The value of a uniformity trial in field experimentation with rubber

Author:

Murray E. K. S.

Abstract

1. Sanders’ method of utilising previous crop records to correct experimental results by means of a linear regression is briefly described.2. The method is applied to yield figures from rubber trees in Sumatra, and the precision of a dummy experiment is thereby increased nearly fourfold when the “preliminary” and “experimental” years are consecutive. When the “experimental” year is three years later than the “preliminary” year, the error variance of the adjusted yields is reduced to about a half.3. It is concluded that not only has the method of correction been of value in the particular instance investigated, but that a uniformity trial utilised in this way should be of practical value in any major field experiments with rubber.

Publisher

Cambridge University Press (CUP)

Subject

Genetics,Agronomy and Crop Science,Animal Science and Zoology

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. An examination of the value of covariance in dairy cow nutrition experiments;The Journal of Agricultural Science;1935-04

2. The value of covariance in analysing field experimental data;The Journal of Agricultural Science;1934-04

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