why plough the grass up just spray off and notill
There are as many reasons why a farmer would choose to plough grass rather than spray it off, as there are farmers.
Organic uses just as much energy if not more, just not on buying in and applying chemical fert and pesticides.
It trades them for more diesel and machinery steel.
Again, there are far too many variables for such a generalization to be made.
Neither of you have addressed the question I asked.
- On the 'less carbon released'. How many Ha of arable land need to be in DD, and for how many years, to compensate for the carbon released by ploughing up 1 Ha of PP ?
Because if the main 'public good' being claimed for the DD sub is carbon, surely these numbers must have been subject to extensive study ?