o Modelling the effects of a mycoherbicide with a hypothetical 50% kill of giant buttercup suggests that profitability improves by $485/ha. Once you have tried all the steps above to kill buttercup weeds, and only if they are still persistent, it is time to consider chemical warfare. Do not seed clover for six weeks after herbicide application. Hedge mustard (Sisymbrium officinale) is a widespread common annual herb, found throughout New Zealand in pasture, cultivated land, gardens and road-sides. Maintain the same cow numbers but feed them more to maximise efficiency. Controls most species of thistles, buttercup and many other flatweeds in pasture. Kill Buttercup Weeds Chemically. This will mean you’d need a contractor to come in to cultivate and later undersow pasture seed (undersowing is vastly superior to over-sowing). To get rid of buttercups in your pasture or hayfield is a two step process; spray to kill the existing buttercups and improve the conditions that favor grass production. Lower the acidity of soil, increase percolation and fertilize for cultural buttercup control. For optimum results apply a herbicide in the early spring (February - March) before flowers are observed, when buttercup plants are still small and actively growing. ... • Herbicides kill the weeds, but may kill your legumes too . Harmony ® 50SG is a soluble granule to be mixed with water and applied as a foliar spray for control of buttercups and docks in pasture and cereals. It does not pay to rely solely on herbicides to control pasture weeds. Giant Buttercup Botanical name: Ranunculus acris Family name: Ranunculaceae Overview. Best results are obtained in the spring when weeds are actively growing within a vigorous, competitive pasture or … For annual species such as hairy buttercup a herbicide application is best made from late autumn to late winter. buttercup, chickweed, henbit, purple deadnettle and cressleaf groundsel. ... agreement with Dairy NZ, ... Utilise the extra pasture production when there is no giant buttercup in the pasture. 20L 200L Baton® Sprinter® Ammo®Max Synergy ™ 2,4-D Ester 680 Active ingredient: 680 g/litre 2,4-D as the ethylhexyl ester in the form of an emulsifiable concentrate. Buttercups tend to be a problem in moist dairy pastures. It can also be used for conservation tillage. Donaghys Grunt 600 Glyphosate is the strongest fully surfactant loaded glyphosate in the world. Controls Wide range of weeds in new and mature pasture. This rate of 2,4-D will kill all red clover, but will do minimal damage to established white clover. Mow your thistles. Buttercup likes nutrient poor, compact soil with a low pH. Henbit. Options Available • Fertility/Fertilization • Multispecies grazing • Mowing/clipping ... the grass species in pastures For selective control of Buttercup in grassy conditions such as pastures and hayfields, use the herbicide MCP Amine plus an adjuvant (wetting agent) such as Class Act. It grows in a rosette Read more Read less. Non Volatile – Low Odour. Controlling buttercup and other pasture weeds Timing is the key University of Tennessee Extension forage specialists say timing is key to pasture management. 4. 20L 200L It is a non-residual herbicide for non-selective control of most annual and perennial weeds and a wide range of brush weeds in agriculture, horticulture, forestry and industrial areas. NZ research shows mowing Californian thistle at specific times of the year is a great way to kill it off. 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