Essays about: "skördeförluster"

Showing result 21 - 25 of 33 essays containing the word skördeförluster.

  1. 21. Genotypic variation of Puccinia graminis infecting barberry and grasses

    University essay from SLU/Dept. of Forest Mycology and Plant Pathology

    Author : Karolina Jörgensen; [2016]
    Keywords : Puccini graminis; population biology; barberry; Berberis spp.; phylogeny; small sequence repeats;

    Abstract : Stem rust on cereals is a large problem in parts of the world, and it may reduce the yields significantly. It is caused by Puccinia graminis, a heteroecious basidiomycete with 365 known telial host grass species. Puccinia graminis reproduces asexually on the grass host. READ MORE

  3. 22. Infestation and management of the black coffee twig borer in Uganda : and the potential impact of the leguminous tree Albizia chinensis on robusta coffee

    University essay from SLU/Dept. of Ecology

    Author : Lina Wu; [2016]
    Keywords : Xylosandrus compactus; agroforestry; shade; Vi Agroforestry;

    Abstract : The Black coffee twig borer’s (BCTB) impact on the robusta coffee production in Uganda is of major importance. A recent study showed that 69% of the coffee farms are infested by the pest of the 26 districts surveyed, with an average of 40% of the coffee plants being attacked. The national yield loss is estimated to be 9% because of BCTB. READ MORE

  4. 23. Phytophthora-sjukdomar i jordgubbsodling

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

    Author : Zhanna Hjelt; [2016]
    Keywords : phytophthora; jordgubbar; rödröta; kronröta; bekämpning;

    Abstract : Det finns ett stort behov idag för att minska patogenangrepp i jordgubbsodlingar globalt. Jordgubbar, Fragaria x ananassa, har ett stort antal skadliga organismer som orsakar sjukdomar och leder till betydande skördeförluster. Patogener av släktet Phytophthora är av stort intresse. Phytophthora fragariae Hickman var. READ MORE

  5. 24. Rapsbaggen - en skadegörare i oljeväxter : litteratursammanställning av rapsbaggen som skadegörare i raps

    University essay from SLU/Dept. of Ecology

    Author : Patrik Svanström; [2015]
    Keywords : rapsbagge; ekologi; oljeväxter; skadegörare; bekämpning; skördeförluster; bekämpningströsklar; insekticidresistens;

    Abstract : Rapsbaggen är en skadegörare i odling av oljeväxter och anses av många vara en av de viktigaste skadegörarna i grödan. Den allmänna uppfattningen i Sverige är att den är en skadegörare vilken kan orsaka totala skördeförluster om ingen bekämpning sker och denna uppfattning finner även stöd hos flera forskare. READ MORE

  6. 25. Interactions between some plant-parasitic nematodes and Rhizoctonia solani in potato fields

    University essay from SLU/Dept. of Ecology

    Author : Pia Björsell; [2015]
    Keywords : Rhizoctonia solani; Pratylenchus; Trichodoridae; Globodera; synergistic interactions; disease complex; Solanum tuberosum; spatial distribution; stem canker;

    Abstract : The pathogenic fungus Rhizoctonia solani causes major economic losses for potato producers in Sweden. The producers, as well as advisors, have reported possible increases in severity of R. solani when free-living plant parasitic nematodes are present and active. READ MORE