Search for dissertations about: "poppy"

Found 2 swedish dissertations containing the word poppy.

  2. 1. Seed dormancy and germination in an ecological context : comparative studies of annual weeds

    Author : Laila Karlsson; Per Milberg; Ken Thompson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Asteraceae; Bidens; Compositae; deadnettle; Galinsoga; germination timing; Guizotia; evolution; Labiatae; Lamiaceae; Lamium; morphophysiological dormancy; Papaveraceae; Papaver; Parthenium; physiological dormancy; poppy; summer annual; Tagetes; Verbesina; winter annual; Biology; Biologi;

    Abstract : Germination ecology studies, i.e. studies of interactions between characteristics of the seeds and environmental circumstances, provide understanding of spatial and temporal patterns of emergence of wild species, as weeds in the field. A large number of species have seed dormancy, i. READ MORE

  4. 2. Changing the risk at the margin : Smallholder farming and public policy in developing countries

    Author : Camilla Andersson; Jesper Stage; Ing-Marie Gren; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Smallholder farming; Public policy; Informal risk strategies; Microcredit; Opium eradication; Development economics; Food policy; Economics; Nationalekonomi; nationalekonomi; Economics;

    Abstract : This thesis consists of a summary and four self-contained papers. Paper [I] examines whether the implementation of a social safety net programme in Ethiopia has affected the value, risk and composition of farmers‟ crop portfolios. READ MORE