Insect Problems
Grasshoppers were the worst insect problem for 22% of
Northarvest survey respondents representing
24% of the dry bean acres reported, up from 15% in 1997 and 6% in 1996. Grasshoppers were
a
problem on 29% of North Dakota respondents' acres but only 10% of Minnesota respondents'
acres.
The potato leafhopper was a more common problem for Minnesota respondents, reported as a
problem
on 11% of Minnesota respondents' acres but only 1% of North Dakota respondents' acres
(Table 21).
Table 21: Worst Insect problem in 1998 in Minnesota and North Dakota
| Worst Insect Problema |
Respondents | Acres Reported b | ||
| Number | % | Number | % | |
| Minnesota | ||||
| Leaf Hopper | 9 | 15.8 | 2,687 | 10.8 |
| Grasshopper | 8 | 14.0 | 2,477 | 9.9 |
| North Dakota | ||||
| Grasshopper | 30 | 25.2 | 20,548 | 28.6 |
| Leafhopper | 1 | 0.8 | 800 | 1.1 |
| Northarvest Total | ||||
| Grasshopper | 38 | 21.6 | 23,025 | 23.8 |
| Leafhopper | 10 | 5.7 | 3,487 | 3.6 |
a
Insert problems reported on more than 1% of respondents’ acres only.