Essays about: "weed community"

Found 4 essays containing the words weed community.

  1. 1. Ogräskontroll : i odlingssystem utan glyfosat och med liten användning av herbicider och jordbearbetning

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Albin Hidén; [2020]
    Keywords : alleopati; conservation agriculture; glyfosat; glyfosatförbud; herbicid; herbicidresistens; jordbearbetning; mellangrödor; ogräs; ogräskonkurrens; ogräskontroll; reducerad jordbearbetning; växtföljd;

    Abstract : Ogräs har oftast större betydelse för en grödas avkastning än både skadeinsekter och växtsjukdomar. Ogräskontroll sker i huvudsak med användning av herbicider och jordbearbetning. En överanvändning av selektiva herbicider under lång tid har lett till att ogräspopulationer har utvecklat resistens mot dessa. READ MORE

  3. 2. Reimagining agriculture with perennial crops : a study on the diffusion of innovation and soil ecosystem services in the new perennial grain Kernza

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Robin Meijer; [2020]
    Keywords : Intermediate Wheatgrass; Kernza; Thinopyrum Intermedium; perennial grain; polyculture; wheat; annual; microbial biomass; soil microbial community structure; PLFA; NLFA; sustainability; agroecology; ecological intensification; innovation;

    Abstract : Perennial crops have been identified as a pathway to implement ecological intensification, which in extent could make agriculture more socio-economically and ecologically sustainable. This is a master thesis in Agroecology – a growing scientific discipline that aims to investigate problems in the food system using a holistic and transdisciplinary approach, incorporating and integrating both natural and social sciences to transform the food system. READ MORE

  4. 3. Effects of nitrogen quality and quantity on weed-crop competition : a greenhouse experiment with Avena sativa and Avena fatua

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Lukas Hallberg; [2019]
    Keywords : weed-crop competition; resource pool diversity; soil microbes; weed community;

    Abstract : The intensification of agricultural activities has provided unprecedented increases in crop production. In the light of this development concerns have been raised about its negative environmental impact. High-input farm management has further reduced the weed diversity and shaped weed communities to consist of a few highly competitive weed species. READ MORE

  5. 4. Permaculture design in an ecovillage : in theory and practise

    University essay from SLU/Horticulture

    Author : Tora Råberg; [2007]
    Keywords : ecosystem; permaculture; sustainability; self-sufficiency; ecovillage; biodiversity; indicator plants; conservation; perennials; design; microclimate; polyculture; policulture; agroforestry; companion planting; multilayer; intercropping; forest garden; permaculture design; zones and sectors;

    Abstract : This essay presents guidelines how to approach a local ecosystem, taking into account biological, geological, chemical and hydrological assets in order to obtain a sustainable and self-sufficient farming system conserving and increasing local biodiversity. Biodiversity is a key factor in ecosystem structure and function. READ MORE