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Showing 1 to 14 of 14 for “"horseweed"”.
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Evaluating cover crops and herbicides for horseweed and Palmer amaranth management
Horseweed and Palmer amaranth are common weeds in Kansas that compete against many row crops. Horseweed can emerge in different seasons depending on the year. Palmer amaranth emerges from spring throughout the summer months and has a rapid growth rate with higher temperatures. Three separate …
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Resistance to Als-Inhibiting Herbicides in Common Ragweed, Foxtail and Horseweed
… to develop a marker to assess the genotype of horseweed at codons encoding amino acid position 197. In this way we have found an effective approach to confirm the hybridization of horseweed biotypes by applying a PCR-based molecular marker. This marker is being used in ongoing studies to …
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The Role Of Soil Microorganisms In The Resistance Of Giant Ragweed, Horseweed, And Common Lambsquarters To Glyphosate
… States: giant ragweed (Ambrosia trifida L.), horseweed [(Conyza canadensis (L.) Cronq.], and common lambsquarters (Chenopodium album L.). Through a series of greenhouse and lab experiments we determined that root colonization by soil microorganisms increased the activity of glyphosate in …
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Herbicide resistant weeds in Missouri : sources and solutions
… study collected seed from 112 separate horseweed populations d from infested fields throughout Missouri just prior to soybean harvest in 2015 and 2016. A discriminating dose that represented twice the recommended field use rate of glyphosate, glufosinate, 2,4-D, dicamba, and cloransulam …
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Rapeseed (Brassica napus L.) Termination and Integration of Halauxifen into Virginia Cotton (Gossypium hirsutum L.) Production
… Group 4 herbicide marketed for preplant burndown horseweed (Conyza canadensis L.) control. Previous research indicates that halauxifen effectively controls glyphosate-resistant horseweed. However, little is known about control of other common winter annual weeds by halauxifen. Results indicate …
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THE INFLUENCE OF CARRIER WATER QUALITY, COAPPLIED FOLIAR FERTILIZER, AND WATER CONDITIONING ADJUVANT ON HERBICIDE EFFICACY
… on giant ragweed (Ambrosia trifida L.), horseweed [(Conyza canadensis (L.) Cronq.], Palmer amaranth (Amaranthus palmeri S. Wats.), and pitted morningglory (Ipomoea lacunosa L.). When considering spray solution temperature, premixed dicamba plus glyphosate efficacy was reduced at 5 C …
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Evaluation of herbicides for no-till corn establishment
… and perennial broadleaf weeds, including horseweed (Conyza canadensis), buckhorn plantain (Plantago lanceolata), field bindweed (Convolvulus arvensis), curly dock (Rumex crispus) and wild mustard (Sinapis arvensis). All four non-selective herbicides provided good overall weed control. The …
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High Residue Cover Crops for Annual Weed Suppression in Corn and Soybean Production and Potential for Hairy Vetch (Vicia villosa) to be Weedy
… barrier. Experiments were implemented to monitor horseweed suppression from different cover crops as well as two fall-applied residual herbicide treatments. Results suggest that cover crops, other than forage radish in monoculture, can suppress horseweed more consistently than flumioxazin + …
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Herbicide evaluation for broadleaf weed control in direct-seeded broccoli
… at 2.02 kg/ha provided excellent control of horseweed, and greater than 70% control of prickly sida, common ragweed and common lambsquarters. All rates of pyridate controlled common pigweed. Applications of BAS 514 at 0.14 to 0.56 kg/ha provided 88 to 100% control of horseweed and 76 to 82% …
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Key To Microscopic Fragments of Plant Tissue in Prairie Dog Stomachs and Food Habits of Prairie Dogs in South Dakota
… prairie dogweed (Dyssodia papposa), and horseweed (Conyza ramosissima). Results of this study did not differ greatly from other studies except that buffalograss comprised the greatest percentage of the stomach contents.
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Herbicide combinations for establishing no-till soybeans (Glycine max) with an emphasis on the use of chlorimuron
… acid] were the most effective herbicides for horseweed (Conyza canadensis (L.)Cronq.) control prior to establishing full-season no-till soybeans (Glycine max (L.)Merr.). In greenhouse experiments, emergence of tobacco (Nicotiana tabacum L.) seedlings was severely inhibited by all …
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Cover crop management strategies for driver weeds in Kansas
… where winter annual weed species such as horseweed (Erigeron canadensis L.), common chickweed (Stellaria media (L.) Vill.), and henbit (Lamium amplexicaule L.) were dominant prior to spring planting, grazing at 1.83 and 3.5 AU ha⁻¹ respectively did not influence weed suppression. These …
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Field, greenhouse, and laboratory studies on the efficacy and action of the herbicides SC-0051 and SC-0774
… L.), common ragweed (Ambrosia artemisiifolia L.) horseweed (Conyza canadensis (L.) Cronq.), common chickweed (Stellaria media (L.) Vill. and was safe to corn. SC-0051 did not control smooth pigweed (Amaranthus hybridus L.) or giant foxtail (Setaria faberi Herrm.). SC-0774 effectively controlled …
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Conyza bonariensis glyphosate tolerance as affected by origin temperature and growth stage
… Cape. Glyphosate resistant Conyza canadensis (horseweed fleabane) reportedly becomes sensitive at low temperatures (below 12 oC). If the resistance mechanism is vacuolar sequestration, low temperatures will prevent glyphosate to be translocated into the vacuole. Tank mixtures with foliar …