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

Data and functions for the book PROBABILITY and STATISTICS
WITH R.

Alan T Arnholt

PASWR

PROBABILITY and STATISTICS WITH R

sunflower function

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

sunflower: Sunflower Defoliation

Description

Usage

Arguments

Format

References

Examples