ISHS Acta Horticulturae 950: XII International Asparagus Symposium
GREENHOUSE AND FIELD HERBICIDE EVALUATION ON ASPARAGUS PLANTS |
| Authors: | L.M. Rodríguez-Salamanca, J.M. Foster , M.K. Hausbeck |
| Keywords: | Asparagus officinalis, phytotoxicity, mesotrione, sulfentrazone, F. oxysporum f. sp. asparagi |
| DOI: | 10.17660/ActaHortic.2012.950.10 |
| Abstract:
Pre- and post-emergent herbicides are used to control weeds in Michigan asparagus nurseries and production fields. Greenhouse and field experiments were conducted to test the effect of 10 herbicides on (i) growth of asparagus plants and (ii) susceptibility to crown and root rot caused by Fusarium oxysporum f. sp. asparagi. Crowns were planted in pots containing infested soil (F. oxysporum f. sp. asparagi) or non-infested soil and sprayed individually with the selected herbicides and grown in the greenhouse. Crown and fern health were evaluated three months after planting. Obvious growth effects of the herbicide treatments on asparagus growth were not commonly observed and incidence of crown and root rot was low. However, a reduction in crown weight was observed among some plants grown in herbicide-treated soil. Another experiment was conducted whereby crowns were planted in a commercial field and treated prior to emergence with one of the following herbicides: glyphosate, halosulfuron, mesotrione, norflurazon, linuron, sulfentrazone, s-metolachlor, mertibuzin, diuron, and terbacil. Weed control, asparagus fern stand and height, and overall fern health were assessed. In the field, mesotrione had a negative effect on asparagus fern health, which was also observed in the greenhouse. Current results suggest select herbicide applications can compromise fern growth, which could influence yields. | |
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