Green kyllinga (Kyllinga brevifolia): germination and herbicidal control
| Autor: | William T. Molin, Robert B. Barinbaum, David M. Kopec, Rehana A. Khan |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
0106 biological sciences
Imazaquin Kyllinga biology Kyllinga brevifolia Sowing 04 agricultural and veterinary sciences Plant Science biology.organism_classification 01 natural sciences 010602 entomology chemistry.chemical_compound chemistry Agronomy Germination 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Dithiopyr Weed Agronomy and Crop Science Metolachlor |
| Zdroj: | Weed Science. 45:546-550 |
| ISSN: | 1550-2759 0043-1745 |
| Popis: | Rehana A. Khan Robert B. Barinbaum David M. Kopec Department of Plant Sciences, University of Arizona, Tucson, AZ 85721 Green kyllinga is a relatively new weed species in well-irrigated turfs in the southwest US. To understand the germination requirements of green kyllinga, the effects of pl4nting depth, temperature, pH, and osmotic potential were determined. Green kyllinga emergence was sensitive to planting depth. At 21 days after planting (DAP), emergence of green kyllinga was 60% when planted at the soil surface but only 20% at 0.5 cm and less than 5% at 1 cm. Germination occurred at temperatures between 17 and 30 C but was notably better between 20 and 24 C. Germination was uniform from pH 5.5 to 9.5. Germination decreased between the water potentials -0.1 to -0.6 MPa, although germination was high at water potentials found in irrigated turf. The environmental conditions found in nonstressed turf areas in Arizona will likely support the establishment of green kyllinga. The efficacy of herbicides for the control of green kyllinga was also determined. Control of kyllinga (95% or greater) was obtained with preemergence applications of oxadiazon, dithiopyr, and metolachlor, and with postemergence applications of DSMA, halosulfuron-methyl, and imazaquin. |
| Databáze: | OpenAIRE |
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