sunflower

Seventy-two field trials were conducted by applying four defoliation
treatments (non defoliated control, 33%, 66%, and 100%) at different
growth stages (<code>stage</code>) ranging from pre-flowering (1) to physiological
maturity (5) in four different locations of Navarra, Spain: Carcastillo (1),
Melida (2), Murillo (3), and Unciti (4). There are two response variables:
<code>yield</code> in kg/ha of the sunflower and <code>numseed</code>, the number of
seeds per sunflower head. Data are stored in the data frame
<code>sunflower</code>. Data used in Case Study: Sunflower defoliation from
Chapter 11.

datasets

Functions and data sets for the text Probability and Statistics
with R.

Alan T Arnholt

PASWR

Probability and Statistics with R

Alan T. Arnholt

sunflower function

A data frame with 72 observations on the following 5 variables:<dl class="dl-horizontal">
<dt>location</dt><dd>a factor with levels <code>A</code>, <code>B</code>,
<code>C</code>, and <code>D</code> for locations Carcastillo, Melida, Murillo, and
Unciti respectively</dd> 
<dt>stage</dt><dd>a factor with levels <code>stage1</code>, <code>stage2</code>, <code>stage3</code>, <code>stage4</code>, and
<code>stage5</code></dd> 
<dt>defoli</dt><dd>a factor with levels <code>control</code>,
<code>treat1</code>, <code>treat2</code>, and <code>treat3</code></dd>
<dt>yield</dt><dd>sunflower yield in kg/ha</dd> 
<dt>numseed</dt><dd>number of seeds per sunflower head</dd> 
</dl>

Format

Sunflower Defoliation — sunflower

A data frame with 72 observations on the following 5 variables:<dl class='dl-horizontal'>
<dt>location</dt><dd>a factor with levels <code>A</code>, <code>B</code>,
<code>C</code>, and <code>D</code> for locations Carcastillo, Melida, Murillo, and
Unciti respectively</dd> 
<dt>stage</dt><dd>a factor with levels <code>stage1</code>, <code>stage2</code>, <code>stage3</code>, <code>stage4</code>, and
<code>stage5</code></dd> 
<dt>defoli</dt><dd>a factor with levels <code>control</code>,
<code>treat1</code>, <code>treat2</code>, and <code>treat3</code></dd>
<dt>yield</dt><dd>sunflower yield in kg/ha</dd> 
<dt>numseed</dt><dd>number of seeds per sunflower head</dd> 
</dl>

sunflower: Sunflower Defoliation

Description

Arguments

Format

References

Examples