Download or read book Italian Ryegrass Lolium Multiflorum Management in Winter Wheat Triticum Aestivum with AE F130060 Plus AE F115008 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diclofop-resistant Italian ryegrass has become a major problem throughout the southeastern United States. AE F130060 plus AE F115008 are herbicides currently under development that are equally effective on diclofop- susceptible and -resistant Italian ryegrass. Field and greenhouse experiments were conducted to investigate the use of these herbicides in North Carolina. In a cultivar tolerance study conducted at weed-free locations, the cultivars 'Coker 9663', 'Coker 9704', and 'Pioneer 2580' were most tolerant of AE F130060 plus AE F115008, the cultivars 'FFR 555', and 'Pioneer 2684' were intermediate in tolerance, and the variety 'Jackson' was least tolerant. Yield reductions were attributed to fewer kernels per spike in treated versus non-treated wheat. AE F130060 plus AE F115008 injured weed-free wheat 27% and reduced yield 7% when the safener, AE F107892, was not included. Yield reductions were not observed with herbicide:safener ratios of 1:1 or 1:3 applied to 3-leaf, 2-tiller, or 6-tiller wheat. Increased Italian ryegrass control was noted when AE F130060 plus AE F115008 was applied with nitrogen as the carrier, however increased crop injury was a concern in trials conducted on weed-free wheat. Italian ryegrass control by AE F130060 plus AE F115008 was not affected in a tank mixture with thifensulfuron plus tribenuron. Reduced control was noted in the field and greenhouse when AE F130060 plus AE F115008 was mixed with 2,4-D or dicamba. No tank mixture affected wheat injury. In an adjuvant comparison study, the inclusion of an adjuvant with AE F130060 plus AE F115008 accelerated Italian ryegrass control 3 WAT compared to application without an adjuvant. Control by the herbicides was similar with or without an adjuvant at 6 and 10 WAT. The adjuvants tested included nonionic surfactants, an organosilicone surfactant, and crop oil concentrate. Both weed-free and Italian ryegrass-infested wheat treated with the herbicides alone and mixed with adjuvants produced simi.

Download or read book Italian Ryegrass Lolium Multiflorum Management in Winter Wheat Triticum Aestivum with AE F130060 Plus AE F115008 written by Herman Lane Crooks (III.) and published by . This book was released on 2003 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: thifensulfuron, LOLMU, 2, 4-D, dicamba, herbicide mixtures, herbicide interactions, yield components, herbicide injury, cultivar response, tribenuron, herbicide carriers, surfactant rates, crop oil concentrate, nonionic surfactant, organosilicone adjuvant, herbicide wash-off, rain-free period.

Download or read book Weed Technology written by and published by . This book was released on 2009 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Italian Ryegrass Lolium Multiflorum Control in Imidazolinone tolerant Wheat Triticum Aestivum Under the Direction of Dr Alan York written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Italian ryegrass is the most problematic weed of small grains in North Carolina. This weed has traditionally been controlled in wheat with diclofop. However, after many years of continuous use, much of the Italian ryegrass in the state is now resistant to diclofop. A field experiment was conducted at three locations to determine control of Italian ryegrass and response of imidazolinone-tolerant wheat to imazamox and other herbicides. Imazamox ammonium salt applied POST in the fall to 3- to 4-leaf Italian ryegrass at 35 to 53 g ae/ha controlled Italian ryegrass 90 to 100% 10 weeks after treatment. Late-season control ranged from 83 to 98% at two locations and 24 to 55% at the third location. Late-season control from spring-applied imazamox on 1- to 3-tiller ryegrass ranged from 53 to 58% at one location and 7 to 16% at the other locations. Split application of imazamox at 27 g/ha in the fall and 27 g/ha in the spring was less effective than fall-applied imazamox at 53 g/ha at two of three locations. However, split application was more effective than spring application. Fall-applied imazamox was less effective than fall-applied diclofop on diclofop-susceptible Italian ryegrass but more effective on mixed populations of diclofop-resistant and -susceptible biotypes. Pendimethalin applied PRE at 1120 g ai/ha increased late-season control 10 to 33 percentage points when used in combination with fall-applied imazamox at 35 g/ha. Imazethapyr ammonium salt at 70 g ae/ha was less effective than imazamox, while imazethapyr at 47 g/ha plus imazapyr isopropylamine salt at 16 g ae/ha and imazamox were similarly effective. Imazapic ammonium salt at 70 g ae/ha and imazamox at 53 g/ha were similarly effective at two locations, while imazapic was more effective at the third location. Imidazolinone herbicides caused only minor, temporary chlorosis on the wheat. In greenhouse experiments, a diclofop-susceptible biotype of Italian ryegrass was more sensitive to imazamox than a diclofop-

Download or read book Proceedings Southern Weed Science Society written by Southern Weed Science Society (U.S.) and published by . This book was released on 2002 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 2002 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Phosphorus on Italian Ryegrass Lolium Multiflorum Lam Growth and Alternative Herbicide Management for Diclofop resistant Italian Ryegrass in Winter Wheat Triticum Aestivum L written by Trinidad María Pérez-Fernández and published by . This book was released on 1999 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effectiveness of Diclofop for Control of Italian Ryegrass Lolium Multiflorum in Winter Wheat Triticum Aestivum written by Edward L. Robinson and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution and Control of Herbicide Resistant Italian Ryegrass Lolium Perenne L Ssp Multiflorum Lam Husnot in Winter Wheat Triticum Aestivum L in North Carolina written by Zachary Ryan Taylor and published by . This book was released on 2015 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Selected Herbicides on Italian Ryegrass Lolium Multiflorum and Returns from Hard Red Winter Wheat Triticum Aestivum written by Matthew Austin Barnes and published by . This book was released on 1999 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effectiveness of Diclofop for Control of Italian Ryegrass Lolium Multiflorum in Winter Wheat Triticum Aestivum written by E. L. Robinson and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improving Winter Wheat Yield and Quality by Controlling Italian Ryegrass Lolium Multiflorum LAM in Winter Canola written by Jerry Chad Webb and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Italian Ryegrass Lolium Multiflorum Control in Imidazolinone tolerant Wheat Triticum Aestivum written by Kevin Christman Clemmer and published by . This book was released on 2002 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: tribenuron, LOLMU, herbicide interactions, dicamba, pendimethalin, imazethapyr, imazapyr, imazapic, imazamox, herbicide-resistant biotypes, diclofop, Clearfield wheat, Triticum aestivum, thifensulfuron.

Download or read book Germination Times and Control of Italian Ryegrass Lolium Multiflorium L in Hard Red Winter Wheat Triticum Aestivum L written by Samuel Bosco Pratt and published by . This book was released on 1989 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating the Interaction Between Herbicide and Fertilizer Application Timing to Improve Italian Ryegrass Control Grain Quality and Yield in Oklahoma Wheat Production written by Steven Robert Calhoun and published by . This book was released on 2013 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Controlling Italian ryegrass (Lolium multiflorum Lam.) is a serious problem for Oklahoma winter wheat (Triticum aestivum L.) producers to face. Italian ryegrass, when not controlled, reduces wheat yield and overall grain quality due to higher than acceptable levels of inert material. The overarching objective of this experiment was to evaluate the interaction between N fertilizer application timing and post-emergence herbicide application timing for control of Italian ryegrass. This interaction will be evaluated based on grain yield, grain quality (protein concentration and dockage in harvested grain), N accumulation in winter wheat and Italian ryegrass, biomass growth, and control of Italian ryegrass. Italian ryegrass was controlled with Axial XL (Pinoxaden) four times, three in the fall during 2011 and once in the fall of 2012 and once in the fall 2012 and twice in the spring of 2013. Tissue samples collect during the 2011-2012 growing season showed an increase in wheat biomass weights when Italian ryegrass populations were controlled. Good growing conditions early in the 2011-2012 growing season allowed wheat biomass to develop and out compete the Italian ryegrass. The greatest Italian ryegrass densities were discovered in the 0 Kg N ha−1 N application rate, poor fertility reduced the competitiveness of wheat. Yields in the weedy plots were slightly lower than the weed free plots that received the same amount of N. Although not significant at all locations between each N rate, the overall grain yields where increase between 37 to 521 Kg ha−1 when Italian ryegrass was controlled in the fall. The results found in the study can be used to better manage herbicide and N inputs for maximum weed control, grain quality, yield, and economic return.

Download or read book Control of Italian Ryegrass Lolium Perenne L Spp Multiflorum Lam Husnot in Wheat Triticum Spp and Evaluation of Resistance to Acetyl CoA Carboxylase Inhibiting Herbicides written by and published by . This book was released on 2009 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Italian ryegrass is important to Tennessee wheat producers. Control of Italian ryegrass has become more difficult over the years due to diclofop resistance. Italian ryegrass resistance to diclofop has been documented in several countries including the US. Tennessee producers have begun to notice that ryegrass escapes are becoming more prevalent than in years past. The purpose of this research was to use glasshouse methods to screen selected populations of Italian ryegrass for resistance to diclofop and to a more recent wheat herbicide pinoxaden and to utilize field experiments to develop herbicide programs for control Italian ryegrass in the field. Resistance to diclofop was found in eight TN populations. The eight populations did not show cross-resistance to pinoxaden. One population from Union County, NC (R1) was found to be resistant to both diclofop and pinoxaden. The level of resistance to pinoxaden of the R1 population was 14 x that of the susceptible population. Field experiments demonstrated preemergence (PRE) Italian ryegrass control with chlorsulfuron (71 to 94%) and flufenacet + metribuzin (84 to 96%). Italian ryegrass control with pendimethalin applied PRE or delayed preemergence (DPRE) was variable (0 to 85%). Postemergence control of Italian ryegrass was good with pinoxaden, mesosulfuron, flufenacet + metribuzin, and chlorsulfuron + flucarbazone (>80%). Timing of application and herbicide treatment had no effect upon wheat yield, except for diclofop and pendimethalin treatments where Italian ryegrass was not controlled. Pinoxaden is in the phenylpyrazolin herbicide family which offers control of Italian ryegrass but is not toxic to wheat. Pinoxaden has only been on the market for three years yet several wheat producers have suspected resistance in Italian ryegrass biotypes. An experiment was conducted to identify Italian ryegrass biotypes resistant to pinoxaden and to determine the mechanism of resistance using derived Cleaved Amplified Polymorphic Sequence (dCAPS) methods. Two populations were found resistant to pinoxaden, one from the state of Washington (R2) and the other from North Carolina (R1). The substitution of isoleucine by leucine at the 1781 ACCase residue was identified in the R1 biotype but not in the R2. The NC1 biotype is the first known pinoxaden resistant Italian ryegrass population to be documented having the 1781 target-site mutation.