so far this week i have drilled wheat with thousand grain weights between 42 to 64 now to achieve a seed rate of 300 seeds per meter i have had to sow at rates of 125kg ha up to 190kg ha . No adjustment is made for this when buying seed it simple comes in 500kg bags but i've been thinking at £400 a ton using these seed rates to get my 300 seeds a meter the cost per acre comes in at between £20 and £30.76p quiet a differance perhaps seed should be sold in ha sized bags (as is the case with oilseed rape) so we know the cost per acre and also dont run out of seed when the stuff turns up with a very high tgw .