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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Movement behaviour and resource tracking in the pine weevil Hylobius abietis /

Björklund, Niklas, January 2004 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2004. / Härtill 4 uppsatser.
102

Effects of sustainable management practices on fine-root systems in willow (Salix viminalis, S. dasyclados), grey alder (Alnus incana) and Norway spruce (Picea abies) stands /

Püttsepp, Ülle, January 2004 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2004. / Härtill 5 uppsatser.
103

Creating quality relationships in the organic producer to consumer chain : from Madagascar to Germany /

Farnworth, Cathy Rozel. January 2004 (has links) (PDF)
Diss. Uppsala : Sveriges lantbruksuniversitet, 2004.
104

Temporal changes of biomass production, soil properties and ground flora in Eucalyptus globulus plantations in the Central highlands of Ethiopia /

Zewdie, Mulugeta, January 2008 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2008. / Härtill 4 uppsatser.
105

Plantation agriculture and export growth an economic history of East Sumatra, 1863-1942 /

Thee, Kian Wie. January 1969 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. Description based on print version record. Includes bibliographical references (leaves [270]-275).
106

Op hoop van vrijheid van slavensamenleving naar Creoolse gemeenschap in Suriname, 1830-1880 /

Klinkers, Ellen, January 1900 (has links)
Thesis (doctoral)--Rijksuniversiteit te Leiden, 1997. / Cover title. Errata slip laid in. Includes bibliographical references (p. [207]-220) and index.
107

Carbon sequestration on the subtropical dunes of South Africa a comparison between native regenerating ecosystems and exotic plantations /

Ntshotsho, Phumza. January 2006 (has links)
Thesis (M. Sc.(Zoology))--University of Pretoria, 2006. / Includes summary. Includes bibliographical references. Available on the Internet via the World Wide Web.
108

Distribution and foraging by the leaf-cutting ant Atta cephalotes L. in coffee plantations with different types of management and landscape contexts and alternatives to insecticides for its control /

Varón Devia, Edgar Herney. January 1900 (has links)
Thesis (Ph. D.)--University of Idaho, 2006. / Abstract. "June 2006." Includes bibliographical references. Also available online in PDF format.
109

Haitian and Dominican sugarcane workers in Dominican bateyes : patterns and effects of prejudice, stereotypes, and discrimination /

Wilhelms, Saskia K. S. January 1994 (has links)
Texte remanié de: Th. / Bibliogr. p. 129-140.
110

Potencial de nematóides entomopatogênicos para o controle da mosca-do-mediterrâneo Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) e do gorgulho-da¬goiaba Conotrachelus psidii (Marshal) (Coleoptera: Curculionidae)

Silva, Alexandre Cândido da [UNESP] 26 February 2009 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-26Bitstream added on 2014-06-13T19:58:12Z : No. of bitstreams: 1 silva_ac_me_botfca.pdf: 1497139 bytes, checksum: 1ec5c66837f996b2bf5ed59ec09974f8 (MD5) / Fundação de Apoio à Pesquisa Agrícola (FUNDAG) / Dentre os insetos pragas mais freqüentes e limitantes à produção de frutas, incluem-se a mosca-do-mediterrâneo, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), e o gorgulho-da-goiaba, Conotrachelus psidii (Marshal) (Coleoptera: Curculionidae). As larvas desses insetos se alimentam da polpa das frutas, sendo que no final dessa fase, os insetos descem para o solo onde se enterram e atravessam a fase de pupa. O objetivo do trabalho foi avaliar a virulência de 7 nematóides dos gêneros Steinernema e Heterorhabditis contra a mosca-do-mediterrâneo, e o potencial de Heterorhabditis indica Poinar, Karunakar & David 1992 no controle desse inseto e do gorgulho-da-goiaba. Foram realizados cinco experimentos, sendo um experimento em laboratório, três em casa de vegetação e um em campo. De acordo com os resultados, a mosca-do-mediterrâneo é suscetível aos nematóides quando exposta no estágio de pré-pupa e fase de pupa com 1 dia de desenvolvimento; O nematóide H. indica IBCB n5 mostrou-se como o mais virulento contra C. capitata. No teste de campo procurando avaliar H. indica IBCB n5 contra C. capitata e contra C. psidii, todos os tratamentos diferenciaram significativamente da testemunha. O nematóide apresentou-se bem mais eficiente contra a mosca-do¬mediterrâneo, com mortalidade do inseto de 66% e 93% para as dosagens de 1 e 10 JI/cm², respectivamente, do que contra o gorgulho-da-goiaba, com mortalidade de 33% e 50%, respectivamente, tendo todos esses tratamentos diferidos significativamente da testemunha / The fruit fly, Ceratitis capitata, and the guava weevil, Conotrachelus psidii, are among the most frequent and injurious pest of fruit crops. The insects larva feed on the fruit pulp and, at the end of this phase, the insects reach the soil where they spent their pupa phase. This research aimed to evaluate the virulence of 7 strains of entomopathogenic nematodes against the fruit fly in laboratory and green house conditions, and the efficiency of Heterorhabditis indica IBCB n5 against this insect and the guava weevil on field conditions. Five trials were done, being one trial done in laboratory, 3 in green house, and one at field condition. According to the results, the fruit fly is susceptible to the nematodes when exposed at the phases of pre-pupa and one day aged pupa. H. indica IBCB n5 was the most virulent nematode against C. capitata. At the field trial aiming to evaluate the efficiency of H. indica IBCB n5 against C. capitata and C. psidii, all the treatments with the nematode differed significantly from the control. H. indica IBCB n5 showed being much more virulent to the fruit fly, with insect mortality ranging from 66% to 93% at the dosages from 1 to 10 IJ/cm2, respective than to the guava weevil, with mortality ranging from 33 to 50%, respectively

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