Recent confirmation of dicamba-resistant kochia [Bassia scoparia (L.) A.J. Scott] in Alberta warrants investigation resistance to other commonly used synthetic auxin herbicides like fluroxypyr. A randomized-stratified survey 305 sites was conducted 2017 determine the status fluroxypyr-resistant kochia. Overall, 13% populations were fluroxypyr-resistant. Only 4% both fluroxypyr- and dicamba-resi...

Kua’zu is spreading in ~ht Soulh and confrol mtawra are rquirtd on largt acrtagfi. Conlrol can lu accomplished by /xr&tml apPlica4ions of cffecliw htrbicidts or bvowrgrazingfor Iwo lo lhree fwrs. Soil-atliw htrbicid6 con&&g lht aclivt ingrtditnls pi&ram ar dicamba are prcs&& most effec~ivt. Ht&cidt sprap should bt applitd in a mix~urr wilh 60 lo 100 gallon3 of waltr fur acrt: complttr covtragt ...

Crops engineered to contain genes for tolerance to multiple herbicides may be treated with several herbicides to manage weeds resistant to each herbicide. Thus, nearby non-target plants may be subjected to increased exposure to several herbicides used in combination. Of particular concern are native plants, as well as adjacent crops which have not been genetically engineered for tolerance to he...

Recent monitoring shows that the majority of urban streams in the United States are contaminated by pesticide residues, and the contamination is mainly due to runoff from residential landscapes. In this study we evaluated the effect of landscape planting on persistence of the herbicides 2,4-D and dicamba in soil under laboratory conditions. The herbicides exhibited substantially different persi...

Abstract Velvetleaf is an economically important weed in agronomic crops Nebraska and the United States. Dicamba applied alone usually does not provide complete velvetleaf control, particularly when taller than 15 cm. The objectives of this experiment were to evaluate interaction dicamba, fluthiacet-methyl, glyphosate or a mixture two- three-way combinations for control dicamba/glyphosate–resis...

Successful weed control before seeding is necessary for proper turfgrass establishment. However, herbicide labels differ in the time required between application and seeding. The objective of this research was to determine influence four postemergence broadleaf combination herbicides on tall fescue ( Festuca arundinacea ) cover, normalized difference vegetation index (NDVI), canopy height when ...