Sticky traps, sweep net, note pad . 1 sweep equals ONE PASS over the foliage. Record the number of aster leafhoppers in the 100 sweeps. Carrots within 4 weeks of harvest do not require treatment for aster leafhopper unless directly adjacent to younger plantings. For carrot fields with several varieties, use an AYI of 70 as the threshold.
Sweep nets work best when foliage is dry and wind speeds are low.
At least 2-3 field visits per week are suggested. This information is provided as a public service, but we cannot guarantee that the information is current or accurate. Readers should verify the information before acting on it.