Muller is increasing its milk price at the start of September.
First Milk has announced plans to change the way it pays farmers for their milk from the start of next month.
The main milk buyer in the north and north-east is to reduce its milk price on April 1.
Dairy farmers supplying First Milk will incur a 1p a litre price reduction from the start of next month.
Farming unions have arranged a meeting with milk processor Muller over its recent announcement of a 1.5p a litre price cut for its non-aligned suppliers from January 2018.
Muller, the main milk buyer in the north and north-east, has slashed the price it will pay to farmers from January by 1.5p per litre.
The main milk buyer in the north and north-east has announced plans to allow farmers to fix their milk price for 12 months ahead.
NFU Scotland has called on milk buyers to deliver stability to Scottish dairy farmers.
Dairy farmers supplying Arla will receive a milk price increase on January 1.
Dairy farmers in Aberdeenshire and Angus were dealt another bitter blow with news their milk buyer is cutting its milk price again on June 1.
About 50 Dumfries and Galloway Farmers (plus a cow) gathered outside Morrisons Supermarket in Dumfries last night, to make a peaceful protest about the price they are paid by supermarkets for their milk.
Dairy farmers will soon be out blockading milk processing plants and supermarket depots following the latest round of milk price cuts.
Muller Wiseman will cut the price it pays farmers for their milk by 1.9p to 27.1p/litre from November 1.