Soil‐Test Phosphorus and Crop Grain Yield Responses to Long‐Term Phosphorus Fertilization for Corn‐Soybean Rotations

By J. R. Dodd, A. Mallarino. 2005

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Long‐term changes in soil phosphorus status related to P budgets under maize monoculture and mineral P fertilization (2010, background): “In three sites of Iowa, Dodd & Mallarino (2005) reported a critical POl value of 15 mg ⁄kg Also, for the PM3, critical P values for maize cropped in different regions of USA were in the range 12–20 mg ⁄kg and 18 to 41 mg ⁄kg (Beegle & Oravec, 1990; Cox, 1996).”
Phosphorus legacy: overcoming the effects of past management practices to mitigate future water quality impairment. (2013, unknown): “0 Dodd and Mallarino (2005)”
Nitrogen use efficiency in a wheat–corn cropping system from 15 years of manure and fertilizer applications (2014, result): “Other studies also showed that with P fertilizer application, soil P concentration increases are greater for sites having lower initial soil test P values (Dodd and Mallarino, 2005; Anthony et al., 2012).”
High‐Yielding Corn Response to Applied Phosphorus, Potassium, and Sulfur in Nebraska (2009, background): “Dodd and Mallarino (2005), however, found the critical level for Bray-1 P for corn following soybean to be between 15 and 21 mg kg–1.”