De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen

E. van Roon

    Research output: Thesisinternal PhD, WU

    Abstract

    The influence was studied of split dressings of N on susceptibility to lodging, on yields of grain and straw and on seed quality of a number of seed crops: poppy (Papaver somniferum), spinach (Spinacia oleracea), radish (Raphanus sativus), caraway (Carum carvi), winter swede-like oilrape (Brassica napus var. biennis) and canary grass (Phalaris canariensis). The data on yield, lodging and quality were from field trials under normal management. The second application of N was just before flowering. Of the 6 seed crops, at least 3 (poppy, spinach, radish and sometimes caraway) increased in seed production. The other crops reacted either indifferently (caraway, winter swede-like oilrape) or always negatively (canary grass). Split dressings improved seed quality of poppy and radish. The commercial value of other crops was not affected. The effect on straw stiffness (lodging) of the crops concerned was not marked; only for poppy and to a lesser extent spinach and radish did split application provide some advantage. For poppy, spinach and radish seed N dressing could be delayed until plants were in full bloom.
    Original languageDutch
    QualificationDoctor of Philosophy
    Awarding Institution
    • Wageningen University
    Supervisors/Advisors
    • Schuffelen, A.C., Promotor, External person
    Award date27 Nov 1959
    Place of PublicationWageningen
    Publisher
    Publication statusPublished - 1959

    Keywords

    • nitrogen fertilizers
    • crop damage
    • mechanical damage
    • fire
    • byproducts
    • stems
    • fibres
    • straw

    Cite this

    van Roon, E. (1959). De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen. Wageningen: Ponsen & Looijen.
    van Roon, E.. / De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen. Wageningen : Ponsen & Looijen, 1959. 131 p.
    @phdthesis{7bfac10c6a1640f18e58d5230744a942,
    title = "De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen",
    abstract = "The influence was studied of split dressings of N on susceptibility to lodging, on yields of grain and straw and on seed quality of a number of seed crops: poppy (Papaver somniferum), spinach (Spinacia oleracea), radish (Raphanus sativus), caraway (Carum carvi), winter swede-like oilrape (Brassica napus var. biennis) and canary grass (Phalaris canariensis). The data on yield, lodging and quality were from field trials under normal management. The second application of N was just before flowering. Of the 6 seed crops, at least 3 (poppy, spinach, radish and sometimes caraway) increased in seed production. The other crops reacted either indifferently (caraway, winter swede-like oilrape) or always negatively (canary grass). Split dressings improved seed quality of poppy and radish. The commercial value of other crops was not affected. The effect on straw stiffness (lodging) of the crops concerned was not marked; only for poppy and to a lesser extent spinach and radish did split application provide some advantage. For poppy, spinach and radish seed N dressing could be delayed until plants were in full bloom.",
    keywords = "stikstofmeststoffen, oogstschade, mechanische schade, brand, bijproducten, stengels, vezels, stro, nitrogen fertilizers, crop damage, mechanical damage, fire, byproducts, stems, fibres, straw",
    author = "{van Roon}, E.",
    note = "WU thesis 268 Proefschrift Wageningen",
    year = "1959",
    language = "Dutch",
    publisher = "Ponsen & Looijen",
    school = "Wageningen University",

    }

    van Roon, E 1959, 'De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen', Doctor of Philosophy, Wageningen University, Wageningen.

    De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen. / van Roon, E.

    Wageningen : Ponsen & Looijen, 1959. 131 p.

    Research output: Thesisinternal PhD, WU

    TY - THES

    T1 - De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen

    AU - van Roon, E.

    N1 - WU thesis 268 Proefschrift Wageningen

    PY - 1959

    Y1 - 1959

    N2 - The influence was studied of split dressings of N on susceptibility to lodging, on yields of grain and straw and on seed quality of a number of seed crops: poppy (Papaver somniferum), spinach (Spinacia oleracea), radish (Raphanus sativus), caraway (Carum carvi), winter swede-like oilrape (Brassica napus var. biennis) and canary grass (Phalaris canariensis). The data on yield, lodging and quality were from field trials under normal management. The second application of N was just before flowering. Of the 6 seed crops, at least 3 (poppy, spinach, radish and sometimes caraway) increased in seed production. The other crops reacted either indifferently (caraway, winter swede-like oilrape) or always negatively (canary grass). Split dressings improved seed quality of poppy and radish. The commercial value of other crops was not affected. The effect on straw stiffness (lodging) of the crops concerned was not marked; only for poppy and to a lesser extent spinach and radish did split application provide some advantage. For poppy, spinach and radish seed N dressing could be delayed until plants were in full bloom.

    AB - The influence was studied of split dressings of N on susceptibility to lodging, on yields of grain and straw and on seed quality of a number of seed crops: poppy (Papaver somniferum), spinach (Spinacia oleracea), radish (Raphanus sativus), caraway (Carum carvi), winter swede-like oilrape (Brassica napus var. biennis) and canary grass (Phalaris canariensis). The data on yield, lodging and quality were from field trials under normal management. The second application of N was just before flowering. Of the 6 seed crops, at least 3 (poppy, spinach, radish and sometimes caraway) increased in seed production. The other crops reacted either indifferently (caraway, winter swede-like oilrape) or always negatively (canary grass). Split dressings improved seed quality of poppy and radish. The commercial value of other crops was not affected. The effect on straw stiffness (lodging) of the crops concerned was not marked; only for poppy and to a lesser extent spinach and radish did split application provide some advantage. For poppy, spinach and radish seed N dressing could be delayed until plants were in full bloom.

    KW - stikstofmeststoffen

    KW - oogstschade

    KW - mechanische schade

    KW - brand

    KW - bijproducten

    KW - stengels

    KW - vezels

    KW - stro

    KW - nitrogen fertilizers

    KW - crop damage

    KW - mechanical damage

    KW - fire

    KW - byproducts

    KW - stems

    KW - fibres

    KW - straw

    M3 - internal PhD, WU

    PB - Ponsen & Looijen

    CY - Wageningen

    ER -

    van Roon E. De toepassing van gedeelde stikstofgiften bij enkele zaadgewassen. Wageningen: Ponsen & Looijen, 1959. 131 p.