Conversion of yield data from experimental plot to hectrage units

Publication Type

Journal Article

Journal Name

Discovery and Innovation

Publication Date

12-1-1997

Abstract

Methods of converting yield data from experimental plot to hectrage units are proposed to enable reliable estimation of yield potentials of crop varieties. Conventional direct linear extrapolation method of conversion gives too high estimates of yield per hectare. The proposed methods take into account the variability inherent in experimental materials and cultural practices as well as different levels of management skills of farmers, and make use of Smith's index of soil heterogeneity. Two models are described for the estimation of the management index, which may further be partitioned into low, medium and high management levels. An example is given to illustrate the method and possible implications discussed.

Keywords

Experimental plot, Linear extrapolation, Management level, Smith's index of soil heterogeneity

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