R: Data of sweetpotato yield

sweetpotato {agricolae} | R Documentation

## Data of sweetpotato yield

### Description

The data correspond to an experiment with costanero sweetpotato made at the locality of the Tacna department, southern Peru. The effect of two viruses (Spfmv and Spcsv) was studied. The treatments were the following: CC (Spcsv) = Sweetpotato chlorotic dwarf, FF (Spfmv) = Feathery mottle, FC (Spfmv y Spcsv) = Viral complex and OO (witness) healthy plants. In each plot, 50 sweetpotato plants were sown and 12 plots were employed. Each treatment was made with 3 repetitions and at the end of the experiment the total weight in kilograms was evaluated. The virus transmission was made in the cuttings and these were sown in the field.

### Usage

    data(sweetpotato)

### Format

A data frame with 12 observations on the following 2 variables.

`virus`

  a factor with levels `cc` `fc` `ff` `oo`

`yield`

  a numeric vector

### Source

Experimental field.

### References

International Potato Center. CIP - Lima Peru

### Examples

    library(agricolae)
    data(sweetpotato)
    str(sweetpotato)

[Package agricolae version 1.2-6 Index]