E17. Did you use any pesticides, herbicides, or fungicides on this plot?
Categories
Value
Category
1
insecticide
2
herbicides
3
fungicides
4
1 & 2
5
1 & 3
6
2 & 3
7
all
8
did not use
Sysmiss
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.