scholarly journals Evaluation of Alternatives for Early Season Tobacco Budworm Control in Large Plots in Southern North Carolina, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 192-192
Author(s):  
J. S. Bacheler ◽  
D. W. Mott

Abstract Cotton was planted on 10 May in a Norfolk sandy loam soil near Gibson, NC. Recommended agronomic practices for fertility and weed control were followed and 0.75 lb (AI)/acre Temik 15G was used at planting for thrips. A RCBD with 5 replicates, and 12-row (40 inch centers) × 1,900 ft plots were utilized. Treatments were applied with a John Deere* high clearance sprayer calibrated to deliver 8.0 gpa at 60 psi. The single application was made on 23 Jun. Fifty terminals and squares per plot were inspected for damage and live budworms and ten, 25-sweep samples were taken per plot with a standard 15 inch diam net for budworms on 28 Jun. Data were subjected to ANOVA and DMRT.

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ifeyinwa Monica Uzoh ◽  
Charles Arizechukwu Igwe ◽  
Chinyere Blessing Okebalama ◽  
Olubukola Olularanti Babalola

Weed Science ◽  
1983 ◽  
Vol 31 (2) ◽  
pp. 236-241 ◽  
Author(s):  
John H. Miller ◽  
Lyle M. Carter ◽  
Charles Carter

Tillage plus trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) and prometryn [2,4-bis (isopropylamino)-6-(methylthio)-s-triazine] and tillage plus trifluralin and fluometuron [1,1-dimethyl-3-(α,α,α-trifluoro-m-tolyl)urea] applied as soil-incorporated preplanting treatments were compared with tillage alone in cotton (Gossypium hirsutumL.) grown in 51-cm and 102-cm rows on fine sandy loam soil. Over 3 yr, cotton grown in 51-cm rows yielded 15% more than cotton grown in 102-cm rows. Final cotton emergence was not altered by weed-control treatment or by planting pattern. Weed-control treatments with herbicides provided essentially complete, season-long control of grass and broadleaf weeds. At cotton layby, more weeds were in no-herbicide plots with 51-cm rows compared with 102-cm rows, but at cotton harvest numbers of weeds in both row patterns were essentially equal.


Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 494-498 ◽  
Author(s):  
A. F. Wiese ◽  
E. B. Hudspeth

In a 3-year study on four soil types, subsurface application just ahead of a planter with a device that removed the top from the bed, applied a band of spray, and covered the band with soil reduced weed control in cotton (Gossypium hirsutum L.) obtained with 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), 2,4-bis(isopropylamino)-6-methylmercapto-s-triazine (prometryne), 3-(hexahydro-4,7-methanoindan-5-yl)-1,1-dimethylurea (norea), dimethyl-2,3,5,6-tetrachloroterephthalate (DCPA), and 1,1-dimethyl-3(α,α,α,-trifluoro-m-tolyl)urea (fluometuron) compared to applications on the soil surface. This machine improved weed control with α,α,α,-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin). Shallow incorporation, with two helical blades, after planting increased weed control with trifluralin, diuron, and DCPA by 10% or more over the surface applications. This incorporator increased weed control obtained with prometryne and norea 5%. Very shallow incorporation, with metal tines, after planting improved weed control obtained with trifluralin and DCPA 18 and 11%, respectively. Weed control with norea was increased 7%, but metal tines did not appreciably affect weed control obtained with prometryne, diuron, or fluometuron. Compared to surface applications, incorporation increased cotton injury with diuron, norea, prometryne, and fluometuron on sandy loam soil.


Weed Science ◽  
1994 ◽  
Vol 42 (3) ◽  
pp. 411-417 ◽  
Author(s):  
Douglas D. Buhler ◽  
William C. Koskinen ◽  
Marvin M. Schreiber ◽  
Jianying Gan

Research was conducted to determine the effect of starch encapsulation on soil dissipation and weed control with alachlor, metolachlor, and atrazine on an Estherville sandy loam in the field. Starch encapsulation increased persistence of alachlor in the surface 15 cm of soil compared to the emulsifiable concentrate formulation during the first 60 d after treatment More alachlor was detected 30 to 75 cm deep with emulsifiable concentrate than the starch-encapsulated formulation 30 d after treatment. Little alachlor was detected below 15 cm thereafter. Starch encapsulation also increased persistence of metolachlor in the surface 15 cm, but reduced concentrations at 15 to 30 cm compared to the emulsifiable concentrate 30 d after treatment. By 120 and 340 d after treatment, metolachlor concentrations at 15 to 30 cm were greater with starch-encapsulated than emulsifiable concentrate formulation. Starch encapsulation greatly increased atrazine persistence in the surface 15 cm compared to the dry flowable formulation. Although encapsulation increased atrazine concentration in the surface 15 cm, it reduced the concentration below 15 cm compared to the dry flowable formulation 30 and 60 d after treatment However, by 120 and 340 d after treatment, starch encapsulation often resulted in greater atrazine concentrations below 15 cm than the dry flowable formulation. Control of green foxtail and redroot pigweed with starch-encapsulated herbicides was similar or superior to the commercial formulations.


1995 ◽  
Vol 20 (1) ◽  
pp. 190-190
Author(s):  
J. S. Bacheler ◽  
D. W. Mott

Abstract Cotton was planted on 25 Apr in a Norfolk sandy loam near Johns, NC. Recommended agronomic practices for fertility and weed control were followed and 0.75 lb (AI)/acre Temik 15G used at planting for thrips. A RCBD was used with 5 replicates and 6-row (38 inch centers) x 50 ft plots with 10 ft alleys were utilized. Treatments were applied with a backpack CO2-pressurized sprayer calibrated to deliver 8.0 gal water at 50 psi with one TX-8 Spraying Systems hollow cone nozzle per row. Applications were made on 17, 22 Jul, 4 and 24 Aug. One hundred twenty five squares and 125 bolls (25/plot) were examined on 28 Jul and 7 Sep for damage and live BW and ECB. Insect data were subjected to ANOVA and DMRT.


2012 ◽  
Vol 12 (3) ◽  
pp. 136-145 ◽  
Author(s):  
KHAWAR JABRAN ◽  
EHSANULLAH ◽  
MUBSHAR HUSSAIN ◽  
MUHAMMAD FAROOQ ◽  
MUHAMMAD BABAR ◽  
...  

1994 ◽  
Vol 19 (1) ◽  
pp. 244-244
Author(s):  
R. L. Brandenburg ◽  
B. M. Royals

Abstract At-plant, in-furrow applied insecticides were evaluated for tobacco thrips (Frankliniella fusca) control at the Peanut Belt Research Station in Lewiston. NC-7 variety peanuts were planted on 36 inch rows on May 11 at approx. 100 lb of seed/acre. Soil temperature was 74°F and the soil was moist (0.8% H.M. and 5.7 pH). Soil series consisted of Rains + Goldsboro sandy loam. Prowl and Vernam were used for early season weed control. Plots were 2 rows wide × 50 ft long and each plot was separated by 2 buffer rows. Plots were arranged in a RCBD with 4 replicates. Plots were separated by a 5 ft barren strip. Peanuts were planted using a Cole® planter and in-furrow treatments were placed in the furrow with the seed using electric Gandy® boxes. The in-furrow application of the Orthene was applied by mounting spray nozzles directly behind the seed tube and connecting these to a COz sprayer on the planter. The sprayer was operated at 40 psi delivering approx. 30 gpa. Treatments, rates, and application techniques were listed. Peanuts were managed under standard agronomic practices. Thrips control was evaluated by determining the abundance of damaged leaflets per plot on 25 May and 1,8, 16 Jun. Twenty-five, newly-opened leaflets per plot were randomly selected and examined for thrips damage. The number of damaged leaflets was recorded. All data were transformed (square root of X + 0.5) prior to analysis. Actual means are presented in tables.


Weed Science ◽  
1977 ◽  
Vol 25 (2) ◽  
pp. 132-134 ◽  
Author(s):  
G.A. Buchanan ◽  
A.E. Hiltbold

Yields of cotton (Gossypium hirsutumL. ‘Stoneville 213′) did not differ with various cultivation practices on two soils in Alabama over a 3 to 5-yr period. Cultivation treatments resulted in cotton yields equivalent to but not greater than those resulting from weed removal without soil stirring. However, lack of any weed control resulted in more than 90% yield reduction on Decatur clay loam soil based on a 5-yr average and 95% yield reduction on Hartsells fine sandy loam soil, based on a 3-yr average.


Agronomie ◽  
2002 ◽  
Vol 22 (7-8) ◽  
pp. 731-738 ◽  
Author(s):  
Roland Harrison ◽  
Sharon Ellis ◽  
Roy Cross ◽  
James Harrison Hodgson

Sign in / Sign up

Export Citation Format

Share Document