Wireworm Insect Evaluation

2002 Nebraska Insecticide Evaluations

Researcher(s): Keith Jarvi

Location: Haskell Agricultural Laboratory, Concord, Nebraska

Evaluation: Wireworm Insecticide

Species: Melanotus sp.

	Hybrid	Novartis 58D1
	Row Spacing	30 inches
	Planting Date	10 May
	Planter	John Deere MaxEmerge®, 2 row
	Planting Depth	2 inches
	Planting Rate:
	Application Equipment	Granules at planting: Planter mounted cone-belt system, all in-furrow in front of press wheel F0570 applied with microtube in-furrow in front of press wheel at 5 gallons solution/acre, 24 psi Non- Cruiser Seed treatments were applied by the companies on N58D1 and sent to us. Cruiser treatments applied by Syngenta on N65-Y3 All Cruiser 5 FS (Syngenta) seed treatments except Trt 12 (A13641) had Maxim XL 2.7 FS applied at 3.5 g ai/100 kg
	Field Preparation
	Fertilization
	Herbicides
	Cultivation/Tillage	Disk once previous to planting
	Previous Crop	2001 corn
	Soil Type
	Soil Type
	Organic Matter
	ph
	Field History	Corn-soybean rotation multiple years
	Irrigation	None
	Plot Direction	North-South
	Plot Length	45 ft

Experimental Design and Evaluation

Randomized complete block with 4 replications, single row, no border rows between treatments

Ratings: Plant population in middle 30 ft of row

Plant populations were taken on 29 May

Comments: We infested this area in the fall of 2001 with wireworms obtained from Lee French.

A test done in the fall of 2001 did not result in any differences in stand counts. However,

wireworm traps set in the infested area in 2002 revealed that the wireworms were still present.

Application Methods:

ST = Seed Treatment

IF = In-furrow in front of press wheel at planting time

MT = Microtube at planting

Insecticide Screening Concord, NE 2002

Plant Population per 30 ft of row (29 May)

Treatment	Application Method	Rate	Plant Population
Icon 6.2 FS (fipronil)	ST	50 g ai/100 kg seed	25.50 a
Cruiser 8 (Gaucho 600 FS)	ST	Med. Seed 65 g ai/100 kg seed	24.25 ab
Cruiser 10 (Force ST 2.5 FS)	ST	Med. Seed 527 g ai/100 kg seed	23.75 ab
Cruiser 12 (A13641)	ST	Med. Seed 53.5 g ai/100 kg seed	23.75 ab
Fortress 2.5 G	IF	3.7 oz/1000ft of row	23.75 ab
Cruiser 11	ST	Med. Seed 100 g ai/100 kg seed	23.50 ab
Cruiser 9 (Prescribe 600 FS)	ST	Med. Seed 500 g ai/100 kg seed	23.50 ab
Cruiser 4	ST	Large Seed 50 g ai/100 kg seed	23.25 ab
F0570 (zeta-cypermethrin)	IF MT	1.44 oz/acre	23.25 ab
Aztec 4.67 G	IF	2.3 oz/1000 ft of row	22.50 abc
Cruiser 3	ST	Med. Seed 50 g ai/100 kg seed	22.50 abc
Cruiser 7	ST	Large Seed 12.5 g ai/100 kg seed	22.50 abc
Cruiser 6	ST	Med. Seed 12.5 g ai/100 kg seed	22.25 bc
Cruiser 5	ST	Small Seed 12.5 g ai/100 kg seed	22.00 bc
Cruiser 2	ST	Small Seed 50 g ai/100 kg seed	21.25 bc
Cruiser 1	ST	Untreated	19.50 c

Means with the same letter are not significantly different. (LSD = 3.0637; alpha = 0.05)