Sökning: "Coffea arabica"

Hittade 3 avhandlingar innehållade orden Coffea arabica.

  1. 1. The impact of forest on pest damage, pollinators and pollination services in an Ethiopian agricultural landscape

    Författare :Ulrika Samnegård; Kristoffer Hylander; Peter Hambäck; Sileshi Nemomissa; Jaboury Ghazoul; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; agroforestry; Apoidea; Coffea arabica; crop pests; Ethiopia; forest cover; landscape ecology; moist afromontane forests; pollination; species composition; tropical agriculture; Plant Ecology; växtekologi;

    Sammanfattning : The distribution of wild biodiversity in agroecosystems affect crop performance and yield in various ways. In this thesis I have studied the impact of wild biodiversity, in terms of trees and forest structures, on crop pests, pollinators and the pollination services provided in a heterogeneous landscape in southwestern Ethiopia. LÄS MER

  3. 2. Fungal disease dynamics, genetic variation and biodiversity-yield relationships : — a study along a gradient of coffee management in southwestern Ethiopia

    Författare :Beyene Zewdie Hailu; Kristoffer Hylander; Ayco J.M Tack; Jacques Avelino; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Armillaria root rot; biodiversity; biodiversity-yield trade-offs; coffee; Coffea arabica; coffee berry disease; coffee leaf rust; coffee wilt disease; coffee yield; genetic composition; genetic diversity; hyperparasite; management intensity gradient; southwestern Ethiopia; Plant Ecology; växtekologi;

    Sammanfattning : Intensification of agricultural systems is a major threat to the associated biodiversity and could also affect the dynamics of pests and pathogens. One such system that is currently under an intensification trajectory is the production of Arabica coffee. LÄS MER

  4. 3. Root-knot nematodes and coffee in Nicaragua : management systems, species identification and genetic diversity

    Författare :Isabel Cristina Herrera Sirias; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The coffee production is affected by several limiting factors such as parasitic nematodes. Plant-parasitic nematodes have a substantial economic impact on coffee production in most countries and they are regarded as one of the major limiting factors in coffee production and worldwide coffee losses have been estimated to about 15%. LÄS MER