Introduction

654
Field Scouting in Rye
Information on typical damage, when and how to monitor, and economic thresholds for cutworms, aphids and armyworms
in rye can be found in the section on field scouting in small grain cereals (wheat, barley, oats).
Rye Insect Management Chart
Insect
Insecticide
(and insecticide group 1 )
Rate/Acre
Preharvest
interval (days)
Application
(A=aerial;
G=ground)
LD 50
(Mammalian
Toxicity) 2
Belowground and Surface Feeders
Wireworms Cruiser Vibrance Quattro (N) 325 ml/100 kg seed Seed Treatment >5,000
Cruiser 5FS (N) 17-50 ml/100 kg seed May be applied on-farm or by commercial seed treaters.
Cutworms Coragen (D) 101 ml 1 A or G >5,000
Pounce/Perm-UP (P)
Ambush (P)
73-158 ml
57-121 ml
Sap Feeders
Treat pior to
6 leaf stage
G 1030
Aphids Malathion 500 (OP) 0.60-0.80 L 7 A or G 4302
Malathion 85E (OP) 0.445-0.544 L 7 A or G 5,500
Defoliators
Grasshoppers Spreadable Bran Baits
Nolo Bait Minimum of 0.45 kg A or G
Eco bran (C) 0.8-1.6 kg 14 G N/A
Sprays
Coragen (D) 51-101 ml 1 A or G >5,000
Malathion 500 (OP) 0.69 L 7 A or G 4302
Malathion 85E (OP) 0.445-0.544 L 7 A or G 5,500
Lagon/Cygon 480EC (OP) 0.22 L (nymphs)
0.34-0.41 L (adults)
35 A or G 60-450
Armyworm Coragen (D) 101-152 ml 1 A or G >5,000
Delegate (Sp) 40-81 g 21 G >5,000
Malathion 500 (OP) 0.60-0.80 L 7 A or G 4302
Malathion 85E (OP) 0.445-0.544 L 7 A or G 5,500
ALWAYS CONSULT THE INSECTICIDE LABEL BEFORE APPLYING ANY INSECTICIDE.
1
Insecticide Group: N=neonicotinoids, P=pyrethroids, C=carbamates, OP=organophosphates.
2
LD 50
values represent the relative toxicity of a pesticide. They represent the dose (in mg/kg body weight) that will kill 50% of the
test animals. Thus the lower the number the greater the toxicity. Values given are for oral LD 50
.