caa a22 4500 386316031 CHVBK 20180307111605.0 cr unu---uuuuu 161130s1988 xx s 000 0 eng 10.1017/S0889189300002459 doi S0889189300002459 pii (NATIONALLICENCE)cambridge-10.1017/S0889189300002459 On-farm experiment designs and implications for locating research sites [Elektronische Daten] Research plots that are large enough to accommodate regular farm machinery are thought to contain too much field variation to allow reliable interpretation of experimental results. This study was conducted to determine whether experimental error was controlled on a wide variety of agricultural field trials that used plots larger than normally used by researchers. The investigation included trials conducted on an experiment station and trials conducted on actual commercial farms. The planning and management of the experiments ranged from those completely conducted by university researchers to those completely done by farmers. The level of experimental error in all the trials was well within the limits normally accepted by researchers in agronomy. Plots ranging in length from 125 to 1200 feet and as wide as one or two passes of standard farm machinery gave experimental results that were statistically sound. Statistical requirements for randomization and replication were all met. The ability to use large plots and farmer participation enhances the testing of new technology on farms. This leads to new opportunities to test crop production factors in a systems setting under actual farm conditions. The statistical reliability of the on-farm designs analyzed in this study should increase cooperation among researchers, extension workers, and farmers in research activities. Copyright © Cambridge University Press 1988 research plot size nationallicence experimental error nationallicence actual commercial farms nationallicence randomization nationallicence replication nationallicence new technology nationallicence statistical reliability nationallicence Rzewnicki Phil E. Associate Extension Agriculturalist and graduate student in the Department of Agronomy, University of Nebraska, Lincoln, Nebraska, 68583 Thompson Richard A farmer and consultant, Boone, Iowa, 50036 Lesoing Gary W. Administrative Assistant of University of Nebraska Agricultural Research and Development Center and graduate student in the Department of Agronomy, University of Nebraska Elmore Roger W. Associate Professor of Agronomy (Clay Center) Francis Charles A. Professors of Agronomy and all are Extension Crops Specialists, University of Nebraska Parkhurst Anne M. Professor of Biometry, Biometrics Center, University of Nebraska, Lincoln. Moomaw Russell S. Professors of Agronomy and all are Extension Crops Specialists, University of Nebraska American Journal of Alternative Agriculture Cambridge University Press 3/4(1988), 168-173 0889-1893 3:4<168 1988 3 AJA https://doi.org/10.1017/S0889189300002459 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0889189300002459 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rzewnicki Phil E. Associate Extension Agriculturalist and graduate student in the Department of Agronomy, University of Nebraska, Lincoln, Nebraska, 68583 NATIONALLICENCE 700 1- Thompson Richard A farmer and consultant, Boone, Iowa, 50036 NATIONALLICENCE 700 1- Lesoing Gary W. Administrative Assistant of University of Nebraska Agricultural Research and Development Center and graduate student in the Department of Agronomy, University of Nebraska NATIONALLICENCE 700 1- Elmore Roger W. Associate Professor of Agronomy (Clay Center) NATIONALLICENCE 700 1- Francis Charles A. Professors of Agronomy and all are Extension Crops Specialists, University of Nebraska NATIONALLICENCE 700 1- Parkhurst Anne M. Professor of Biometry, Biometrics Center, University of Nebraska, Lincoln NATIONALLICENCE 700 1- Moomaw Russell S. Professors of Agronomy and all are Extension Crops Specialists, University of Nebraska NATIONALLICENCE 773 0- American Journal of Alternative Agriculture Cambridge University Press 3/4(1988), 168-173 0889-1893 3:4<168 1988 3 AJA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge