EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Johnsongrass response to postemergence herbicides applied the previous year



Johnsongrass response to postemergence herbicides applied the previous year



Journal of Production Agriculture 11(4): 507-509



Field experiments were conducted in West Virginia (1992-1994) and Georgia (1995-1996) to evaluate the effects of glyphosate, imazameth (2-(4,5-dihydro-4-methyl-4-(1-methyl-ethyl)-5-oxo-1H-imadazol-2-yl)-5)-methyl-3-pyridinecarboxylic acid), nicosulfuron (2- (((((4,6-dimethoxy-2-pyrimidinyl)aminolcarbonyl) amino)sulfonyl)-N,N-dimethyl-3-pyridinecarboxamide), and primisulfuron (methyl 2-((((4,6-bis(difluoromethoxy)-2-pyrimidinyl)amino)carbonyl)amino) sulfonyl)benzoate) applied postemergence to johnsongrass (Sorghum halepense L.) the previous year. Glyphosate at 0.75 lb ae/acre, nicosulfuron at 0.031 lb ai/acre, primisulfuron at 0.035 lb ai/acre, nicosulfuron (0.016 lb/acre) tank-mixed with primisulfuron (0.018 lb/acre), nicosulfuron (0.031 lb/acre) tank-mixed with primisulfuron (0.035 lb/acre), or imazameth at 0.064 lb ai/acre were applied postemergence to 18- to 20-in. johnsongrass regrowth 2 to 3 wk after mowing. Glyphosate provided the most consistent johnsongrass control (85% or greater) 8 wk after treatment (WAT). Tank-mixing nicosulfuron and primisulfuron did not increase control when compared to nicosulfuron applied alone. Imazameth and primisulfuron did not control johnsongrass over 81% in 1993 or 1995 at 8 WAT. Glyphosate and nicosulfuron applied alone the previous year gave greater thin 70% control of johnsongrass regrowth in two out of three experiments. Stem counts and fresh weights indicated that treatments reduced regrowth in 1993 but not in 1994 at 53 WAT. Glyphosate reduced stem counts and fresh weight in two out of three experiments. Most treatments reduced johnsongrass regrowth the following year when applied to nonstressed johnsongrass; however, treatments applied to moisture stressed johnsongrass did not provide control the following year.

(PDF emailed within 1 workday: $29.90)

Accession: 003186416

Download citation: RISBibTeXText



Related references

Johnsongrass control in corn by postemergence-applied herbicides. Research Bulletin Georgia Agricultural Experiment Stations ( 392): 7 pp., 1990

Selective rhizome johnsongrass control in soybeans with soil-applied and postemergence herbicides. Proceedings North Central Weed Control Conference (Volume 35): 21, 1980

Johnsongrass (Sorghum halepense) control in soybeans (Glycine max) with postemergence grass herbicides applied alone and in mixtures. Weed Science 33(5): 673-678, 1985

Johnsongrass control with postemergence herbicides. Proceedings, Southern Weed Science Society, 38th annual meeting: 42-43, 1985

Turfgrass species response to herbicides applied postemergence. Weed Technology 1(4): 305-311, 1987

Response of six Ipomoea sp. and two Cassia sp. to postemergence applied herbicides. Proceedings of the 30th Annual Meeting of the Southern Weed Science Society: 136, 1977

Winter wheat response to herbicides applied postemergence. Agronomy Journal 65(5): 749-751, 1973

Johnsongrass control in soybeans with postemergence herbicides. Proceedings 34th Annual Meeting Southern Weed Science Society: 50, 1981

Selective postemergence johnsongrass herbicides for soybean production. Proceedings North Central Weed Control Conference, 1977 (Vol. 32): 30, 1977

Soybean oil as an additive for postemergence johnsongrass herbicides in soybeans. Proceedings, Southern Weed Science Society, 38th annual meeting: 128, 1985

Postemergence herbicides for Johnsongrass control in sweet corn. Tennessee Farm and Home Science ( 165): 43-47, 1993

Johnsongrass control and regrowth with postemergence grass herbicides. Arkansas Farm Research 39(4): 6, 1990

Control of barnyardgrass and johnsongrass in sugarbeets with postemergence herbicides. PR Texas Agricultural Experiment Station: 987 (4538), 1987

Johnsongrass control with postemergence herbicides in wide and narrow row soybeans. Proceedings, North Central Weed Control Conference (Vol.39): 29, 1984

An economic evaluation of postemergence herbicides for johnsongrass control in soyabeans. Arkansas Farm Research 41(3): 8-9, 1992