Impact of supplemental poultry manure application on potato yield and soil properties on a loam soil in north-western New Brunswick

Rees, H. W., Chow, T. L., Zebarth, B., Xing, Z., Toner, P., Lavoie, J. and Daigle, J.-L. 2014. Impact of supplemental poultry manure application on potato yield and soil properties on a loam soil in north-western New Brunswick. Can. J. Soil Sci. 94: 49–65. The effect of timing of supplementary poultry manure applications on potato (Solanum tuberosum L.) yield and quality and soil properties of degraded soils in the New Brunswick potato belt were assessed. Four treatments on an 11% slope consisted of a control (11% - Ctrl) and applications of 4 Mg ha−1 of fresh broiler poultry manure applied either in late fall (11% - F), pre-planting (11% - PP) or pre-hilling (11% - PH). Similar treatments were set out on an 8% slope with exception of the pre-planting treatment. Manure applications enhanced potato plant N status as measured by petiole concentration. Over the 3-yr experiment, poultry-manured treatments averaged 13 to 17% more annual total tuber yield and 19 to 34% more annual marketable tuber yield than th...