A study in sampling technique: the effect of artificial fertilisers on the yield of potatoes

A - Papers appearing in refereed journals

Wishart, J. and Clapham, A. R. 1929. A study in sampling technique: the effect of artificial fertilisers on the yield of potatoes. The Journal of Agricultural Science. 19 (4), pp. 600-618. https://doi.org/10.1017/S0021859600013332

AuthorsWishart, J. and Clapham, A. R.
Abstract

(1) The desiderata of a sampling-method are outlined, and the particular case of sampling a large number of potato plots discussed.(2) An analysis is made of the yields of 54 sub-plots of the Rothamsted Potato Experiment of 1928, both as estimated by a sampling-method and as determined by large-scale lifting.(3) It is shown that most of the significant results of the experiment are obtained from the sample-yields, but that the higher standard error per plot obscures the effect of superphosphate.(4) It is concluded that at Rothamsted 102, and at Woburn 56, plants would have to be lifted to give a sampling-error as small as 4 per cent. It would then be profitable only to sample experimental plots of 1/20th acre or more in area.Finally it is a pleasure to record our indebtedness to Dr R. A. Fisher for much valuable advice and criticism: and to Mr H. J. G. Hines for assistance with the field work.

Year of Publication1929
JournalThe Journal of Agricultural Science
Journal citation19 (4), pp. 600-618
Digital Object Identifier (DOI)https://doi.org/10.1017/S0021859600013332
Open accessPublished as non-open access
Output statusPublished
ISSN0021-8596
PublisherCambridge University Press (CUP)

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