Table 5. Pesticide use patterns reported by commercial potato producers.
Values are averages
over the past 3 years.
|
Pesticide |
% |
% fields receiving 1 application per year |
% fields receiving 2-3 applications per year |
% fields receiving 4 or more applications per year |
|
HERBICIDES |
98% |
72% |
25% |
2% |
|
Pre-emergence |
98% |
93% |
6% |
1% |
|
Post-emergence |
70% |
98% |
2% |
0% |
|
FUNGICIDES |
98% |
4% |
19% |
74% |
|
for early blight |
77% |
58% |
19% |
23% |
|
NEMATICIDES |
61% |
96% |
4% |
0% |
|
SOIL |
73% |
100% |
0% |
0% |
|
INSECTICIDES |
99% |
71% |
24% |
5% |
|
soil insecticides for |
68% |
97% |
0% |
3% |
|
foliar insecticides for aphids |
86% |
77% |
20% |
3% |
|
foliar insecticides for Colorado potato beetle |
65% |
83% |
16% |
1% |