Managing Arthropod Pests
16 | Unit 1.8
c) Inundative biocontrol: Similar to the use of chemical pesticides, this method relies on
mass releases of natural enemies to control a large population of target pests that are
causing damage close to the economic threshold. Relies on sheer numbers and periodic
and seasonal releases to suppress a given pest population.
i. Microbial biocontrol
· Bacillus thuringiensis—Bt
· naturalis
· Predatory nematodes
· Your own collections
ii. Selected beneficial insects
· Aphytis
· Encarsia
· Lacewings
· Ladybugs
· geocoris
· Praying mantids
· Predatory mites
· Trichogramma wasps
· Anaphes
- Examples of chemical control methods
a) Powders, soaps, and oils
i. Diatomaceous earth
ii. Drax
iii. Soaps
iv. Oils and neem oil
b) Botanicals
i. garlic barrier
ii. hot pepper wax
iii. neem extracts
iv. Pyrethrins
v. Rotenones
c) Minerals/naturally occurring elements
i. Sulfur
ii. copper
- Examplese of cultural control methods
a) changes in frequency or timing of irrigation
b) Pruning to increase air circulation or prevent contact with soil
c) Field sanitation between cropping
- Examples of physical control methods
a) Row covers
b) Solarization
c) vacuums
d) Traps
e) Flooding
f ) Tillage
g) Field sanitation
Students’ Lecture 1 Outline