Column name function

 By following commands, the column of the data file can be viewed in R.

colnames(data)

## [1] "irrigation" "mulches"

## [3] "nitrogen_rates" "replication"

## [5] "Organic_matter" "water_contents"

## [7] "soil_phosphorus" "soil_potassium"

## [9] "electrical_conductivity" "PH"