| |
| Publication Type:
| Report |
|---|
| Author(s): | Baxendale, F. P.;
Paustian, J. W. |
|---|
| Author Affiliation: | Dept. of Entomology, Univ. of Nebraska |
|---|
| Title: | Residual Activity of Insecticides for Sod Webworm Control, 1989 |
|---|
| Source: | Insecticide and Acaricide Tests. Vol. 15, 1990, p. 318. |
|---|
| Publishing Information: | Lanham, MD: Entomological Society of America |
|---|
| Keywords: | TIC Keywords: Poa pratensis; Crambus; Tests
|
|---|
| Geographic Terms: | Nebraska |
|---|
| Abstract/Contents: | "The test was conducted on Kentucky bluegrass plots located at the University of Nebraska Agricultural Research and Development Center near Mead, NB. Three insecticides were applied to 5 X 5 ft plots on 25 May, 8 Jun, 22 Jun, 6 Jul and 20 Jul. The predominant grass species was Kentucky bluegrass (95%). Thatch accumulation (finger compressed) ranged from 0.25 to 0.5 inches. Field conditions were as follows: soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.2-6.6; water pH, 6.7 soil moisture was generally below field capacity. Liquid formulations were applied with a CO2 sprayer using a LF-4 nozzle at 24 psi and delivering 5 gal spray/1000 ft2. The granular formulation was applied with a hand-held shaker. Immediately following insecticide applications, plots were irrigated with 0.5 inch water. In addition, the test area received 1.0 inch irrigated water/wk, 9.11 inches of rain fell between 25 May and 19 Jul, and there were 0.16 inch during the 7-d post-treatment period. On 20 Jul, two 39 oz coffee cans with the ends removed were placed in each plot and 3 late-instar sod webworm larvae were introduced into each can. An organdy fabric cover was used to contain webworms and exclude natural enemies. Residual insecticide activity was evaluated by recording the number of surviving webworm larvae on 27 Jul, 7 d after their introduction. The experiment was analyzed as a CRD with 2 replications. All 3 insecticides, when applied on the same day that webworms were introduced, provided 100% reduction. When webworms were introduced 2 wk after insecticide applications, all products continued to provide statistically significant reductions in webworm numbers, although there was some webworm survival. Insectidides applied 6 and 8 wk prior to larval introduction did not provide significant reduction in sod webworm numbers." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baxendale, F. P., and J. W. Paustian. 1990. Residual Activity of Insecticides for Sod Webworm Control, 1989. Arthropod Manage. Tests. 15:p. 318. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=18177 |
| If there are problems with this record, send us feedback about record 18177. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: SB 951 .A1 I48 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
