M50

A soluble concentrate containing 500 g/L (44.25% w/w) MCPA as the dimethylamine salt.

A selective herbicide for the control of many broad-leaved weeds in cereals and established grassland.

DIRECTIONS FOR USE 
Spring wheat and winter and spring barley, oats and rye.
Application
Rate: 1.4 to 3.3 L/ha (see weed susceptibility table) Maximum total dose: 3.3 L/ha For all cereals above apply in the spring before 1st node detectable stages (GS 31).
WINTER BARLEY, OATS AND RYE: Spray in the spring from the leaf sheath erect stage (GS 30). 
SPRING WHEAT, BARLEY AND RYE: Spray after the crop has developed five fully expanded leaves (GS 15).
SPRING OATS: Spray after the crop has developed one fully expanded leaf (GS 11).

WINTER WHEAT
Weeds: Black mustard, Charlock, Fat-hen, Field Penny-cress, Treacle Mustard, White mustard, Corn Buttercup, Runch (Wild Radish), Shepherd’s-purse, Volunteer oilseed rape, Common Fumitory, Common Hemp-nettle, Common Orache, Small Nettle, Wild Cabbage, Common Poppy, Field Gromwell, Smooth Sow-thistle, Creeping Thistle, Black Bindweed, Common chickweed, Corn chamomile, Corn spurrey, Field pansy, Groundsel, Knotgrass, Pale Persicaria, Redshank, Scentless mayweed, Speedwells, Creeping Buttercup, Hoary Cress, Shepherd’s-needle, Tares (Vetches), Perennial Sow-thistle.
Rate: 3.3l/ha
Critical comments: maximum total dose - 3.3 L product/ha/crop. Latest timing: before 3rd node detectable (GS 33).

SPRING WHEAT, WINTER and SPRING BARLEY, RYE, OATS
Weeds: Black mustard, Charlock, Fat-hen, Field Penny-cress, Treacle Mustard, White mustard, Corn Buttercup, Runch (Wild Radish), Shepherd’s-purse, Volunteer oilseed rape, Common Fumitory, Common Hemp-nettle, Common Orache, Small Nettle, Wild Cabbage, Common Poppy, Field Gromwell, Smooth Sow-thistle, Creeping Thistle, Black Bindweed, Common chickweed, Corn chamomile, Corn spurrey, Field pansy, Groundsel, Knotgrass, Pale Persicaria, Redshank, Scentless mayweed, Speedwells, Creeping Buttercup, Hoary Cress, Shepherd’s-needle, Tares (Vetches), Perennial Sow-thistle.
Rate: 3.3lha.
Critical comments: maximum total dose - 3.3 L product/ha/crop. Latest timing: before 3rd node detectable (GS 31).

GRASSLAND
Weeds: Greater Plantain, Ribwort Plantain, Autumn Hawkbit, Cat’s Ear, Common Knapweed, Compact Rush, Creeping Buttercup, Creeping Thistle, Common Daisy, Common Ragwort, Hoary Cress, Meadow Buttercup, Self Heal, Soft Rush, Spear Thistle, Bulbous Buttercup, Colt’s Foot, Common Nettle, Common Sorrel, Curled Dock, Dandelion, Dwarf Thistle, Hard Rush, Horsetails, Meadowsweet, Perennial Sow Thistle, Sheep’s Sorrel Yarrow.
Rate: 3.3l/ha
Critical comments: maximum total dose - 6.6 L product/ha/year.

GRASS SEED CROP
Weeds: Greater Plantain, Ribwort Plantain, Autumn Hawkbit, Cat’s Ear, Common Knapweed, Compact Rush, Creeping Buttercup, Creeping Thistle, Common Daisy, Common Ragwort, Hoary Cress, Meadow Buttercup, Self Heal, Soft Rush, Spear Thistle, Bulbous Buttercup, Colt’s Foot, Common Nettle, Common Sorrel, Curled Dock, Dandelion, Dwarf Thistle, Hard Rush, Horsetails, Meadowsweet, Perennial Sow Thistle, Sheep’s Sorrel Yarrow.
Rate: 3.2l/ha
Critical comments: maximum total dose - 3.2 L product/ha/year. Latest timing: 5 weeks before heading.

Application under very hot conditions at later timings can cause ear damage if the crop comes under stress after application. Barley is particularly subject to malformation and particular attention must be paid to the correct growth stage if this crop is intended for malting. All varieties of spring wheat, winter and spring barley, oats and rye may be treated. Apply in 200 - 400 L water/ha.

Undersown cereals 
Do not apply to cereals undersown with lucerne, peas or safoin.
Red Clover 
Application rate: 1.4 L product/ha.
Maximum total dose: 1.4 L product/ha. 
Application should be made when the red clover has at least two trifoliate leaves (GS 12), and the cereal crop is at the correct growth stage, as listed above. Only apply if the weeds canopy is dense and covers most of the clover seedlings. Some damage to red clover must be expected, but this will normally be out-grown. Do not apply if white clover is present.
Grasses 
Application rate: 2.7 L product/ha.
Maximum total dose: 2.7 L product/ha. 
Application should be made when the grasses have begun to tiller, and the cereal crop is at the correct growth stage, as listed above. Apply in 200 - 400 L water/ha.

Established Grassland
Application rate: 2.7 to 3.3 L product/ha. 
Maximum total dose: 6.6 L product/ha. 
Use on established grassland and leys not less than 1 year old. Apply M 50 in spring and summer when growing conditions are favourable. Spray grass for hay or silage 3-4 weeks before cutting. Clover may be checked but recovers by the following Spring. Follow-up applications may also be needed where new seedling weeds appear. An interval of 4-6 weeks should elapse between successive applications if weeds persist. A top dressing ten days before treatment is recommended to assist kill of weeds and subsequent recovery of the sward. Annual weed species will be best controlled if spraying is done while the majority of weeds are seedlings. Perennial weeds should be sprayed during their period of maximum growth, usually when the flower buds are beginning to form. The response of perennial weeds to treatments are often variable with only the aerial parts killed, though often suppression will occur. The recovery of the weeds will be reduced if the grass is growing vigorously at the time of treatment. Apply in 200 - 400 L water/ha.

Grass seed crop
Application rate: 3.2 L product/ha. 
Maximum total dose: 3.2 L product/ha. The safe period for treatment occurs when the grasses have at least four leaves and have begun to tiller but at least five weeks preceding ear emergence. The best time varies according to the species and strain of grass concerned. Do not apply more than 3.2 L/ha of M 50. Apply in 200 - 400 L water/ha.

MIXING AND SPRAYING 
Half-fill the tank with clean water and add the required quantity of M50, and add the remainder of the clean water with gently agitation which should continue until the contents are thoroughly mixed. Triple rinse containers with water and add washing to the spray tank.

COMPATIBILITY
M50 can be tank-mixed with other pesticides, please consult your Nufarm distributor or Nufarm UK Limited.

RESISTANCE MANAGEMENT
When herbicides with the same mode of action are used repeatedly over several years in the same field, selection of resistant biotypes can take place. These can propagate and may become dominating. A weed species is considered to be resistant to a herbicide if it survives a correctly applied treatment at the recommended dose. A strategy for preventing and managing such resistance should be adopted. This should include integrating herbicides with a programme of cultural control measures.