Agriculture: Plum Pest Management Guidelines

Relative Impact of the Timing of Pesticide Applications on Natural Enemies in Plum

  DORMANT BLOOM TIME IN-SEASON
NATURAL ENEMY Oil Oil +
pyrethroid1
Oil +
OP2
Oil +
IGRs3
Oil +
Spinosad
Bt4 IGRs3 Oil Spinosad IGR3 OP2 Pyrethroid1 Spinosad Carbamate5 Oil NN6
aphid parasites (Aphidius spp.) L L L L L L L L L M L/M7 L8 H H
caterpillar parasite (Copidosoma9, Macrocentrus) L L L L L L L L M M H H M/H H H
lacewings L L M L L L L L L M M L/M L/M H M
lady beetles (Chilocorus spp.) L L L L L L L L M L H H H H
minute pirate bugs L M M L L L L L L L H H M H
predatory mites (Galendromus sp., Typhlodromus sp.) L H L L L L L L L L M H L H L
scale parasites (Aphytis sp.) L H L L L/M L L L H M H H H H H
spiders L L M L L L L L L H L H
H = high         M = moderate         L = low         — = no information
1 pyrethroid (e.g. Asana, Warrior)
2 OP = organophosphate (e.g. Diazinon, Guthion, Imidan, Lorsban, Supracide)
3 IGR = insect growth regulator (Dimilin, Intrepid, Esteem, Seize)
4 Bt = Bacillus thuringensis
5 carbamate (e.g. Sevin)
6 NN = neonicotinoids (Actara, Provado)
7 inseason use of OPs on aphid parasites: Diazinon = M, Imidan = L, Lorsban = no information
8 inseason use of pyrethroids on aphid parasites: Asana = L, Warrior = no information
9 (= Paralitomastix)
Text Updated: 04/09