Increased adoption of crops with stacked traits conferring glyphosate and dicamba resistance, recent confirmation kochia [Bassia scoparia (L.) A.J. Scott] biotypes resistant to these herbicides in Alberta Saskatchewan, warrant surveillance herbicide-resistant Manitoba. A randomized–stratified survey 315 sites Manitoba was conducted the fall 2018. Overall, 58% populations tested were glyphosate-...

Control of hardwoods is vitally important in the establishment of Douglas-fir seedlings on Pacific Northwest forest lands. In reducing the competition of these brushy species, herbicides have become nearly an indispensable tool. However, with the increasing awareness of the importance of a clean environment, it has become apparent that the safe use of these chemicals requires a knowledge of the...

The wide adoption of dicamba-tolerant (DT) soybean has led to numerous cases off-target dicamba damage non-DT and dicot crops. This study aimed develop a method differentiate response using unmanned-aerial-vehicle-based imagery machine learning models. Soybean lines were visually classified into three classes injury, i.e., tolerant, moderate, susceptible dicamba. A quadcopter with built-in RGB ...

Abstract A field experiment was conducted in 2019 and 2020 that included six site-years four locations Arkansas to determine the optimal sequence timing of dicamba glufosinate applications when applied alone, sequentially, or combination control Palmer amaranth by size: labeled (<10 cm height) non-labeled (13 25 height). Single dicamba, glufosinate, plus (not labeled) resulted less than 80% ...

Pesticides applied to turf grass have been detected in surface waters raising concerns of their effect on water quality and interest in their source, hydrological transport and use of models to predict transport. TurfPQ, a pesticide runoff model for turf grass, predicts pesticide transport but has not been rigorously validated for larger storms. The objective of this study was to determine Turf...

Kochia ( Bassia scoparia (L.) A.J. Scott) is a problematic tumbleweed, which infests row crops and ruderal areas within western Canada. Herbicide resistance makes kochia management challenging for producers. Widespread to acetolactate synthase-inhibitors, evolution spread of glyphosate resistance, the occurrence dicamba has been previously noted in Saskatchewan. This study's objective was evalu...