Palmer Amaranth and Barnyardgrass Control as Influenced by Weed Size, Glufosinate Rate, Volume, and Spray Tip
نویسندگان
چکیده
Palmer amaranth (Amaranthus palmeri) is known to be glyphosate-resistant and one of the most common and troublesome weeds in Arkansas cotton production. Glufosinate is known to provide good control of 1-4 inch Palmer amaranth, but control of larger weeds is erratic. The lack of control provided by glufosinate on large weeds may be caused by coverage issues. The objective of this study was to evaluate the effects of weed size, glufosinate rate, carrier volume, and spray tip on Palmer amaranth and barnyardgrass control.
منابع مشابه
MSMA Antagonizes Glyphosate and Glufosinate Efficacy on Broadleaf and Grass Weeds
Field and greenhouse studies were conducted to investigate the compatibility of MSMA in a tank mixture with glyphosate or glufosinate for broadleaf and grass weed control. Glyphosate, glufosinate, and MSMA were evaluated at 0.53, 13, and 23 rates, with 13 rates of 0.84 kg ae/ha, 0.5 kg ai/ha, and 2.2 kg ai/ha, respectively. Glyphosate and glufosinate provided similar levels of control for most ...
متن کاملTITLE: APPLICATION TIME OF DAY (TOD) EFFECT ON GLUFOSINATE WHEN TANK-MIXED WITH CLETHODIM ON BARNYARDGRASS EFFICACY PI: DAN REYNOLDS EXECUTIVE SUMMARY Recent trends of increasing farm size and reliance on non-selective POST herbicides for weed
Glufosinate applications at midnight showed reduced barnyardgrass control compared to applications made at noon and 6 P.M. Early morning applications at 6 A.M. also showed reduced barnyardgrass efficacy compared to applications at 6 P.M. Environmental factors such as temperature and light conditions at the time of application are likely responsible for the time of day effects observed in this s...
متن کاملHerbicide-Resistant Palmer amaranth (Amaranthus palmeri S. Wats.) in the United States — Mechanisms of Resistance, Impact, and Management
Palmer amaranth, a dioecious summer annual species, is one of the most trouble‐ some weeds in the agronomic crop production systems in the United States. In the last two decades, continuous reliance on herbicide(s) with the same mode of action as the sole weed management strategy has resulted in the evolution of herbicideresistant (HR) weeds, including Palmer amaranth. By 2015, Palmer amaranth ...
متن کاملA bioeconomic model for analysis of integrated weed management strategies for annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems
This paper describes a dynamic simulation model that allows for comprehensive assessment of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems. The main outputs of the model include weed seed and plant densities and seasonal and annualised profit over the simulated planning horizon. Results broadly in...
متن کاملLoss of Glyphosate Efficacy: A Changing Weed Spectrum in Georgia Cotton
Introduction of glyphosate resistance into crops through genetic modification has revolutionized crop protection. Glyphosate is a broad-spectrum herbicide with favorable environmental characteristics and effective broad-spectrum weed control that has greatly improved crop protection efficiency. However, in less than a decade, the utility of this technology is threatened by the occurrence of gly...
متن کامل