Sverige. Denna rapport presenterar ett examensarbete som genomfördes växtsäsongen 2005. Syftet var att bestämma ett tröskelvärde för bekämpning av nattskatta, baserat på en jämförelse av nattskattans och ärtplantans utvecklingshastighet. Rapporten innehåller en litteraturstudie över nattskattans egenskaper, groning och utveckling. Den ger också en beskrivning av Findus ärtodlingsstrategi och företagets problem med nattskattan. Examensarbetets experimentella del bestod i att registrera nattskattans utveckling i förhållande till ärtplantornas och pågick under sommaren 2005. Detta utfördes hos lantbrukare som odlade konservärter på kontrakt till Findus och som var drabbade av nattskatta. Försöket omfattade fyra ärtsorter med olika tidighet och målet var att bestämma bekämpningsbehovet av nattskattan. I de två tidigaste sorterna hann nattskattan inte bilda bär innan skörd av grödan. I de två senare sorterna bildades däremot nattskattabär, vilket visar på ett bekämpningsbehov för att undvika föroreningar av ärtskörden. Resultaten från alla fält sammanställdes till diagram för varje enskild sort. I dessa diagram plottades en linje som beskrev nattskattans utveckling i förhållande till ärtplantorna, och indikerade bekämpningsbehovet. Detta sammanställdes i ett diagram där man kan utläsa om bekämpning mot nattskatta är behövlig för de olika sorterna. Detta diagram kan hjälpa ogräsassistenter och odlare att bestämma om nattskattan skall bekämpas eller ej. 2006-05-18 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/12393/1/palmkvist_k_171018.pdf Palmkvist, Kristofer, 2006. Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling. UNSPECIFIED, Uppsala. Uppsala: (NL, NJ) > Dept. of Crop Production Ecology <https://stud.epsilon.slu.se/view/divisions/OID-500.html> urn:nbn:se:slu:epsilon-s-7941 swe |
| spellingShingle | Pests of plants Palmkvist, Kristofer Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title | Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title_full | Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title_fullStr | Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title_full_unstemmed | Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title_short | Utvecklingen hos nattskatta (Solanum nigrum L.) och dess bekämpningsbehov i konservärtsodling |
| title_sort | utvecklingen hos nattskatta (solanum nigrum l.) och dess bekämpningsbehov i konservärtsodling |
| topic | Pests of plants |
| url | https://stud.epsilon.slu.se/12393/ https://stud.epsilon.slu.se/12393/ |