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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1983_vol37.pdf#page=389
Last checked: 07/29/2013
Requires: PDF Reader
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. |
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| Title: | Control of smooth crabgrass in turf using pre- and postemergence herbicides |
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| Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 37, 1983, p. 389-390. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| Keywords: | TIC Keywords: Digitaria ischaemum; MSMA; Mecoprop; 2,4-D; Dicamba
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| Abstract/Contents: | Two experiments were conducted (one pre- and one postemergence) to evaluate experimental herbicides for the control of smooth crabgrass [Digitaria ischaemum (Schreb.) Michx] in cool season turfgrasses. The preemergence test was initiated to evaluate experimental materials against commercial standards for efficacy and phytotoxicity to Kentucky bluegrass and creeping red fescue. Also, different formulations and rates of bensulide were applied on two separate dates to assess the effect of timing on efficacy. Acceptable control (greater than 85%) was achieved by applying DCPA (all formulations and rates), bensulide 7G plus devrinol 5G (6.7 + 1.1 kg a.i./ha), oxadiazon (50W and 2G at both rates), and pendimethalin (both formulations and all rates) to Kentucky bluegrass. The wettable formulaitons of oxadiazon caused significant injury at the 3.34 kg a.i./ha rate. On creeping red fescue, all herbicides provided acceptable control except both rates of oxadiazon plus Peltech 20% and all rates of UC-77892-B 5G. All formulations and rates of DCPA, oxadiazon 50W and 2G, and oxadiazon plus Peltech 20% caused thinning of creeping red fescue. The wettable formulation of oxadiazon caused the most severe injury to creeping red fescue. UC-77892-B 5G should be evaluated further at higher rates as efficacy improved in this test as the rate was increased without causing injury to desired species. Only the high rate (14 kg a.i./ha) of all bensulide formulations provided acceptable crabgrass control in Kentucky bluegrass when applied early. All bensulide formulations applied on the second date (except the 8.4 kg a.i./ha rate of the 7G) resulted in acceptable control. On creeping red fescue, only the 11.2 and 14 kg a.i./ha rates of the 12.5G provided acceptable control when applied early. The two higher rates of both granular bensulide formulations provided acceptable control when applied on the second date. Consistent, acceptable, bensulide efficacy required a minimum rate of 11.2 kg a.i./ha and application more near the time of crabgrass germination (April 29). The postemergence test was initiated to evaluate an experimental chemical (HOE-00581) and combinations of an organic arsenical (MSMA) plus broadleaf herbicides (2,4-D, dicamba, and MCPP) against the commercial standard CAMA. Single applications at the two highest rates (0.28 and 0.39 kg a.i./ha) of HOE-00581 provided excellent control of smooth crabgrass in perennial ryegrass with no phytotoxicity to the ryegrass. Split applications of the two lower rates also resulted in excellent control. All organic arsenical and broadleaf combinations required two applications for acceptable control. Lowering the MSMA rate from 3.25 to 2.18 kg a.i./ha in combination with 2,4-D, dicamba, and MCPP caused efficacy to decrease from 87 to 75%. Significant discoloration of the perennial ryegrass occurred following application of the organic arsenical-broadleaf combinations. Further research on smooth crabgrass control in other cool season turfgrasses should be conducted with HOE-00581. |
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| Language: | English |
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| References: | Unknown |
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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. 1983. Control of smooth crabgrass in turf using pre- and postemergence herbicides. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 37:p. 389-390. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1983_vol37.pdf#page=389
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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