| |
| Publication Type:
| Report |
|---|
| Author(s): | Baxendale, F. P.;
Steinegger, D. H. |
|---|
| Author Affiliation: | Depts. of Entomoloy and Horticulture respectively |
|---|
| Title: | Phytotoxicity of an Insecticidal Soap and Horticultural Oil on Five Species of Turfgrass |
|---|
| Source: | Insecticide and Acaricide Tests. Vol. 15, 1990, p. 335. |
|---|
| Publishing Information: | Lanham, MD: Entomological Society of America |
|---|
| Keywords: | TIC Keywords: Phytotoxicity; Zoysia; Bouteloua dactyloides; Festuca arundinacea; Agrostis; Poa pratensis
|
|---|
| Abstract/Contents: | "Safer Insecticide Concentrate and 4 rates of SunSpray Ultra -Fine Spray Oil were applied on 19 Jul to 5 X 5 ft plots of Kentucky bluegrass, zoysiagrass, buffalograss, tall fescue and bentgrass at the University of Nebraska Agricultural Research and Development Center near Mead, NB. Plot design for all trials was well below field capacity. Products were apllied with a CO2 sprayer using a LF-4 nozzle at 24 psi and delivering 3 gal finished spray/1000ft2. A total of 0.16 inches of rain fell during the post-treatment period. Phytotoxicity was evaluated 2, 7 and 14 DAT using a 1-5 injury rating scale where 1 = severe discoloration (loss of chlorophyll and darkening due to necrosis) 3 = moderate discoloration and 5 = no observable discoloration or injury. Limited foliar injury was observed on the 5 turfgrass speicies following the application of Safer Insecticide Concentrate, or SunSpray Ultra-Fine Spray Oil at the 1% or 3% rates. A slight darkening of the foliage in these treatments was reflected by mean injury ratings of 3.8-4.9 at 2 DAT. No further discoloration was observed in any of these turfgrass plots during the remainder of the 14-day post-treatment period. SunSpray Ultra-Fine Spray Oil applied at the 5% rate resulted in moderate (3.4-4.3) foliar darkening of most turfgrass species at 2 DAT. No discoloration was detected, however, by 14 DAT. The 10% rate of SunSpray Ultra-Fine Spray Oil resulted in substantial (2.6-3.4) foliar discoloration (primarily darkening) on all tested turfgrass species. Zoysiagrass was the most seriously affected with initial foliar darkening followed by gradual yellowing of leaves beginning 3-5 DAT. At 14 DAT, all turfgrass species treated with 10% SunSpray Ultra-Fine Spray Oil still showed some discoloration, but there was no evidence of permanent injury to any of the turfgrasses evaluated." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baxendale, F. P., and D. H. Steinegger. 1990. Phytotoxicity of an Insecticidal Soap and Horticultural Oil on Five Species of Turfgrass. Arthropod Manage. Tests. 15:p. 335. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=18230 |
| If there are problems with this record, send us feedback about record 18230. |
| 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) |
