Effect of Post-Emergence Weed Control on Grass Establishment in North-Central Colorado

1968 ◽  
Vol 21 (3) ◽  
pp. 126 ◽  
Author(s):  
William J. McGinnies
Keyword(s):  
Weed Control ◽  
North Central ◽  
Grass Establishment

Enhanced Soil Degradation of Butylate and EPTC in Nebraska Fields

1989 ◽  
Vol 3 (1) ◽  
pp. 24-29 ◽  
Author(s):  
Fred W. Roeth ◽  
Robert G. Wilson ◽  
Alex R. Martin ◽  
Patrick J. Shea
Keyword(s):  
Weed Control ◽  
Soil Degradation ◽  
Central Field ◽  
North Central ◽  
Herbicide Degradation ◽  
Accelerated Degradation ◽  
South Central ◽  
Field Soils ◽  
Enhanced Degradation

A survey to determine the frequency and weed control impact of enhanced degradation of butylate or EPTC in field soils receiving repeat applications of these herbicides was conducted in a sugarbeet and three corn growing areas of Nebraska. All seven of the sugarbeet field soils exhibited enhanced EPTC degradation. In the corn areas, none of the 13 north central and southeast field soils displayed accelerated degradation; however, 10 of the 16 south central field soils did. In south central Nebraska, 60% and 45% of the surveyed growers were dissatisfied with weed control from butylate or EPTC in 1983 and 1984, respectively, compared to 24% and none in other survey areas. Enhanced herbicide degradation and the presence of shattercane were the main reasons for the disparity among areas.

scholarly journals Effect of neem fertilizer rates and weed control methods on the growth and yield of soybeans (Glycine max (L.) merrill) in north Central Nigeria

2021 ◽  
Vol 19 (1) ◽  
pp. 31-47
Author(s):  
Y. Garba ◽  
Z. Yakubu ◽  
A.I. Yakubu ◽  
J. Alhassan ◽  
M. Gana ◽  
...  
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Block Design ◽  
Growth And Yield ◽  
Control Methods ◽  
North Central ◽  
Glycine Max L ◽  
Number Of Leaves ◽  
Experimental Treatments ◽  
Fertilizer Rates

Two field experiments were conducted at the Research Farm of the Ibrahim Badamasi Babangida University, Lapai, Niger State during the 2018 and 2019 rainy seasons to determine the effect of neem fertilizer rates and weed control methods on the growth and yields of soybeans. The experimental treatments were made up of four neem fertilizer rates (0, 50, 100 and 150 kg ha-1) and six weed control methods (pendimethalin at 1.5 kg a.i ha-1 followed by one hoe weeding, pendimethalin at 2.0 kg a.i. ha-1 followed by diuron at 1.5 kg a.i ha-1, weeding once at 3 WAS, weeding twice at 3 and 6 WAS, weed free and weedy check. The experiment was a 3 × 3 factorial experiment laid out in a Randomize complete block design replicated three times. TGX 1448 – 2E variety of soybean was used for the study. Result showed that weed control efficiency was better with the use of 150 kg ha-1 of neem fertilizer, while decrease in weed dry matter was obtained at 50 kg ha-1. Increase in number of leaves and leaf area were encouraged with 150 kg ha-1 of neem fertilizer. Weed free treatments recorded the highest grain yield and 100 seed weight of soybean. Pendimethalin at 1.5 or 2.0 kg a.i ha-1 supplemented with one hoe weeding or diuron at 1.5 kg a.i ha-1 respectively can be an alternative for better control of weeds to obtain greater yield of soybean in the study area.

scholarly journals Site preparation impacts on soil biotic and abiotic properties, weed control, and native grass establishment

2020 ◽  
Author(s):  
Monique E. Smith ◽  
Timothy R. Cavagnaro ◽  
Matthew J. Christmas ◽  
Leanne M. Pound ◽  
José M. Facelli
Keyword(s):  
Weed Control ◽  
Site Preparation ◽  
Native Grass ◽  
Grass Establishment

Selective Weed Control in Seedling Cool-Season Grasses

Weed Science ◽  
1970 ◽  
Vol 18 (2) ◽  
pp. 288-291 ◽  
Author(s):  
C. L. Canode ◽  
W. C. Robocker
Keyword(s):  
Acetic Acid ◽  
Weed Control ◽  
Seed Production ◽  
Cool Season ◽  
Grass Seed ◽  
Selective Control ◽  
Anisic Acid ◽  
Grass Establishment ◽  
Dichlorophenoxy Acetic Acid

Seven herbicides were applied for selective weed control on three different seedling stands of five cool-season grasses. The herbicides were evaluated for their influence on weed control, grass establishment, and first crop grass seed production. These experiments indicate that 3,5-dibromo-4-hydroxybenzonitrile (bromoxynil) was outstanding in selective control of broadleaf weeds in seedling grass stands. Two other herbicides, 3,6-dichloro-o-anisic acid (dicamba) and 6,7-dihydrodipyrido[1,2-a:2′,1′-c]pyrazinediium ion (diquat) were valuable under most conditions. The remaining herbicides—(2,4-dichlorophenoxy)acetic acid (2,4-D), 2-sec-butyl-4,6-dinitrophenol (dinoseb), 2,3,6-trichlorobenzoic acid (2,3,6-TBA), and 1-butyl-3-(3,4-dichlorophenyl)-1-methylurea (neburon)—were satisfactory for selective weed control under some conditions, but their effects were not uniform for the different species and plantings.

scholarly journals Screening preemergence herbicides for weed control in cassava

2020 ◽  
Vol 34 (5) ◽  
pp. 735-747
Author(s):  
Friday Ekeleme ◽  
Alfred Dixon ◽  
Godwin Atser ◽  
Stefan Hauser ◽  
David Chikoye ◽  
...  
Keyword(s):  
Weed Control ◽  
Control Measures ◽  
Sub Saharan Africa ◽  
Root Yield ◽  
North Central ◽  
Herbicide Treatments ◽  
Sub Saharan ◽  
Cropping Seasons ◽  
Preemergence Herbicides ◽  
Grass Weed

AbstractWeed competition severely constrains cassava root yield in sub-Saharan Africa; thus, good weed control measures, including the use of herbicides, are increasingly important. Herbicide trials were conducted at five locations across eastern, western, and north-central Nigeria over two cropping seasons (2014 and 2015). Nineteen premixed PRE herbicides applied at different rates were evaluated for efficacy on weeds and selectivity on cassava. Manual hoe-weeding at 4, 8, and 12 wk after planting (WAP) and two S-metolachlor + atrazine treatments commonly used by cassava growers were included for comparison. Six of the 19 PRE herbicide treatments (indaziflam + isoxaflutole, indaziflam + metribuzin, flumioxazin + pyroxasulfone, isoxaflutole, acetochlor + atrazine + terbuthylazine, and terbuthylazine + S-metolachlor) consistently provided 80% to 98% broadleaf and grass weed control up to 8 wk after treatment. Overall, PRE herbicide treatments and cassava yield were significantly positively correlated. Herbicide treatments terbuthylazine + S-metolachlor, flumioxazin + pyroxasulfone, diflufenican + flufenacet + flurtamone (respectively, 60 + 60 + 60, 120 + 120 + 120, 90 + 360 + 120, and 135 + 360 + 180 g ha−1), acetochlor + atrazine + terbuthylazine (875 + 875 + 875 g ha−1), S-metolachlor + atrazine (870 + 1,110 g ha−1), oxyfluorfen (240 g ha−1), indaziflam + isoxaflutole (75 + 225 g ha−1), indaziflam + metribuzin (75 + 960 g ha−1), and aclonifen + isoxaflutole (500 + 75 g ha−1) contributed to yields exceeding twice the Nigerian national average of 8.76 tonnes ha−1. These treatments had root yields of 1.4 to 2 times higher than plots that had been hoe-weeded three times. There were some adverse herbicide treatment effects such as delayed cassava sprouting and temporary leaf bleaching observed in indaziflam and diflufenican + flufenacet + flurtamone treatments, whereas sulfentrazone caused prolonged leaf crinkling. The PRE applications alone at rates safe for cassava did not provide adequate season-long weed control; supplemental POST weed control is needed about 10 WAP for satisfactory season-long control.

Integrating Herbicide Use and Perennial Grass Revegetation to Suppress Weeds in Noncrop Areas

2010 ◽  
Vol 3 (1) ◽  
pp. 81-92 ◽  
Author(s):  
Rob G. Wilson ◽  
Steve B. Orloff ◽  
Donald L. Lancaster ◽  
Donald W. Kirby ◽  
Harry L. Carlson
Keyword(s):  
Weed Control ◽  
Native Species ◽  
Perennial Grass ◽  
Perennial Grasses ◽  
Grass Species ◽  
Grass Cover ◽  
Weed Cover ◽  
Grass Establishment ◽  
Herbicide Use ◽  
The Impact

AbstractNoncropland such as levees, roadsides, field borders, fencerows, and wildlife areas are vulnerable to weed invasion. Many sites have undergone frequent human disturbance, such as manipulation from surrounding land uses, and lack competitive, desirable vegetation. This study addressed the importance of revegetation in an integrated weed management program including revegetation for noncrop areas. The study evaluated 14 cool-season perennial grasses (seven native species and eight introduced species) for their establishment, vigor, and ability to suppress weeds. It also evaluated the impact of herbicides on weed control and grass establishment. Treatments were applied at three noncrop sites in Northeast California that were heavily infested with weeds. Chemical weed control during the year of seeding and the following year was critical for perennial grass establishment. Weed cover was greater than 50% whereas average seeded grass cover was less than 6% in untreated plots at all sites 2 yr after seeding. In contrast, average seeded grass cover at all sites was 22 to 31% 2 yr after seeding for treatments where herbicide use resulted in wide-spectrum weed control and grass safety. Increasing perennial grass cover decreased total weed cover across perennial grass species 1and 2 yr after seeding. Individual grass species' cover differed among sites. Two introduced grasses (tall wheatgrass and crested wheatgrass) and three native grasses (western wheatgrass, bluebunch wheatgrass, and thickspike wheatgrass) showed broad adaptation and had > 20% cover at all sites 2 yr after seeding. In herbicide-treated plots, these grasses reduced total weed cover by 43 to 98% compared to unseeded plots 2 yr after seeding.

Weed Control in Pastures in the North Central Region

Weeds ◽  
1956 ◽  
Vol 4 (4) ◽  
pp. 369 ◽  
Author(s):  
Dayton L. Klingman
Keyword(s):  
Weed Control ◽  
Central Region ◽  
North Central Region ◽  
North Central ◽  
The North

Assessment of Weed Control Strategies for Corn in the North-Central United States

2004 ◽  
Vol 18 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Brent E. Tharp ◽  
James J. Kells ◽  
Thomas T. Bauman ◽  
R. Gordon Harvey ◽  
William G. Johnson ◽  
...  
Keyword(s):  
United States ◽  
Weed Control ◽  
Broad Spectrum ◽  
Control Strategies ◽  
Corn Yield ◽  
Herbicide Application ◽  
Economic Return ◽  
North Central ◽  
The North ◽  
Central United States

Field experiments were conducted across the north-central United States to determine the benefits of various weed control strategies in corn. Weed control, corn yield, and economic return increased when a preemergence (PRE) broad-spectrum herbicide was followed by (fb) postemergence (POST) herbicides. Weed control decisions based on field scouting after a PRE broad-spectrum herbicide application increased weed control and economic return. Application of a PRE grass herbicide fb a POST herbicide based on field scouting resulted in less control of velvetleaf and morningglory species, corn yield, and economic return compared with a PRE broad-spectrum herbicide application fb scouting. Cultivation after a PRE broad-spectrum herbicide application increased weed control and corn yield compared with the herbicide applied alone, but economic return was not increased. An early-postemergence herbicide application fb cultivation resulted in the highest level of broadleaf weed control, the highest corn yield, and the greatest economic return compared with all other strategies. Weed control based on scouting proved to be useful in reducing the effect of weed escapes on corn yield and increased economic return compared with PRE herbicide application alone. However, economic return was not greater than the PRE fb planned POST or total POST strategies.

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