Plant Growth Analysis: The Use of the Richards Function as an Alternative to Polynomial Exponentials

1979 ◽  
Vol 43 (5) ◽  
pp. 623-632 ◽  
Author(s):  
JILL. C. VENUS ◽  
D. R. CAUSTON
Keyword(s):  
Plant Growth ◽  
Growth Analysis ◽  
Richards Function

scholarly journals Error estimation in plant growth analysis

2014 ◽  
Vol 65 (3-4) ◽  
pp. 207-212 ◽  
Author(s):  
Andrzej Gregorczyk
Keyword(s):  
Growth Rate ◽  
Plant Growth ◽  
Growth Analysis ◽  
Growth Curves ◽  
Logistic Function ◽  
Relative Growth ◽  
Unit Leaf ◽  
Joint Application ◽  
Richards Function ◽  
Maize Plants

The scheme is presented for calculation of errors of dry matter values which occur during approximation of data with growth curves, determined by the analytical method (logistic function) and by the numerical method (Richards function). Further formulae are shown, which describe absolute errors of growth characteristics: Growth rate (GR), Relative growth rate (RGR), Unit leaf rate (ULR) and Leaf area ratio (LAR). Calculation examples concerning the growth course of oats and maize plants are given. The critical analysis of the estimation of obtained results has been done. The purposefulness of joint application of statistical methods and error calculus in plant growth analysis has been ascertained.

Plant Growth Analysis: Allometry, Growth and Interference in Orchardgrass and Timothy

1988 ◽  
Vol 62 (1) ◽  
pp. 31-42 ◽  
Author(s):  
P. A. JOLLIFFE ◽  
G. W. EATON ◽  
M. V. POTDAR
Keyword(s):  
Plant Growth ◽  
Growth Analysis

Plant Growth Curves-the Functional Approach to Plant Growth Analysis.

Biometrics ◽  
1983 ◽  
Vol 39 (2) ◽  
pp. 537
Author(s):  
C. A. Glasbey ◽  
R. Hunt
Keyword(s):  
Plant Growth ◽  
Growth Analysis ◽  
Growth Curves ◽  
Functional Approach

scholarly journals Growth Analysis of `Daliva' Chicory Grown Under Bare Soil or Straw Mulch Conditions

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 587a-587
Author(s):  
Jomo MacDermott ◽  
D.L. Coffey
Keyword(s):  
Growth Rates ◽  
Growth Analysis ◽  
Linear Equations ◽  
Dry Weight ◽  
Bare Soil ◽  
First Year ◽  
Statistical Comparison ◽  
Crown Diameter ◽  
Richards Function ◽  
Hybrid Cultivar

Some chicory (Cichorium intybus L.) cultivars, especially early and extra-early cultivars, often bolt and flower the first year of growth, contrary to the expected behavior of biennials. The extra early hybrid cultivar `Daliva' was grown in the field under bare soil and straw mulched conditions to examine possible correlations between growth rates, leaf and root sizes and bolting. Plants, sown on 19 June, were harvested weekly from 4 July to 1 Oct.; a total of 14 harvests. Root variables of length and diameter were best described by linear equations but root dry weight was decidedly quadratic in response. Leaf number, area and dry weight and crown diameter data were fitted to the Richards function to describe their sigmoidal phases of growth. In most cases, when using the Richards function, the two treatments (mulch vs. no-mulch) required different parameters to fit a line to the observed points with r2 values >0.95. A statistical comparison between treatment parameters (as obtained from SAS PROC NLIN and SigmaPlot) will be discussed.

scholarly journals Response of plant bioregulators on growth parameters and plant growth analysis of onion (Allium cepa L.)

2020 ◽  
Vol 8 (3) ◽  
pp. 1312-1316
Author(s):  
V Sravani ◽  
SN Saravaiya ◽  
BN Patel ◽  
HN Chhatrola ◽  
Himani B Patel ◽  
...  
Keyword(s):  
Plant Growth ◽  
Allium Cepa ◽  
Growth Analysis ◽  
Growth Parameters ◽  
Allium Cepa L
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