caa a22 4500 606219722 CHVBK 20210128101119.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s11104-014-2223-5 doi (NATIONALLICENCE)springer-10.1007/s11104-014-2223-5 Organic amendment effects on potato productivity and quality are related to soil microbial activity [Elektronische Daten] [H. Ninh, A. Grandy, K. Wickings, S. Snapp, W. Kirk, J. Hao] Aims: Applying manure to row-crop systems can reduce inorganic fertilizer dependence and enhance soil biology and crop yields. However, it remains unclear whether low manure application rates or semi-annual application rates can provide these benefits. Our objective was to evaluate the effects of variable rates and timing of manure application on soil microbial processes and crop performance in a potato-corn cropping system. Methods: We tested the effects of five manure application rates of 0.0 (Ctrl), 1.54 (T1), 3.08 (T2), 6.16 (T3), and 12.32 (T4) Mg C ha−1 on potato productivity, severity of common scab, and soil biological processes. Results: The highest rates of manure application consistently increased crop yields but even the lowest rate (1.54Mg C ha−1) increased potato and corn yields. The severity of common scab incidence on daughter tubers was reduced by treatments T2, T3, and T4 in year one but was unaffected by any treatment in year two. Yield increases and reduced common scab severity were related to increased activities of C- and N-acquiring enzymes and microbial biomass C and N. Conclusions: Manure application rates of <2Mg C ha−1 can provide crop and soil benefits that appear to increase with multiple applications, while higher application rates provide stronger and more consistent effects on yields, and especially soil biological properties related to nutrient cycling and organic matter dynamics. Springer International Publishing Switzerland, 2014 Manure nationallicence Soil organic matter nationallicence Potato nationallicence Enzymes nationallicence Microbial biomass nationallicence Potato common scab nationallicence Ninh H. Agricultural Projects Management Board - Ministry of Agriculture and Rural Development, Hanoi, Vietnam aut Grandy A. Department of Natural Resources and the Environment, University of New Hampshire, 03824, Durham, NH, USA aut Wickings K. Department of Entomology, Cornell University, New York State Agricultural Experiment Station, 14456, Geneva, NY, USA aut Snapp S. Department of Plant, Soil and Microbial Sciences, W.K. Kellogg Biological Station, Michigan State University, 49060, Hickory Corners, MI, USA aut Kirk W. Department of Plant, Soil and Microbial Sciences, Michigan State University, 48823, East Lansing, MI, USA aut Hao J. Department of Plant, Soil and Environmental Sciences, University of Maine, 04469-5722, Orono, ME, USA aut Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 223-236 0032-079X 386:1-2<223 2015 386 11104 https://doi.org/10.1007/s11104-014-2223-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-014-2223-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ninh H. Agricultural Projects Management Board - Ministry of Agriculture and Rural Development, Hanoi, Vietnam aut NATIONALLICENCE 700 1- Grandy A. Department of Natural Resources and the Environment, University of New Hampshire, 03824, Durham, NH, USA aut NATIONALLICENCE 700 1- Wickings K. Department of Entomology, Cornell University, New York State Agricultural Experiment Station, 14456, Geneva, NY, USA aut NATIONALLICENCE 700 1- Snapp S. Department of Plant, Soil and Microbial Sciences, W.K. Kellogg Biological Station, Michigan State University, 49060, Hickory Corners, MI, USA aut NATIONALLICENCE 700 1- Kirk W. Department of Plant, Soil and Microbial Sciences, Michigan State University, 48823, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Hao J. Department of Plant, Soil and Environmental Sciences, University of Maine, 04469-5722, Orono, ME, USA aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 223-236 0032-079X 386:1-2<223 2015 386 11104