scholarly journals Aerial and ground‐based assessments of preemergence herbicide effects on st. augustinegrass grow‐in

itsrj ◽  
2021 ◽  
Author(s):  
Amy Lisette Wilber ◽  
James D. McCurdy ◽  
Joby M.P. Czarnecki ◽  
Barry R. Stewart ◽  
Hongxu Dong
Keyword(s):  
Herbicide Effects

Rethinking the term “glyphosate effect” through the evaluation of different glyphosate-based herbicide effects over aquatic microbial communities

2021 ◽  
pp. 118382
Author(s):  
Carmen Alejandra Sabio y García ◽  
María Solange Vera ◽  
Alicia Vinocur ◽  
Martín Graziano ◽  
Cecilia Miranda ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Herbicide Effects

scholarly journals Preemergence Herbicide Effects on Hybrid Bermudagrass Root Architecture and Establishment

HortScience ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 567-572 ◽  
Author(s):  
Erick G. Begitschke ◽  
James D. McCurdy ◽  
Te-Ming Tseng ◽  
T. Casey Barickman ◽  
Barry R. Stewart ◽  
...  
Keyword(s):  
Root Length ◽  
Root Architecture ◽  
Cynodon Dactylon ◽  
Future Research ◽  
Root Mass ◽  
Randomized Design ◽  
Herbicide Treatments ◽  
Negative Effect ◽  
Herbicide Effects ◽  
Preemergence Herbicides

Preemergence herbicides generally have a negative effect on hybrid bermudagrass [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy] establishment. However, little is known about the effect they have on root architecture and development. Research was conducted to determine the effects of commonly used preemergence herbicides on ‘Latitude 36’ hybrid bermudagrass root architecture and establishment. The experiment was conducted in a climate-controlled greenhouse maintained at 26 °C day/night temperature at Mississippi State University in Starkville, MS, from Apr. 2016 to June 2016 and repeated from July 2016 to Sept. 2016. Hybrid bermudagrass plugs (31.6 cm2) were planted in 126-cm2 pots (1120 cm3) and preemergence herbicide treatments were applied 1 d after planting at the recommended labeled rate for each herbicide. Preemergence herbicide treatments included atrazine, atrazine + S-metolachlor, dithiopyr, flumioxazin, indaziflam, liquid and granular applied oxadiazon, S-metolachlor, pendimethalin, prodiamine, and simazine. Treatments were arranged in a completely randomized design with four replications. Plugs treated with indaziflam and liquid applied oxadiazon failed to achieve 50% hybrid bermudagrass cover by the end of the experiment. Of the remaining herbicide treatments, all herbicides other than granular applied oxadiazon and atrazine increased the number of days required to reach 50% cover (Days50). In addition, all herbicide treatments reduced root mass when harvested 6 weeks after treatment (WAT) relative to the nontreated. By 10 WAT, all treatments reduced root mass in run 1, but during run 2, only prodiamine, pendimethalin, simazine, atrazine + S-metolachlor, liquid applied oxadiazon, and indaziflam reduced dry root mass compared with the nontreated. At 4 WAT, all treatments other than simazine and granular applied oxadiazon reduced root length when compared with the nontreated. By 10 WAT, only dithiopyr, S-metolachlor alone, and indaziflam reduced root length when compared with the nontreated. No differences were detected in the total amounts of nonstarch nonstructural carbohydrates (TNSC) within the roots in either run of the experiment. Results suggest that indaziflam, dithiopyr, and S-metolachlor are not safe on newly established hybrid bermudagrass and should be avoided during establishment. For all other treatments, hybrid bermudagrass roots were able to recover from initial herbicidal injury by 10 WAT; however, future research should evaluate tensile strength of treated sod.

Herbicide Effects on Visible Injury, Leaf Area, and Yield of Glyphosate-Resistant Soybean (Glycine max)1

2002 ◽  
Vol 16 (3) ◽  
pp. 554-566 ◽  
Author(s):  
BRYAN F. JOHNSON ◽  
WILLIAM A. BAILEY ◽  
HENRY P. WILSON ◽  
DAVID L. HOLSHOUSER ◽  
D. AMES HERBERT ◽  
...  
Keyword(s):  
Glycine Max ◽  
Leaf Area ◽  
Visible Injury ◽  
Herbicide Effects

Environment and Herbicide Effects on Canada Thistle Ecotypes

Weed Science ◽  
1972 ◽  
Vol 20 (2) ◽  
pp. 163-167 ◽  
Author(s):  
James H. Hunter ◽  
Leon W. Smith
Keyword(s):  
Acetic Acid ◽  
Root Development ◽  
Leaf Damage ◽  
Cirsium Arvense ◽  
Temperature Dependent ◽  
Canada Thistle ◽  
Anisic Acid ◽  
Herbicide Effects ◽  
Increasing Temperature ◽  
Dichlorophenoxy Acetic Acid

Root sections of seven Canada thistle(Cirsium arvense(L.) Scop.) ecotypes were grown under 8, 12, 14, and 16-hr photoperiods at 16, 21, and 27 C. Flowering occurred in all ecotypes under a 16-hr photoperiod. At the 14-hr photoperiod five ecotypes flowered; flowering in three of them was temperature-dependent. Shoot and root development and plant height varied with ecotype. Both the root-to-shoot ratios and the number of shoot buds formed on the roots were inversely related to temperature and length of photoperiod. Herbicides tested for their effects on Canada thistle were 4-amino-3,5,6-trichloropicolinic acid (picloram), 3,6-dichloro-o-anisic acid (dicamba), and (2,4-dichlorophenoxy)acetic acid (2,4-D). Control of top growth increased with increasing temperature. Similarly, root control was maximum at 27 C, at which temperature there were few fleshy roots. Picloram, unlike 2,4-D and dicamba, caused little leaf damage but completely destroyed the root system.

Herbicide Effects in Connecticut Vegetation, 1948

Ecology ◽  
1949 ◽  
Vol 30 (2) ◽  
pp. 248-256 ◽  
Author(s):  
Frank E. Egler
Keyword(s):  
Herbicide Effects

Herbicide Effects on Parasitism of Tomato by Hemp Broomrape

Weed Science ◽  
1973 ◽  
Vol 21 (3) ◽  
pp. 253-258 ◽  
Author(s):  
A. R. Saghir ◽  
C. L. Foy ◽  
K. M. Hameed
Keyword(s):  
Lycopersicon Esculentum ◽  
Activated Charcoal ◽  
Dry Weight ◽  
Shoot Dry Weight ◽  
Crop Injury ◽  
Selective Control ◽  
Tomato Roots ◽  
Orobanche Ramosa ◽  
Herbicide Effects

Thirteen soil-incorporated herbicides, mainly of the dinitroaniline and carbamate groups, were evaluated in the greenhouse for selective control of hemp broomrape (Orobanche ramosaL.) in tomato (Lycopersicon esculentumMill. ‘Rutgers’). Hemp broomrape readily parasitized tomato roots and competed vigorously with the host. Shoots of the parasite emerged within 6 weeks after inoculation. Herbicides at 0.1 to 10.0 ppmw, with one exception, significantly reduced shoot dry weight of tomato measured at 10 weeks after treatment, in comparison with untreated, noninoculated controls. Generally, the degree of inhibition of establishment of the parasite was correlated with herbicidal injury to tomato. None of the treatments prevented the establishment of the parasite without causing severe crop injury. However,N-n-propyl-N-tetrahydrofurfuryl-4-trifluoromethyl-2,6-dinitroaniline (CGA-14397, ER-9063) at 3.3 and 6.6 ppmw exhibited some degree of selectivity as indicated by relative shoot dry weights of the host and parasite. Activated charcoal applied as a root dip on tomato or in soil admixtures prior to transplanting had no effect on parasitism and growth of hemp broomrape.

Herbicide effects on planktonic systems of different complexity

Hydrobiologia ◽  
1989 ◽  
Vol 188-189 (1) ◽  
pp. 415-424 ◽  
Author(s):  
Winfried Lampert ◽  
Walter Fleckner ◽  
Eckart Pott ◽  
Ursula Schober ◽  
Karl-Ulrich Störkel
Keyword(s):  
Herbicide Effects
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