Morrow, L.A. and McCarty, M.K. (1976) Selectivity and soil persistence of certain herbicides used on perennial forage grasses. Journal of Environmental Quality, 5 (4). pp. 462-465.
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Abstract
Several herbicides were applied in the field to the cool season grass smooth brome (Bromus inermis) and to three warm season grasses, sideoats grama (Bouteloua curtipendula), switchgrass (Panicum virgatum) and indiangrass (Sorghastrum nutans) to evaluate herbicide persistence in soils supporting each of these perennial forage grasses. Herbicides were applied once and the soil was sampled to a depth of 91 cm, 4 and 16 months after application. Bioassays, with soybeans as the test crop, were conducted in the greenhouse to determine the location of the herbicides in the soil profile. Most herbicide residues 4 or 16 months after application were located in the 0- to 8-cm soil depth. Only bromacil karbutilate and terbacil at high rates depressed soybean growth in soil from the 8- to 15-cm depth. Four months after herbicide application, a slight increase in soybean growth was evident in soil from the 15- to 30-cm depth where bromacil, karbutilate, or terbacil had been applied to bromegrass. Germination of seed harvested from each grass was not affected by herbicide treatments. From summary.ADDITIONAL ABSTRACT:Atrazine, bromacil, diuron, karbutilate, simazine and terbacil were applied to stands of Bromus inermis, Bouteloua curtipendula, Panicum virgatum and Sorghastrum nutans, and the soil was sampled to a depth of 91 cm at 4 and 16 months after application. Residues were assessed by soybean bioassay. Most residues were located in the 0-8 cm layer at both dates; bromacil, karbutilate and terbacil at high rates also left residues at 8-15 cm depth
| Item Type: | Article |
|---|---|
| Author Affiliation: | University Nebraska Agricultural Experiment Station, Lincoln 68503, USA |
| Subjects: | Plant Protection > Pesticides Plant Protection > Pests |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 23 Jul 2012 09:01 |
| Last Modified: | 23 Jul 2012 09:03 |
| Official URL: | https://www.crops.org/publications/jeq/abstracts/5... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6935 |
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