Resource Guide for Organic Insect and Disease ... - Cornell University

In the figures below, “good control” means statistically significant reductions in either pest
numbers or damage of 75% or more, compared to an untreated control. “Fair control” includes
those with significant reductions of 50-74% and any non-significant reductions of over 50%.
The “poor control” group includes any results with less than 50% reduction.
For this fact sheet, efficacy data for individual species have been combined into groupings,
such as caterpillars, beetles, and true bugs (Hemiptera). Pesticide efficacy can vary based on
4
Plant and Petroleum Oil Products Efficacy:
Vegetable Arthropod Pests
Good Fair Poor
3
Number of Trials
2
1
0
Aphids
Beetles
True Bugs
Caterpillars
Pest Group
Mites
Thrips
Whitefly
Figure 1. Efficacy of plant and petroleum oils against arthropod pests of vegetables.
Plant and Petroleum Oil Products Efficacy: Fruit Arthropod Pests
9
Good Fair Poor
8
7
Number of Trials
6
5
4
3
2
1
0
Leafminer
Aphids
Beetles
True bugs
Flies
Caterpillars
Pest Group
Mites
Psyllid
Scale
Figure 2. Plant and petroleum oil efficacy against arthropod pests of fruit.
Organic Resource Guide 147