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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1982_vol36.pdf#page=298
Last checked: 07/29/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Watschke, T. L.;
Welterlen, M. S. |
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| Title: | Preemergence crabgrass control in turf |
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| Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 36, 1982, p. 298-300. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| Keywords: | TIC Keywords: Digitaria ischaemum; DCPA; 2,4-D; Benfluralin
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| Abstract/Contents: | Two tests were performed to evaluate preemergence herbicides on the control of smooth crabgrass [Digitaria ischaemum (Schreb.) Michx]. One test was initiated to assess preemergence herbicides for their effeciacy in controlling smooth crabgrass species. Acceptable control (greater than 90%) was achieved by applying the label rate of 5G and 75W formulations of DCPA, DCPA 75W at the label rate in combination with 2,4-D and 2,4-DP (1.1 + 1.1 kg a.i./ha), bensulide 4E plus devrinol 50W (6.7 + 2.2 kg a.i./ha), and pendimethalin 10G (2.8 kg a.i./ha) to Kentucky bluegrass. No significant injury occurred on Kentucky bluegrass from any of the applications. In creeping red fescue, all herbicides provided acceptable control except formulations (4E, 3.6G, 7G and 7G) and rates (8.4, 8.4, 8.4, and 11.8 kg a.i./ha, respectively) of bensulide, bensulide 3.6G (8.4 kg a.i./ha) in combination with a complete fertilizer (18-5-9), alachlor 15G (5.6 kg a.i./ha), and benefin 2.5G (2.4 kg a.i./ha). Benefin, and all formulations of DCPA significantly (10% or greater) injured creeping red fescue. The application of DCPA 75W in combination with 2,4-D and 2,4-DP injured (30%) creeping red fescue more than any of the other herbicides tested. In addition, applications of bensulide 3.6G, all bensulide plus devrinol combinations, pendimethal in 10G, and bensulide in combination with 2,4-D and 2,4-DP resulted in slight injury to creeping red fescue. Herbicidal control of smooth crabgrass was more effective when applied to creeping red fescue than when applied to Kentucky bluegrass. Visual estimates of stand density before crabgrass infestation indicated that the Kentucky bluegrass stand was thinner than the creeping red fescue stand. Consequently, the lower competitive ability of the Kentucky bluegrass may have accounted for the overall lower control rating in comparison to the creeping red fescue. A separate test was conducted to evaluate different formulations and rates of preemergence herbicides for their residual control of smooth crabgrass in a Kentucky bluegrass/ryegrass turf. Plots were originally treated in 1978; however, half of each plot was retreated at lower rates in subsequent years. The data for 1978 and 1979 appear in another volume of these proceedings (Watschke, T. L., M. S. Welterlen, and J. M. Duich), 1980. Control of smooth crabgrass in turf using reduced rates the second year. Proc. NEWSS 34: 353-356). The data for 1980 and 1981 are reported herein. In 1980 or 1981, no treatment showed control from the 1978 application. In 1980, benefin 2.5G (2.2 kg a.i./ha) and all formulations and rates of DCPA (75W, 75W, and 5G at the rate of 5.6, 7.5, and 8.4 kg a.i./ha, respectively) except DCPA 5G effectively controlled crabgrass in 1981. Control was acceptable for all other formulations and rates of DCPA, as well as benefin in 1981. In general, control was less in 1981 than in 1980. |
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| Language: | English |
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| See Also: | Other items relating to: 2, 4 - D in Turf |
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| Note: | Tables
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watschke, T. L., and M. S. Welterlen. 1982. Preemergence crabgrass control in turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 36:p. 298-300. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1982_vol36.pdf#page=298
Last checked: 07/29/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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