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    Enhanced efficiency phosphorus application for corn

    Dudenhoeffer, Christopher J.
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    [PDF] public.pdf (2.053Kb)
    [PDF] research.pdf (899.7Kb)
    [PDF] short.pdf (56.26Kb)
    Date
    2012
    Format
    Thesis
    Metadata
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    Abstract
    Farmers are interested in the use of enhanced efficiency phosphorus (P) fertilizer applications or treatments. The objectives of this research are (1) to determine the effects of tillage/fertilizer placement [no-till (NT)/surface broadcast or strip-till (ST)/deep banding], monoammonium phosphate rate [0, half the recommended rate, and the recommended rate], and the presence and absence of two enhanced phosphorus efficiency products [Avail[copyright] (Specialty Fertilizer Products, Leawood, KS) and P2O5-Max[copyright] (Rosen's Inc., Fairmont, MN)] for corn conducted at Novelty and Albany, MO; and (2) to determine the effect of lime application (0 and recommended rate), P source [non-treated control and a broadcast application of diammonium phosphate or triple superphosphate], and the presence and absence Avail[copyright] or P2O5-Max[copyright] for corn conducted at Novelty and Portageville, MO. The two P enhanced efficiency products did not consistently increase corn grain yield, including apparent P recover efficiency, in interaction with several fertilization, liming, and tillage practices at the sites and environmental conditions evaluated in this research. Triple superphosphate treated with Avail[copyright] increased P uptake 8.6 kg ha-1 compared to the non-treated control at Novelty, but not at Portageville. Strip-till/deep banding increased plant populations 15,500 plants ha-1 at Novelty and 3,500 plants ha-1 at Albany compared to NT/broadcast. Yields increased 1.57 Mg ha-1 with use of ST/deep banding over NT/broadcast at Novelty. The recommended amount of lime increased grain yields 0.77 Mg ha-1 at Portageville.
    URI
    http://hdl.handle.net/10355/15251
    Degree
    M.S.
    Thesis Department
    Soil, environmental and atmospheric sciences (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • 2012 MU theses - Freely available online
    • Soil, Environmental and Atmospheric Sciences electronic theses and dissertations (MU)

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