Journal ArticleDOI
The determination and economic analysis of relationships between plant population and yield of main crop potatoes
P. R. Sharpe,J. B. Dent +1 more
TLDR
In this paper, two experiments designed to provide data for the estimation of functional relationships, which may be used to determine economically optimum plant populations and planting patterns in Desire'e potatoes, are described.Abstract:
Two experiments designed to provide data for the estimation of functional relationships, which may be used to determine economically optimum plant populations and planting patterns in Desire'e potatoes, are described. Functional relationships between the number of main stems per acre and yield per acre were estimated from the results of experiment (i). Experiment (ii) investigated the relationship between stem number per tuber and seed tuber weight. ‘Square root’ functions estimated for seed yield and ware yield from the results of Exp. (i) were used to calculate a total Financial Returns curve. This returns curve, together with the Cobb-Douglas function estimated from the results of Exp. (ii), was used to calculate the stem numbers per acre, which would give maximum returns per acre and economically optimum returns in different cost/price situations.read more
Citations
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Book ChapterDOI
The Quantitative Relationships Between Plant Population And Crop Yield
R.W. Willey,S.B. Heath +1 more
TL;DR: This chapter examines some of the different mathematical equations proposed to describe the relationships between plant population and crop yield and discusses the extent to which they fulfill the agronomist's needs.
Journal ArticleDOI
An analysis of growth of the potato crop
E. J. Allen,R. K. Scott +1 more
TL;DR: Linear relationships between both total and tuber dry-matter yields and the amount of radiation intercepted by potato crops are demonstrated, suggesting that, in the absence of disease and drought, the essential objective in the production of this crop is to maximize radiation interception.
Book ChapterDOI
The physiology of growth and tuber yield
TL;DR: The present state of their knowledge of potato physiology is described and how their attitudes and research priorities have changed and areas where the authors appear to need further information are suggested.
Journal ArticleDOI
Plant competition and the yield-density relationship
TL;DR: In this paper, an alternative form of the classical yield density equation is proposed in which the constant which appears as the exponent attached to the density variable is easily interpretable as the rate of decay of the competitive effect.
Journal ArticleDOI
Relationships between stem number, tuber set and yield of Russet Burbank potatoes
TL;DR: It was concluded that economic yields are influenced by stem and tuber number which in turn can be manipulated by control of seed storage temperatures and planting dates.
References
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Methods Of Correlation And Regression Analysis
Mordecai Ezekiel,Karl A. Fox +1 more
TL;DR: The Manuel Reference Record was created on 2004-09-07, modified on 2016-08-08 as mentioned in this paper, and was used by Statistique et al. in their paper as mentioned in this paper.
Journal ArticleDOI
Methods of Correlation and Regression Analysis.
Journal ArticleDOI
Plant Population and Crop Yield
J. K. A. Bleasdale,J. A. Nelder +1 more
TL;DR: The relationship between yield and density in crop plants has been studied by Shinozaki and Kira as discussed by the authors, who proposed a modified version of the original equation, where the form of the curve is parabolic.
Related Papers (5)
A comparison of two methods of recording stem densities in the potato crop
E. J. Allen,D. C. E. Wurr +1 more