Search Results - Wittry, D.J

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    Efficacy of grid and zone soil sampling approaches for site-specific assessment of phosphorus, potassium pH, and organic matter

    Efficacy of grid and zone soil sampling approaches for site-specific assessment of phosphorus, potassium pH, and organic matter by Mallarino, A.P, Wittry, D.J

    Published in Precision agriculture
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    Soil phosphorus, management practices, and their relationship to phosphorus delivery in the Iowa Clear Lake agricultural watershed

    Soil phosphorus, management practices, and their relationship to phosphorus delivery in the Iowa Clear Lake agricultural watershed by Klatt, J.G, Mallarino, A.P, Downing, J.A, Kopaska, J.A, Wittry, D.J

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