التفاصيل البيبلوغرافية
| العنوان: |
Preliminary Tests on the Impact of Water Quality on Insecticide Efficacy. |
| المؤلفون: |
Davis, T. A., Lorenz, G. M., Thrash, B. C., Bateman, N. R., Mann, M. G., Plummer, W. A., Felts, S. G., Floyd, C. A., Rice, C. R., Newkirk, T., Whitfield, A. Y., Murray, Z. K. |
| المصدر: |
B.R. Wells Rice Research Studies - Arkansas Agricultural Experiment Station, University of Arkansas System; Dec2023, Issue 698, p67-71, 5p |
| مصطلحات موضوعية: |
WATER quality, WATER hardness, HELICOVERPA armigera, CHLORANTRANILIPROLE, WATER testing, INSECTICIDES |
| مستخلص: |
Insecticide efficacy often varies by location and year. Many factors can influence an insecticide's efficacy, but an often-overlooked factor is water quality in a carrier solution. Multiple experiments were conducted to evaluate the impact of water hardness and pH on chlorantraniliprole efficacy for controlling corn earworms. In the first experiment, leaf dip assays were conducted to evaluate the effects of water pH on chlorantraniliprole. Serial dilutions were used to achieve the concentration of 6 ng/mL of chlorantraniliprole in 3 different water samples with a pH of 6.47, 8.31, and 9.12, respectively. Larvae were placed on 0.5-in. leaf discs after drying and observed for mortality 48 hours after application. In the next experiment, leaf dip assays were conducted similarly but with water at a hardness of 11 ppm, 178 ppm, and 430 ppm, respectively. A third experiment was conducted in the greenhouse where Prevathon® at a rate of 14 oz/ac was mixed with water with a hardness of 10.9 ppm, 178 ppm, and 430 ppm, respectively, then applied to soybean plants. Leaves were pulled from the soybean plants at 1, 7, 21, 28, and 35 days. Larvae were placed on 0.5 in. leaf discs and checked for mortality at 48 hours. In the final experiment, water samples with a hardness of 10.9 ppm, 178 ppm, and 430 ppm, respectively, were mixed with Vantacor® 1.2 oz/ac, Intrepid Edge® 5 oz/ac, Denim® 8 oz/ac, and Besiege® 7 oz/ac then sprayed on soybeans and evaluated at 4, 7, and 10 days after treatment for the control of corn earworm. The hardness leaf dips and pH leaf dips showed that as water hardness or pH increased, the % mortality decreased. In the greenhouse and field trials, there were no significant differences. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
