Essays about: "Plant ecology"

Showing result 1 - 5 of 171 essays containing the words Plant ecology.

  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

  2. 2. Resistensutveckling i våtarv mot ALS-herbicider i norra Europa

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Marie Björs; [2020]
    Keywords : ALS-inhiberande herbicider; kemisk ogräsbekämpning; ogräskontroll; resistens; Stellaria media; våtarv;

    Abstract : Våtarv (Stellaria media (L.) Vill.) är ett annuellt (ettårigt) örtogräs som växer på åkermarker i större delen av världen. Ogräset har låga krav på växtplatsen och kan orsaka skördeförluster i de flesta odlingssystem. READ MORE

  3. 3. Insect pollination of faba beans, Vicia faba : the abundance and foraging behaviour of different pollinators and their effect on crop yield

    University essay from SLU/Dept. of Ecology

    Author : Ylva Johansson; [2020]
    Keywords : honeybee; Apis mellifera; bumblebees; B. pascuorum; B. hortorum; B. lucorum; B. terrestris; B. ruderatus; B. cryptarum; B. distinguendus; B. lapidarius;

    Abstract : Faba beans, Vicia faba is known as a self-pollinating crop, however significant yield increases have been found in plants visited by honeybees and bumblebees. The bees either make positive visits, entering the flower and transferring pollen between different flowers resulting in cross-pollination, or negative visits, piercing the flower to “steal” nectar or collect nectar from extrafloral nectaries. READ MORE

  4. 4. Restoration strategies in boreal forests : prescribed burning and gap cutting effects on plant diversity and community composition

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Clara Espinosa Del Alba; [2020]
    Keywords : restoration ecology; boreal forest; fire; gap cutting; biodiversity; voluntary set-asides; vascular plants; bryophytes; forest management;

    Abstract : The boreal biome is one of the largest in the world and their forests have been widely exploited for centuries. Consequently, it has suffered ecological simplification and loss of biodiversity. Under these circumstances passive conservation is no longer enough and active restoration techniques need to be tested. READ MORE

  5. 5. Bumblebee resource dynamics : a review of foraging and nesting in the agricultural landscape

    University essay from SLU/Dept. of Ecology

    Author : Anna Douhan Sundahl; [2020]
    Keywords : bumblebees; bumblebee population dynamics; bumblebee drivers; flower strips; competition with honeybees; foraging; nesting; hibernation;

    Abstract : 90 % of all plants on earth either benefits or entirely depends on pollination. There are pollinators among families of bees (Apidea), butterflies (Lepidoptera) and birds (Aves). Bees of genus Bombus spp., bumblebees, are especially important and provide pollination service for 80 % of the crops of Europe and many wild plant species. READ MORE