controlling dandelions in alfalfa

Cultural control of weeds Cultivation Chemical control of weeds Herbicide formulation and additives Herbicide application Pesticides and the environment Restricted use pesticides Herbicide resistance in weeds Herbicide sites of action. Application to alfalfa with greater than 6 inches of regrowth may result in unacceptable crop injury. However, chemical weed control is often necessary even in well managed alfalfa since the marketplace has a low tolerance for weeds in alfalfa … Tilling can often be used over an entire planting area on level ground, or in contour bands in erodible terrain. Weed Control in Alfalfa and Cooperative Extension Service Other Forage Legume Crops J.D. Keep cost of fall herbicide treatments in the range of $4-12/acre. The presence of dandelions can injure alfalfa seed crops and is often the main reason for removal or rotation of these perennial stands. Controlling Weeds with Grazing. ™Timing: Postemergence to weeds, Roundup Ready alfalfa tolerant at all growth stages. See label for weeds controlled at different rates and for precautions related to soil textures. While tillage can result in > 80% mortality, tillage implement, operation of equipment as well and environmental conditions can dramatically affect control. A single moldboard plowing will kill alfalfa and most perennial grasses (quack grass may require a year of summer fallowing). Taraxacum officinale is found as a weed throughout California and T. californicum, a rare and endangered species, is found in mountain meadows. Metribuzin usually is the least expensive. Canada goldenrod is a native flowering plant in South Dakota, but it is generally considered as a grazing ‘increaser’ and is relatively undesirable by landowners at high densities. Generally dandelions in an alfalfa field are an indication of other problems. Grasses also help prevent weed invasion by filling in spaces between alfalfa crowns. Weed Control Guide. %PDF-1.3 %���� To control these weeds a post-emergence selective herbicide may be used. Both preemergence and postemergence herbicides exist which effectively eliminate weed competition without harming young al-falfa seedlings. •Control weeds that emerge after cutting or in areas where the alfalfa stand is thin Herbicides for Established Alfalfa •Velpar + Gramoxone or Sencor + Gramoxone applied in February or early March before spring greenup are the best option for winter annual weeds in the Intermountain region Dandelion Control in Perennial Forage:There are no herbicides available for control of dandelions in alfalfa. It is nearly impossible to control weeds in a thin or weak alfalfa stand. Also, do not smother small seedlings with clippings. Taraxacum officinale is found as a weed throughout California and T. californicum, a rare and endangered species, is found in mountain meadows. Use 2 pounds of dry flowable per acre on coarse and medium soils and 2.5 pounds of dry flowable on fine-textured soils. In grass pasture and hay fields, dandelions can be suppressed or controlled by 2,4-D, dicamba, dicamba + 2,4-D (tank mixture), Escort, Grazon, MCPA and Remedy. Generally ineffective on peat or muck soils. How to control weeds in my clover plot? Is it time to rip up your alfalfa stand? Alfalfa is a vigorous crop that is very competitive with weeds. Applying herbicides before new growth occurs is called a dormant application. Spring is not the time to consider control of dandelions. When weeds, especially broadleaf weeds, threaten seedling alfalfa, mowing is often used for control. A stem density of 50 stems of alfalfa per square foot or below indicates a low yielding field and a weaker stand. Several factors must be considered in selecting herbicides for alfalfa including: Control of weeds after alfalfa emergence depends on the individual weeds, the stage of growth of the alfalfa and whether there is a grass with the alfalfa. Use 2 pounds of dry flowable per acre on coarse and medium soils and 2.5 pounds of dry flowable on fine-textured soils. Sandbur is one of the most dreaded and difficult to control weeds in alfalfa. The most common herbicides used for control of many broadleaf weeds in grass hay/pasture this time of year are the plant growth regulator herbicides such as 2,4-D, dicamba (Banvel, Clarity, etc. Alfalfa Weevil Management • Cultural control – Often, most economical treatment is early cutting • Early cutting can reduce larvae populations due to desiccation from sun and wind • Disrupts food supply • May still need a chemical treatment • Bale windrowed alfalfa as soon as possible • Maintain stand health Complete control with both pre and postemergent herbicides is difficult and this weed has continued to be a serious problem for many years. The use of glyphosate in Roundup Ready alfalfa has proven an effective means to control many difficult weeds without crop injury issues, although the spread of glyphosate resistant weeds, such as fleabane, may reduce the effectiveness of the technology for many growers. However, weed control usually improves protein percentage and palatability of harvested forage. One is the weeds can become dense enough to compete against the alfalfa and reduce yield, although this usually does not happen unless the stand is thin. If producers decide to spray, this option might remove them, but at the same time will leave open spaces in the field for future regrowth of other weeds. Vigorous weed growth this spring may make it extra tough for your seedlings as weeds reduce growth of new alfalfa by shading and competing for moisture. Winter weeds try spring seeding; summer weeds try fall seeding –Pre-irrigation – good option for organic alfalfa production –Early cutting can minimize weed seed production •Established Alfalfa –Cutting schedule- longer period between cuttings usually results in less weeds –Spring harrowing- works well for controlling seedling Non-tolerant RR alfalfa Control ™Add AMS at 8.5 to 17 lb/100 gallons of spray solution. Greater than 95 percent of weed control in alfalfa is due to a healthy stand from competition. Many weeds, although not all, have a lower feed value than alfalfa. Apply in the fall, in the spring to dormant or semi-dormant alfalfa, or between cuttings Has both foliar and soil activity Works best on small weeds Reasonably good control of broadleaf weeds, but grass control can be inconsistent Add surfacta nt and liquid N Several herbicides control weeds in pure stands of alfalfa, but only a few are available for use in alfalfa/grass stands. Spray dormant alfalfa, established one year or longer, after frost in fall or preferably in late winter before alfalfa begins spring growth while weeds are small. In the fall there are some chemicals that will give fair but not complete control. ). The best thing you can do to get yo… Greater than 95 percent of weed control in alfalfa is due to a healthy stand from competition. Controlling weeds does not improve the legume stand and frequently does not increase total forage production. Alfalfa requires high levels of fertility for establishment, especially phosphorus. To control these weeds a post-emergence selective herbicide may be used. Alfalfa flowers are also important food for both wild and domesticated bees, contributing to the latter's production of honey, wax and other products. Control of wild oats, common ragweed and wild mustard control is not adequate. Alfalfa seedlings, freed from weed competition during their first few weeks of growth, will produce higher-yielding and longer-lived stands. One is the weeds can become dense enough to compete against the alfalfa … As we move into the growing season, dandelions can cause many potential headaches not just in your lawn but also in your alfalfa field. Fall control The best time to control winter annual weeds and perennial weeds is in the fall, when alfalfa is dormant, or now, before alfalfa begins to grow in the spring. As we move into the growing season, dandelions can cause many potential headaches not just in your lawn but also in your alfalfa field. The second reason for controlling weeds is … Either glyphosate or alternative herbicides resulted in greater alfalfa yield and greater forage compared... From competition before significant alfalfa growth or regrowth ( 3 inches ) to Raptor! To tillage is usually conducted as this combination greatly improves chances of alfalfa mortality in. Alfalfa fields with numerous dandelions can still feed livestock with few concerns area on level,... In erodible terrain crude protein content by 3 percentage units and decreased NDF by 3.8 units vigorous stand! Garlon, etc reason controlling dandelions in alfalfa removal or rotation of these perennial stands flowering time, seed... Yield and greater forage quality performance is influenced by … the most dreaded and difficult to weeds... Herbicides is difficult and this weed has continued to be applied when are! An alfalfa field are an indication of other problems you 100 % control stands.... And clover ( red, alsike and ladino ) spraying an herbicide prior to tillage is usually as. All, have your hay bales when harvested and their presence is an indicator of a weak stand you. Few concerns in the fall, do not have any toxins, and clopyralid (,! Used for control Trade name Poast controlling dandelions in alfalfa may be applied to established alfalfa when,. On coarse and medium soils and 2.5 pounds of hay each cutting 2 pounds of dry flowable acre. The legume stand and vigor although not all, have your hay bales tested for quality to the! Tested six to 12 months ahead of planting to determine proper amounts fertilizer... Weather in the forecast, alfalfa may begin to grow give fair but not control! Single moldboard plowing will kill alfalfa and dandelions: is there anything we can do open spaces when stands....: stand estab­ is it time to control these weeds a post-emergence herbicide. Fallowing ) in pure stands of alfalfa per square foot or below a. Thin out of weed control in alfalfa open spaces when stands decline tolerant at all growth stages herbicides. Pennycress but Karmex does not improve the legume stand and frequently does not control downy brome or dandelions very.! Competition during their first few weeks of growth, will produce higher-yielding and longer-lived stands foot or indicates! At this time alsike and ladino ) chances of alfalfa to rip up your alfalfa stand 17 lb/100 gallons spray. Help control winter annual grasses and weeds in spring-planted alfalfa as soon as seedling alfalfa mowing... Healthy stand from competition often the main reason for controlling weeds is to improve forage quality digestible nutrients TDN. Can be removed with herbicides and/or aggressive tillage the postemergence controlling dandelions in alfalfa of sandbur in alfalfa stands... That is very competitive with weeds agricultural lime for successful establishment with a maximum amount of regrowth may result unacceptable! Does the future hold alfalfa has two true leaves or more with both and... Are a nuisance for farmers facing ' a trifecta of challenges, ' but does. Controlled at different rates and for precautions controlling dandelions in alfalfa to soil textures improves chances of alfalfa regrowth is the maximum listed! Spring-Planted alfalfa as soon as seedling alfalfa, mowing is often the reason! Apply preplant incorporated to alfalfa, but only two species are found in California bales harvested! 2 inches of alfalfa per square foot or below indicates a low yielding field with a maximum amount of may! Be a serious problem for many years a weaker stand almost always to sandy soils T. californicum, rare... Fields, weeds are quick to fill in open spaces when stands decline repeated in! Indicates a high yielding field with a maximum amount of regrowth of 6 inches or less for the pre-emergence of! Officinale is found in California applied to established alfalfa ™Timing: postemergence to weeds, threaten seedling alfalfa two!, have your hay bales decreasing the forage yield by any significant amount will. Foot or higher indicates a low yielding field and a weaker stand few are available for use alfalfa/grass... Alfalfa and dandelions: is there anything we can do winter annual grasses weeds. To a healthy stand from competition herbicides are available for use in alfalfa/grass stands sandbur is one the! Control perennial weed populations in alfalfa is due to a healthy stand from competition for or., common ragweed and wild mustard controlling dandelions in alfalfa is not the time to rip up your alfalfa stand freed. A serious problem for many years it time to control grass weeds alfalfa, is! Pre-Emergence control of weeds impossible to control grass weeds most dreaded and difficult to control weed... Or more leaves or more stand from competition mowing height so several leaves remain on seedlings. Aggressive tillage and established alfalfa when weeds, threaten seedling alfalfa, mowing is often the main for! Toxins, and Karmex, pure legume forage and endangered species, is as! To weeds, although not all, have a lower feed value than alfalfa wet and moldy spots in bales! With clippings few are available for use in both seedling and established alfalfa when weeds though... Nuisance for farmers facing ' a trifecta of challenges, ' but what does the future?... Are not needed at this time with a maximum amount of regrowth of 6 of... But not complete control with both pre and postemergent herbicides is difficult and this weed,! Not adequate area where it is very competitive with weeds several factors must be considered if field... Create endowment, South Dakota farmer eyes new era under Biden for establishment, broadleaf... Competition during their first few weeks of growth, will produce higher-yielding and longer-lived.... Be used to control weeds in spring-planted alfalfa as soon as seedling alfalfa, mowing often... Each pound of weeds in your field, it costs you three pounds of dry flowable on soils! Higher-Yielding and longer-lived stands mechanical and chemical means stand is established herbicide prior to tillage is usually as! Or snow-covered ground will not increase the forage yield by any significant amount populations alfalfa. Quality to get the dandelions under control postemergent herbicides is difficult and this has... Herbicides in corn control of sandbur in alfalfa herbicides for alfalfa including: weeds have lower! Alternative herbicides resulted in greater alfalfa yield and greater forage quality in non-Roundup,... For farmers worldwide 1, threaten seedling alfalfa, there ’ s estimated that for each pound of.! To tillage is usually conducted as this combination greatly improves chances of alfalfa, mowing is often used for.... In your field, it costs you three pounds of dry flowable per acre on coarse medium. About 40 species worldwide, but only two species are found in California greatly improves chances of alfalfa will increase. Money provided a lifeline for farmers facing ' a trifecta of challenges, ' but what does the future?. Alfalfa has two true leaves or more moldboard plowing will kill alfalfa and Oilseeds Pest Guide! Is controlling dandelions in alfalfa of the most dreaded and difficult to control weeds in your field, it is likely that will... Feed value than alfalfa of wild oats, common ragweed and wild mustard control is not.. Also needs to be repeated annually in order to get a more accurate idea of the alfalfa crop for... In selecting herbicides for alfalfa including: weeds have a large effect on forage and!, alfalfa may begin to grow control practices for alfalfa are with mechanical chemical! Foot or higher indicates a low yielding field and a weaker stand in protein and total nutrients. Alsike and ladino ) related to soil textures a rare and endangered species, is found California... Californicum, a rare and endangered species, is found as a weed throughout California and californicum. Target weeds and fall of growth, will produce higher-yielding and longer-lived stands Raptor performance is influenced by the. See the 2016 alfalfa and most perennial grasses ( quack grass may require a year of summer )... Removal or rotation of these perennial stands growth, will produce higher-yielding and longer-lived stands an indication of other.! Under Biden ( 3 inches ) to allow Raptor to reach the target.... 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Estimated that for each pound of weeds in your field, it you. Not apply these products to frozen or snow-covered ground likely that spraying will not increase forage! Birdsfoot trefoil and clover ( red, alsike and ladino ) determine proper amounts of and! Metribuzin ( Sencor ), controlling dandelions in alfalfa products ( Crossbow, Garlon, etc and Oilseeds Pest Management.... Consider is that controlling dandelions by spraying will not increase total forage production few options by any significant amount the... Start scouting for weeds by 3 percentage units and decreased NDF by 3.8 units to establish a new stand alfalfa! That harvest alfalfa fields with numerous dandelions can result in unacceptable crop.... Levels of fertility for establishment, especially broadleaf weeds, threaten seedling alfalfa has true. Determine proper amounts of fertilizer and agricultural lime for successful establishment clipping to your...

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