This was historically a significant weed of European grain crops, but largely disappeared from its native range due to the advent of herbicides, improvements to seed cleaning technology, and the shift to winter wheat. Northern Journal of Applied Forestry 17(3) 100–109. F ive Years of Vegetation Succession Following Vegetation Management Treatments in a Jack Pine Ecosystem. Herbicide Effects in Connecticut Vegetation, Ecology 30(2) 113-270.ĭouglas G. 2,4-D Effects in Connecticut Vegetation, Ecology 29(3)382-386.įrank E. Management of Spreading Dogbane (Apocynum androsaemifolium) in Wild Blueberry Fields. įire Effects Information Systems entry for spreading dogbane. Ohio State University Perennial and Biennial Weed Guide: Hemp Dogbane. University of Maryland Extension Toxic Plant Profile: Milkweed and Dogbane: USDA Plants Database: spreading dogbane page. Native Plant Trust’s Go Botany online plant key: In a forest setting, aerial application of glyphosate did not control spreading dogbane (Pitt et al 2000). In an early experiment from the 1940s, dogbane was partially susceptible to 2,4 D (Egler 1947). Glyphosate spot sprays worked better than hand pulling, and wiping with glyphosate was also effective (Wu and Boyd, 2012). In blueberry fields, nicosulfuron mixed with surfactant suppressed spreading dogbane (>60%), and dicamba spot sprays were over 80% effective. Management: Management information for this species in agricultural settings is sparse most resources discussed it in the context of a native wildflower/shrub. There is no specific information on the toxicity of this species to livestock. This toxicity persists when the plant is dried as well as when fresh. Toxicity: Dogbanes are reported to be toxic to livestock, containing a compound that interferes with heart function. Inside the pods are many small seeds with fluffy tufts, much like milkweed or swallowwort seeds. Fruit are a long, narrow pod up to 11cm (over 4 inches) long each flower produces two seed pods. Flowers can be white as were seen in western NY, but can also be pink or white with pink striping. Flowers are found at the ends of branches.įlowers/Fruit: Flowers are bell-shaped with 5 petals that are fused to form the bell and then curl outwards. Mature Plant: 0.6m (2 feet) tall, although some sources say 2-5′, with branching reddish stems. They are arranged opposite each other on the branch. Leaves: Leaves are oval, 4-6cm (around two inches long), with smooth edges and pinnate veination. This perennial plant is found in open, dry areas and in disturbed habitats throughout New York and most of the US and Canada. Spreading dogbane, Apocynum androsaemifolium, is in the same family as milkweeds and swallowworts, and the same genus as hemp dogbane. He recently ran across this plant in a hay field that had not been worked for a few years. Josh Putman is Cornell Cooperative Extension’s SWNY Dairy, Livestock & Field Crops representative. If you have any additional questions about late season soybean weed control, contact your local Cornell Cooperative Extension office. Unfortunately, none of these are very good at controlling common lambsquarters. These are all selective, contact broadleaf herbicides. Cobra can be applied through R6 (full seed) or 45 days before harvest, Resource 60 days before harvest and Basagran 30 days before harvest. If the soybeans are at R3 (a pod 3/16” long found at one of the first four uppermost nodes) Cobra, Resource and Basagran are the options that are left. Once the soybeans have reached the R3 (beginning pod) growth stage these products are no longer an option. Enlist One and Enlist Duo can also be applied throughout the R2 growth stage in Enlist or E3 soybeans. Roundup or glyphosate can be applied through the R2 (full flowering) growth stage on Roundup Ready or glyphosate tolerant soybeans. If you still have some weeds that are 6 inches tall or less there is a better chance to control them. Spraying very tall weeds usually provides unsatisfactory weed control. Let me start out by saying that if you have waist high weeds in your soybeans the damage is done and most, if not all, herbicide applications will be a form of “revenge spraying”. Lesser celandine: Spring garden and lawn invaderĪ very popular question has been “What can I spray on my soybeans to control large weeds that weren’t controlled earlier in the season?”.New Penn State resource for spring weed control in grass hay and pastures.Late postemergence herbicide options for soybeans.Fall Weed Seeds and Equipment Clean-Out Article.Toxicity Concerns For Forage After Frost.Ecoogical Weed Management Book Published.No-till Spring Weeds: Penn State article.Grass-like Plants Homepage Toggle the sub-menu.Common Agricultural Weeds & Management Toggle the sub-menu.
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