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The biology of the loosestrife borer, Papaipema lysimachiae Bird (Lepidoptera: Noctuidae)Anderson, Robert Jerome, January 1967 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1967. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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The sweet potato butterfly Acraea acerata in Ethiopia : ecology and economic importance /Azerefegne, Ferdu, January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 5 uppsatser.
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Transgenic resistance to pathogens and pests /Melander, Margareta, January 2004 (has links) (PDF)
Diss. (sammanfattning) Alnarp : Sveriges lantbruksuniversitet, 2004. / Härtill 4 uppsatser.
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Sex, wine and chemical communication in grapevine moth Lobesia botrana /Tasin, Marco, January 2005 (has links) (PDF)
Diss. (sammanfattning). Alnarp : Sveriges lantbruksuniversitet, 2005. / Härtill 7 uppsatser.
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Olfactory communication in the codling moth, Cydia pomonella L. /Bäckman, Anna-Carin, January 1900 (has links) (PDF)
Diss. (sammanfattning) Alnarp : Sveriges lantbruksuniv. / Härtill 6 uppsatser.
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Interaction between greenhouse grown chrysanthemum and Frankliniella occidentalis : a modelling approach /Nothnagl, Margit, January 2006 (has links) (PDF)
Diss. (sammanfattning) Alnarp : Sveriges lantbruksuniv., 2006. / Härtill 5 uppsatser.
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Tecnologia alternativa no controle de Ceratitis capitata e sua implicação na qualidade de frutos de Spondias purpurea / Alternative technology to control Ceratitis capitata and its effect on fruit quality of Spondias purpureaOliveira, Flávia Queiroz de 31 January 2011 (has links)
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Previous issue date: 2011-01-31 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The red mombin fruit Spondias purpurea is a tropical fruit of vital importance to farmers in semi-arid region of Brazil, but it presents as a major factor limiting the occurrence of fruit flies Ceratitis capitata (Diptera: Tephritidae). Several papers have discussed the applicability of natural products such as essential oils, this pest control programs. However little is known about the effectiveness of this tactic in controlling C. capitata, as well as the impact of alternative technology in fruit quality. In this study we evaluated the effects of alternative substances as potential repellents and insecticides to C. capitata, and fruit quality of red mombin fruit. The experiments were performed at the Laboratory of Entomology UFPB Areia/PB. Three experiments were conducted: repellent activity (test I), insecticidal activity (test II) and physical and chemical quality of fruits (test III). For the all tests were used for red mombin fruit ripe fruit, water and disinfected with hypochlorite 0.1%, and dry in paper towels at room temperature. They were then treated with the following products: proagrim, essential oil of fennel and orange essential oil, both of the following concentrations, 0.0 (control), 1.0, 1.5, 2.0, 2.5 and 3.0% (w/v). For treatment of fruit products were diluted in water. While the second experiment, we used the same products and concentration of which was that the insecticidal activity via topical application of products on eggs, larvae of 1st, 2nd and 3rd instars and pupae. The results obtained in the first trial, no choice, revealed that the tested products significantly affected the fruit of red mombin fruit infestation by C. capitata. The effect of pesticides on fruit infestation reduction was dose-dependent. The average fertility of C. capitata (number of larvae per fruit) in fruit of red mombin fruit ranged from 1.65 (1%) to 1.025 (3%) when applied orange oil, 0.25 (1%) 0,075 (3%) for fennel oil and 2.1 (1%) to 0.95 (3%) when applied proagrim. The free-choice test results confirmed that no-choice, demonstrating the repellent action of the tested products. The preference index recorded was 0.5398 for orange oil; 0.3435 to 0.1717 and proagrim product for oil and fennel. In the trial of insecticide activity, it was found that, regardless of the product and the developmental stage of C. capitata mortality was directly related to increased concentrations. The median lethal concentrations (LC) of the product proagrim estimated for eggs of C. capitata was 1.6965% (w/v), which was
50higher than the average concentrations lethal (LC) estimated for larvae of 1st, 2nd and 3rd instar larvae of C. capitata, corresponding to 0.3409, 0.2277 and 0.1800% (w/v), respectively. While the estimated LC5050 of fennel oil to larvae of 1st, 2nd and 3rd instar were 0.5419, 0.5189, and 0.5464% (w/v), respectively. Low-dose response was found in all stages evaluated C. capitata after application of orange oil product. Regarding the effects of these products on fruit quality of red mombin fruit, it was found that no there is product-independent linear relationship between ° Brix and pH vs concentration vs concentration of fruit red mombin fruit. Products proagrim orange oil and promote greater weight losses of fruit pulp of red mombin fruit, from product oil of fennel. However, concentrations above 2.5% of fennel oil in fruits of red mombin fruit should be taken judiciously, in order to avoid compromising the physical quality, as well as reducing the degree Brix of fruit pulp of red mombin fruit. / A ciriguela Spondias purpurea é uma frutífera tropical de importância vital para os agricultores do semi-árido do Brasil, porém tem como um dos fatores limitantes a ocorrência de moscas-das-frutas Ceratitis capitata (Diptera: Tephritidae). Diversos trabalhos têm discutido a aplicabilidade de produtos naturais, como óleos essenciais, em programas de controle desta praga. No entanto, pouco se sabe sobre a eficiência dessa tática no controle de C. capitata, assim como o impacto dessa tecnologia alternativa na qualidade dos frutos. Nesse trabalho avaliou-se os efeitos de substâncias alternativas como potenciais produtos repelentes e inseticidas à C. capitata, e na qualidade de frutos de ciriguela. Os experimentos foram realizados no Laboratório de Entomologia da UFPB Areia. Foram executados três ensaios: I- Ensaio de atividade repelente, II- Ensaio de atividade inseticida e III- Ensaio de qualidade físico-química dos frutos. Para todos os ensaios foram utilizados frutos de ciriguela maduros, higienizados com água e hipoclorito a 0,1%, e secos sob papel absorvente em temperatura ambiente. Em seguida foram tratados com os seguintes produtos: proagrim, óleo essencial de erva-doce e óleo essencial de laranja, ambos nas seguintes concentrações, 0,0 (testemunha); 1,0; 1,5; 2,0; 2,5 e 3,0% (m/v). Para o tratamento dos frutos os produtos foram diluídos em água. Enquanto que no segundo ensaio, foram utilizados os mesmos produtos e concentrações, sendo que foi avaliada a atividade inseticida através de aplicações tópicas dos produtos em ovos, larvas de 1º, 2º e 3º instar e pupas. Os resultados obtidos no primeiro ensaio, sem chance de escolha, revelaram que os produtos testados afetaram significativamente a infestação de frutos de ciriguela por C. capitata. O efeito dos produtos na redução da infestação de frutos foi tipo dose-dependente. A fecundidade média de C. capitata (número de larvas/fruto) em frutos de ciriguela variou entre 1,65 (1%) a 1,025 (3%) quando aplicado óleo de laranja; 0,25 (1%) a 0,075 (3%) para óleo de erva-doce e de 2,1 (1%) a 0,95 (3%) quando aplicado o proagrim. O ensaio com chance de escolha confirmou os resultados daquele sem chance de escolha, demonstrando a ação repelente dos produtos testados. O índice de preferência registrado foi de 0,5398, para óleo de laranja; 0,3435 para o produto proagrim e de 0,1717 para óleo de erva-doce. No ensaio de atividade inseticida, verificou-se que, independente do produto e do estágio de desenvolvimento de C. capitata a mortalidade foi diretamente relacionada com o aumento das concentrações. A concentração média letal (CL) do produto proagrim estimada para ovos de C. capitata foi de 1,6965 % (m/v), a qual foi superior as concentrações médias letais (CL) estimadas para larvas de 1º, 2º e 3º ínstar de C. capitata, correspondendo a 0,3409, 0,2277 e 0,1800 % (m/v), respectivamente. Enquanto que as CL 50 50 estimadas do óleo de erva-doce para larvas de 1º, 2º e de 3º instar foram de 0,5419, 0,5189, e de 0,5464 % (m/v), respectivamente. Baixa dose-resposta foi encontrada em todos os estágios avaliados de C. capitata após aplicação do produto óleo de laranja. Com relação aos efeitos destes produtos na qualidade de frutos de ciriguela, constatou-se que independente do produto não existe relação linear entre °Brix vs concentração e pH vs concentração de frutos de ciriguela. Os produtos proagrim e óleo de laranja promovem maiores perdas de peso de polpa de fruto de ciriguela, em relação ao produto óleo de erva-doce. No entanto, concentrações acima de 2,5% do óleo de erva-doce em frutos de ciriguela devem ser adotadas de forma criteriosa, para que se evite o comprometimento da qualidade física, assim como a redução do grau Brix de polpas de frutos de ciriguela.
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Potential oil crops : cultivation of Barbarea verna, Barbarea vulgaris and Lepidium campestre /Börjesdotter, Desirée, January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 4 uppsatser.
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Bland granar och grannar : Ansvar och risk för granbarkborreangrepp i skog / Between Neighbours and Nature : Resposibility and Risk for Spruce Bark Beetle Infestations in ForestsHelmius, Lovisa January 2022 (has links)
This thesis discusses the responsibility of and risk for infestations of spruce bark beetle. The spruce bark beetle, Ips typographus, is a natural part of the Swedish forest ecosystem but causes severe financial damage in forestry. Since 2018, the spruce bark beetle infestations have been substantial in Sweden. The first task of the thesis is to evaluate the balance between the forest production interests and the environmental interests, based on the legal regulation of spruce bark beetle control. Production and environment are the equal aims of the Swedish Forestry Act. The regulation of spruce bark beetle control differs depending on whether the forest is in a conservation area or not. For example, owners of forests outside conservation areas are obliged to take care of damaged, fresh wood of spruce and pine, while such an obligation in general does not exist in conservation areas. In this evaluation, I conclude that the balance between the two interests in the spruce bark beetle regulation is good as a whole. The second question of the thesis is the legal allocation of risk for spruce bark beetle infestations. In this investigation, it is examined whether established law presents a possibility to claim damages for spruce bark beetle infestations that may derive from an adjacent forest. The conclusion drawn is that the regulation of compensation for certain kinds of environmental damage in the Swedish Environmental Code probably would not be applicable as a legal basis for such a claim. By contrast, neighbour law and the Swedish Torts Act could be used as the basis of an action for damages. However, to prove causality regarding the origins of a specific infestation might bring problems, which altogether means that an action for damages faces considerable difficulties. Therefore lastly, some alternative ways of allocating the risk for spruce bark beetle infestations are presented. / I denna uppsats diskuteras ansvar och risk för granbarkborreangrepp. Granbarkborren, Ips typographus, är en naturlig del av skogens ekosystem men orsakar stora ekonomiska skador i skogsbruket. Sedan 2018 har granbarkborreangreppen i Sverige varit omfattande. Uppsatsens första uppgift är att utifrån regleringen av granbarkborrebekämpning i skogen utvärdera avvägningen mellan produktions- och miljöintresset, som är skogsvårdslagens jämställda mål. Den rättsliga regleringen av bekämpning av granbarkborrar skiljer sig åt beroende på om skogen är skyddad eller oskyddad. Bland annat är ägare av oskyddad skog ålagda att ta hand om skadat, färskt barrvirke, medan en sådan skyldighet ofta saknas i skyddade områden. I utvärderingen kommer jag fram till att avvägningen mellan de två intressena över lag är god i granbarkborreregleringen. Den andra frågan i uppsatsen är fördelningen av risk för granbarkborreangrepp. För att undersöka det utreds om det enligt gällande rätt är möjligt att få skadestånd för granbarkborreangrepp som kan härstamma från närliggande skyddad eller oskyddad skog. Slutsatsen är att 32 kap. miljöbalken förmodligen inte skulle vara tillämplig, medan däremot grannelagsrätten och skadeståndslagen kan läggas till grund för en sådan talan. Att bevisa orsakssambanden kan dock innebära problem, vilket sammantaget gör att en skadeståndstalan för granbarkborreangrepp från närliggande skog möter ansenliga hinder. Sist presenteras därför några alternativa sätt att fördela risken för barkborreangrepp.
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