bulrush [ Bolboschoenus maritimus (L.) Palla], pigmy arrowhead ( Sagittaria pygmaea Miq.), and threeleaf arrowhead ( Sagittaria trifolia L.) under flooded conditions. Penoxsulam is an ALS inhibitor used for broadleaf weed control in managed turfgrass
ppb. Penoxsulam is labeled for postemergence weed control in warm- and cool-season turf and in dry-seeded or water-seeded rice. Penoxsulam is a triazolopyrimidine sulfonamide and also acts as an acetolactate synthase (ALS) inhibitor, which interferes
included indaziflam alone (0.065 lb/acre), penoxsulam/oxyfluorfen (0.031 + 1.47 lb/acre), and pendimethalin alone (3.8 lb/acre). The following set of treatments resulted in less than 61% control (mean over all trials), including flumioxazin + pendimethalin
the nontreated at 35 and 56 DAT; all had ≥ 67% cover and ≥ 90% cover, respectively ( Table 2 ). At the Manhattan site, tall fescue visual cover was reduced in penoxsulam + sulfentrazone + 2,4-D + dicamba-treated plots compared with nontreated
’ peach rootstock in nursery experiments near Yuba City, CA in 2008. 2009–10. A trial was conducted at a nursery near Oakdale, CA to evaluate nursery crop safety with several unregistered herbicides including rimsulfuron, penoxsulam, foramsulfuron, and
Selective broadleaf weed control is a major economic issue facing commercial landscapers and homeowners alike. Minimal selective post-emergent weed research has been successful in controlling landscape weeds. The objectives of this experiment were to determine the efficacy of seven selective broadleaf herbicides [nicosulfuron (0.66 oz/acre), flumioxazin (8 oz/acre), penoxsulam (2.3 fl oz/acre), bensulfuron (1.66 oz/acre), glyphosate (1% by volume), sulfentrazone (8 fl oz/acre), trifloxysulfuron (0.56 oz/acre) and the control] and to determine the ornamental phytotoxicity on three groundcover species (Liriope muscari, Ophiopogon japonicus, and Trachelospermum asiaticum). A RCBD design was used with five blocks. Each block was split establishing either mulched or bare soil plots (nonmulched). The ground-covers were established three months before herbicide application. On 29 June 2005, four weed species were evenly seeded into the blocks with one hundred seeds each of Sesbania exaltata, Ipomea hederacea, Amaranthus retroflexus, and Euphorbia maculata. Herbicides were applied using a CO2 backpack type sprayer on 6 Sept. 2005. Plant and weed control data were taken to evaluate phytotoxicity and efficacy at 0, 1, 7, 14, and 28 DAT. On 27 Oct. 2005, weeds were harvested from each plot and dried for a minimum of 48 h and weighed. No significant differences in phytotoxicity were observed on either Liriope muscari or Trachelospermum asiaticum. However, there was a significant increase in phytotoxicity exhibited by the Ophiopogon japonicus treated with sulfentrazone compared to all of the other herbicides. Glyphosate demonstrated the best overall control of all broadleaf weeds except Sesbania, while trifloxysulfuron showed the best control of Sesbania. There were no significant differences in herbicide efficacy between the mulched and nonmulched plots. Further research is being done to measure the effects of herbicide efficacy and phytotoxicity in 2006.
-mimicking herbicides 2,4-D + dicamba + mecoprop, 2,4-D + dicamba + penoxsulam + sulfentrazone, and 2,4-D + mecoprop + dicamba + carfentrazone-ethyl controlled wild garlic greater than the nontreated (88%, 69%, and 82%, respectively) at this time. However, when assessed
(DAT) ( Kopec et al., 2004a ). Single applications of metsulfuron at 0.021 and 0.042 kg a.i./ha exhibited 99% khakiweed control 40 DAT ( Kopec et al., 2004a ). Penoxsulam at 0.1 kg a.i./ha exhibited 69% khakiweed control 40 d after initial treatment
Adaptation of a PAM-fluorometer for remote sensing of chlorophyll fluorescence Photosyn. Res. 68 113 120 Pearson, B.A. Scott, R.C. Carey V.F. III 2008 Urea ammonium nitrate effects on bispyribac and penoxsulam efficacy Weed Technol. 22 597 601 Turgeon, A
. 699–704. In: Lemaire, F. (ed.). Infestation in red fescue turf. Proc. 5th Inter. Turf. Res. Conf., Avignon, France Kopec, D.M. Gilbert, J.J. Pessarakli, M. 2004 Penoxsulam as a potential post-emergence for khakiweed ( Alternanthera pungens