Sevin XLR Research Articles

Field Corn, Common Stalk Borer and Hop Vine Borer Control, 1981

Abstract Two foliar insecticides, Sevin XLR and Lorsban 4E, were evaluated to control common stalk borers (SB) and hop vine boers (HVB) in fence rows before larvae could move into fields of conventional or reduced till corn. A seed treatment, Orthene 80SP, and a planting time treatment, Furadan 10G, were also evaluated to protect seedlings from damage once larvae had entered the field. Sevin XLR and Lorsban 4E were applied on Jun 2 at both Forreston (Ogle Co) and Mt Morris (Ogle Co) to fence rows when corn seedlings were beginning to sustain damage. Corn was in the 3-leaf (Forreston) and 1 leaf (Mt Morris) stage at this time. Both foliar treatments were applied with a CO2back-pack sprayer equipped with a 4-nozzle boom for broadcast application (Lorsban: 8002 flat fan nozzles, 3.7 ft/sec, 20 psi, 20 gal of water/acre; Sevin XLR: 8001 flat fan nozzles, 5.8 ft/sec, 20 psi, 7.5 gal of water/acre). The foliar application experiments consisted of a strip 5.5 ft wide (from field margin into fence row) x 600 ft long. This strip was divided into four 150 ft-long plots. The 2 foliar insecticides were then randomly assigned to 2 of three 50 ft-long subplots. The remaining subplot was left untreated as a control. Corn seedlings in the 2nd row in from the field margin were assessed for damage 8 days after treatment.

Japanese Beetle: Bioassay to Evaluate Control of Selected Adultcides on Grape, 1981

Abstract Three insecticide formulations were evaluated for field efficacy in an experimental vineyard of Delaware grapes at Wooster, OH. Rows were spaced 8 ft apart with 8 ft between vines in a row. A replicate consisted of 15 adjacent vines in a row. A single treatment was applied Jul 15. Penncap-M and Sevin 50 WP plus Target NL (Agway) were applied at 58 psi with a C0? constant pressure sprayer equipped with a TeeJet D3-25 core. These 2 compounds were applied at the rate of 50 gal water/acre. Sevin XLR was diluted with 11 parts of water and applied with the same sprayer and some tips at 38 psi at the rate of 5.5 gal water/acre. Three leaves were removed at random from the outside canopy for use in bioassay. Leaves were placed in labeled plastic bags and brought into the laboratory where they were placed in floral tubes in a 1-gal ice cream carton. Ten adult Japanese beetles, of an unknown age were placed in each carton. The carton was modified by placing a 16-mesh wire screen over the bottom and cheese cloth over the top. Each bioassay included 4 replicates. The insect holding room was maintained at 75 F with ca. 807, RH under a 16-hr photoperiod.

Bioassay Evaluation of Japanese Beetle Adulticides on Grapes, 1982

Abstract Nine insecticidal formulations were evaluated for efficacy in an experimental vineyard of Delaware grapes at Wooster, Ohio. Rows were 9 ft apart with 8 ft between vines within row. Each treatment was replicated 4 times. A replicate consisted of 2 adjacent vines in a row. Treatments were applied twice, Jul 22 and Aug 10. A C0o constant pressure sprayer equipped with a Tee Jet D3-23 core at 45 psi was used for most of the treatments. However, there was an exception; Sevin XLR was applied 1 part XLR in 11 parts of water, using a 2D - 13 core at 20 psi. On the 1st, 5th, 11th and 15th day after application, 3 grape leaves were removed at random from the outside canopy of each treatment for use in the bioassay. They were brought into the laboratory where they were placed in a floral tube filled with water inside a ventilated 1-gal container with 10 Japanese beetles. The 1 gal ice cream cartons were modified by placing 16-mesh wire screen over the bottom and cheese cloth over the top. Each bioassay included 4 replicates. The insect holding room was maintained at 75 F with ca. 75% RH under a 16-hr photoperiod.

Foliar-Applied Insecticide Treatments on Soybeans, 1982

Abstract Ninety plots were located 3 miles west of Hebron, OH. Plots measured 50 ft by 4 rows (30-in centers). Experimental design was a randomized complete block, 3 blocks each with 30 treatments. Treatments were applied on Aug 17, with a 4-row, CO2-charged bicycle sprayer. Liquid output was 50.9 ml/sec at 40 psi (29.3 gal/acre) for all compounds except Sevin XLR, applied at 9.0 ml/sec at 80 psi (2.6 gal/acre). Spray nozzles were TeeJet TX6 and TXl Brass Tip, respectively. Weather conditions at application were partly sunny, ca 80°F, humid, with a light breeze. Soybean plants were at growth stage R5. Plants were sampled with a 15-in diameter sweep net (20 sweeps/plot) on Aug 13 (pretreatment), Aug 24 (7 days post treatment), and Aug 31 (14 days post treatment). Samples were examined in the laboratory for Mexican bean beetle (MBB) adults and larvae, and Japanese beetle (JB) adults. Soybeans were examined on all sampling dates for signs of phytotoxicity. Soybeans were hand harvested on Sep 21.

Field Corn, Japanese Beetle Control, 1982

Abstract Three Imidan 50WP and 1 Sevin XLR foliar treatments were evaluated for control of Japanese beetles and reduction of silk dipping damage at the Tobacco Experiment Station, Greeneville. Field corn ‘Pioneer 3147’ was planted on Apr 19. Plots were 30 ft x 4 rows (40 in spacing) with 4 replicates in a randomized complete block design. Blocks were separated by 5-ft alleys. Corn plants averaged 60/30 row ft. Sprays were applied on Jul 3 using 2.5 gal compressed air sprayers at 30 gal/acre pressurized by portable CO2tanks. Ear rating ranged from 0 (no kernels present on ear) to 10 (ears completely filled). Beetle counts were based on the average number of live beetles on corn silks/60 plants. Yields were determined on Sep 29 when corn contained 19.05% moisture.

Multiphase Laboratory Bioassays to Select Chemicals for Field-Testing on the Western Spruce Budworm124

A multiphase bioassay of 10 insecticide formulations was conducted with last instars of Choristoneura occidentalis Freeman. Based on assessments of intrinsic toxicity (spray and feeding), residual activity, and rainfastness, the probable decreasing order of efficacy of the formulations is: BAY SIR 8514 ( N -([trifluoromethoxy) phenyl]carbamoyl)-2-chlorobenzamide), carbaryl (Sevin XLR formulation), thiodicarb, sulprofos, permethrin, carbaryl (Sevin-4-oil formulation), fenitrothion, malathion, phosmet, and phosmet with 2% rhoplex.