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| Publication Type:
| Report |
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| Author(s): | Freeborg, R. P.;
Daniel, W. H. |
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| Author Affiliation: | Freeborg: Res. Agronomist; Daniel: Prof., Purdue Univ., Dep. of Agron., West Lafayette, IN |
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| Title: | Poa annua control - Preemergent 1975 |
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| Section: | Turf, ornamentals, aquatics, and horticultural crops
Other records with the "Turf, ornamentals, aquatics, and horticultural crops" Section
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| Meeting Info.: | Milwaukee, Wisconsin: December 9-11, 1975 |
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| Source: | Proceedings: North Central Weed Control Conference. Vol. 30, 1975, p. 173. |
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| Publishing Information: | [Urbana, Illinois: Department of Agronomy, University of Illinois] |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Preemergent herbicides were evaluated at three midwestern sites to determine toxicity to both bentgrass, Agrostis stolonifera, and bluegrass, Poa pratensis, as well as potential to control Poa annua. Experiments were initiated in St. Louis, Missouri on 27 May 1975, and in Benton Harbor, Michigan on 24 July 1975 for bentgrass tolerance and blue bluegrass in West Lafayette, Indiana on 30 August 1974. Poa annua control was observed at both sites. Herbicides tested on bentgrass included prosulfalin, butralin, and calcium arsenate. In St. Louis bentgrass stand reductions were as follows: butralin at 6 lb, 50%; prosulfalin at 4 lb, 40%; at 1.5 and 2 lb, 20%; and calcium arsenate at 4.8 and 12 lb, 20%. Poa annua control of 98% was obtained with calcium arsenate at 8 and 12 lb, butralin at 6 lb, and prosulfalin at 4 lb resulted in 80% control. All other products gave less than 80% control. At Benton Harbor, butralin at 6 lb resulted in a 60% reduction in bentgrass stand; calcium arsenate, 12 lb, a 30% reduction; and prosulfalin at 4 lb, a 20% reduction in stand. Calcium arsenate, 12 lb and prosulfalin, 4 lb resulted in 98% Poa annua control. Herbicides applied to Poa pratensis included butralin, oxidiazon, NIA-25213, prosulfalin, alachlor, benefin, DCPA, PPG-139, HE-22234, and HE-25893. Oxidiazon (2 lb/gal) resulted in foliar tip burn, but without thinning of the perennial turf. Prosulfalin was not toxic. Both oxidiazon and prosulfalin at 2 and 4 lb gave the best Poa annua control of all products tested." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Freeborg, R. P., and W. H. Daniel. 1975. Poa annua control - Preemergent 1975. Res. Rep. North Cent. Weed Control Conf. 30:p. 173. |
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