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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Brede, A. D.;
Kenna, M. P.;
Dunfield, T. J. |
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| Author Affiliation: | Oklahoma State University |
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| Title: | Preemergence Control of Goosegrass in Perennial Ryegrass. |
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| Source: | Southern Weed Science Society Proceedings. Vol. 40, January 1987, p. 118. |
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| Publishing Information: | Nashville, TN: Southern Weed Science Society. |
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| Keywords: | TIC Keywords: Preemergence herbicides; Control; Eleusine indica; Lolium perenne; Oxadiazon; Pendimethalin; Bensulide; Prodiamine
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| Abstract/Contents: | "Two field studies were conducted at the Oklahoma Turfgrass Research Center to evaluate preemergence control of goosegrass (Eleusine indica L.) in 'Pennfine' perennial ryegrass (Lolium perenne L.) during 1985 and 1986. Treatments were applied April 25, 1985, and April 21, 1986 to 4 by 6 ft. plots arranged in a randomized complete block design with four replications. Treatments in 1985 included: two numbered compounds MF-737 (7E at 0.5, 1.0, and 1.5 lb. ai./A), and Sn-594 (7E at 6.0 lb. ai./A); two formulations of oxadiazon (2G at 3.0 lb. ai./A, and 50WP at 1.5 and 3.0 lb. ai./A); pendimethalin (1.7G at 3.0 lb. ai./A); and oxadiazon/bensulide combination (3.0 and 6.0 lb. ai./A, respectively). Treatments in 1986 included: Two formulations of oxadiazon (2G at 3.0 lb. ai./A, and 50WP at 1.0, 1.5, 2.0, and 3.0 lb. ai./A); two formulations of pendimethalin (1.7G at 3.0 lb. ai./A, and 60WDG at 2.7, 3.0, and 3.3 lb.ai./A); and prodiamine (65WDG at 1.0 and 2.0 lb. ai./A). The experimental area was maintained as a putting greem apron at a mowing height of one inch, and received adequate water and fertilizer. Plots were evaluated during both years for phytotoxicity (scale of 1 to 9, where 1 = no damage) two weeks after herbicides were applied. Goosegrass density (scale 1 to 9, where 1 = no goosegrass) was evaluated in August of both years. In 1985, the wettable powder formualtion of oxadiazon at 3.0 lb. ai./A browned perennial ryegrass, but the turf recovered completely two weeks following the phytotoxicity rating. Less significant damage occurred for oxadiazon 50WP at 1.5 lb. ai./A and 2G at 3.0 lb. ai./A. however, goosegrass control was not significnt for the low rate of oxadiazon 50WP. The oxadiazon/bensulide combination provided adequate goosegrass control, and was not phytotoxic. The remaining treatments applied in 1985 exhibited poor goosegrass control, but were not phytotoxic to perennial ryegrass with the single exception, SN-594. All formualtion and rate combinations of oxadiazon, pendimethalin, and prodiamine exhibited significant control of goosegrass compared to the untreated check in 1986. However, significant perennial ryegrass discoloration occurred for oxadiazon 50WP at 2.0 and 3.0 lb. ai./A. Oxadiazon (50WP at 1.5 lb. ai./A) and pendimethalin (1.7G at 3.0 lb. ai./A and 60 WDG at 3.3 lb. ai./A) were slightly toxic to perennial ryegrass. Prodiamine 65WDG at 1.0 and 2.0 lb. ai./A controlled goosegrass with no significant damage to perennial ryegrass." |
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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):
Brede, A. D., M. P. Kenna, and T. J. Dunfield. 1987. Preemergence Control of Goosegrass in Perennial Ryegrass.. South. Weed Sci. Soc. Proc. 40:p. 118. |
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