Million dollar question right? No preharvest interval (PHI) stated. Control of dandelion may not necessarily improve the quality of hay, but it may be of some value in reducing the time necessary to dry the hay, since dandelion dries more slowly than alfalfa. Several herbicides can help control winter annual grasses and weeds in alfalfa. These are Poast and Select/Prism. Now that alfalfa is being planted, start scouting for weeds. The best thing you can do to get yo… Buctril also needs to be applied when temperatures are below 80ºF. Apply Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the spring. 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 “We suggest around flowering time, or seed head formation,” said Lingenfelter. Glyphosate. Both preemergence and postemergence herbicides exist which effectively eliminate weed competition without harming young al-falfa seedlings. Controlling weeds There are three reasons for controlling weeds in alfalfa. While it may not be worthwhile to control dandelions with an herbicide, stem density should be one major aspect to determine overall alfalfa production. ). Weed Control Guide. The herbicides that are currently available can effectively control most weeds in established alfalfa without harming the crop, but removing weeds from a heavily infested, poor stand of alfalfa … Dandelions are important to control during the establishment of a forage stand because their broad leaves will cover the ground and won’t let forage seedlings gain strength and good vigor during the first part of the growing season. The genus Taraxacum consists of about 40 species worldwide, but only two species are found in California. 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. ™Add AMS at 8.5 to 17 lb/100 gallons of spray solution. A number of herbicides are available for use in both seedling and established alfalfa. Several factors must be considered in selecting herbicides for alfalfa including: However, they can cause wet and moldy spots in hay bales when harvested and their presence is an indicator of a weak stand. The second reason for controlling weeds is … Weed Control in Established Alfalfa Dandelion Control in Perennial Forage:There are no herbicides available for control of dandelions in alfalfa. See label for weeds controlled at different rates and for precautions related to soil textures. Weed control in alfalfa fields must begin long before the stand starts to thin out. The presence of dandelions can often injure alfalfa seed crops and is often the main reason for removal or rotation of these perennial stands. It is nearly impossible to control weeds in a thin or weak alfalfa stand. Weed control in alfalfa fields must begin long before the stand starts to thin out. Sethoxydim (Trade name Poast) may be used to control grass weeds. Both preemergence and postemergence herbicides exist which effectively eliminate weed competition without harming young al-falfa seedlings. Tips for Controlling Dandelions in Your Field. Alfalfa is a vigorous crop that is very competitive with weeds. 2,4-DB (Trade names Butoxone, Butyrac) alone or mixed with bromoxynil (Trade Name Buctril) are two herbicides that have shown promise in controlling small broadleaf weeds. Weeds affect alfalfa during two distinct periods: stand estab­ The genus Taraxacum consists of about 40 species worldwide, but only two species are found in California. A stem density of 55 stems of alfalfa per square foot or higher indicates a high yielding field with a good stand and vigor. Alfalfa requires high levels of fertility for establishment, especially phosphorus. 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. Alfalfa is a vigorous crop that is very competitive with weeds. Introduction. ™Timing: Postemergence to weeds, Roundup Ready alfalfa tolerant at all growth stages. Sethoxydim (Trade name Poast) may be used to control grass weeds. When you see those yellow flowers you start to look for some method of controlling this weed. Controlling weeds with either glyphosate or alternative herbicides resulted in greater alfalfa yield and greater forage quality compared with not using herbicides. Weeds have a large effect on forage quality. For chemical options see the 2016 Alfalfa and Oilseeds Pest Management Guide. Tilling can often be used over an entire planting area on level ground, or in contour bands in erodible terrain. It is important to control weeds in spring-planted alfalfa as soon as seedling alfalfa has two true leaves or more. While it may not be worthwhile to control dandelions with an herbicide, stem density should be one major aspect to determine overall alfalfa production. 2,4-DB (Trade names Butoxone, Butyrac) alone or mixed with bromoxynil (Trade Name Buctril) are two herbicides that have shown promise in controlling small broadleaf weeds. Weed control: control alfalfa weeds in late summer and fall. •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 It’s estimated that for each pound of weeds in your field, it costs you three pounds of hay each cutting. When the stand starts to reach the end of its useful life, or in the event of a disturbance in the field, dandelions and other weeds will move in. Dandelions come close to equaling alfalfa in protein and total digestible nutrients (TDN). NDSU livestock judging alumni create endowment, South Dakota farmer eyes new era under Biden. Keep cost of fall herbicide treatments in the range of $4-12/acre. Something else to consider is that controlling dandelions by spraying will not increase the forage yield by any significant amount. Is it time to rip up your alfalfa stand? Table 1A- Weed response to soil-applied herbicides in corn Apply preplant incorporated to alfalfa, birdsfoot trefoil and clover (red, alsike and ladino). How to control weeds in my clover plot? Alfalfa can be removed with herbicides and/or aggressive tillage. Application to alfalfa with greater than 6 inches of regrowth may result in unacceptable crop injury. Roundup PowerMAX Apply preplant incorporated to alfalfa, birdsfoot trefoil and clover (red, alsike and ladino). Million dollar question right? Application guidelines. Generally ineffective on peat or muck soils. As we move into the growing season, dandelions can cause many potential headaches not just in your lawn but also in your alfalfa field. 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. To control these weeds a post-emergence selective herbicide may be used. Control of dandelion may not necessarily improve the quality of hay, but it may be of some value in reducing the time necessary to dry the hay, since dandelion dries more slowly than alfalfa. Timely mowing can reduce the competi- tion and spread of many weeds in alfalfa. Grasses also help prevent weed invasion by filling in spaces between alfalfa crowns. With most annual weeds, though, you have a few options. Dandelion Control in Perennial Forage:There are no herbicides available for control of dandelions in alfalfa. There are three reasons for controlling weeds in alfalfa. Weed Control in Established Alfalfa While tillage can result in > 80% mortality, tillage implement, operation of equipment as well and environmental conditions can dramatically affect control. Spraying may be considered if the field is in an area where it is very tough to establish a new stand of alfalfa. Applying herbicides before new growth occurs is called a dormant application. Tilling. In older alfalfa fields, weeds are quick to fill in open spaces when stands decline. Table 1A- Weed response to soil-applied herbicides in corn The herbicides that are currently available can effectively control most weeds in established alfalfa without harming the crop, but removing weeds from a heavily infested, poor stand of alfalfa … 6 inches or less for the pre-emergence control of wild oats, controlling dandelions in alfalfa and! 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