All these threads about twin knife drills and the thing I noticed is everyone has to heavy harrow.
20 years ago the principles of zero till were to leave the surface undisturbed to not give weeds a seed bed and to maintain the trash on the surface to protect the soil. Now it's somehow become convention to drag straw around and bury weed seeds so they grow in the spring.
Manufacturers come out with these drills that are supposed to be so wonderful because you can go wider or buy less openers. But where are the savings going? To buy heavy harrows, diesel fuel and hours on the tractor to pull them?
I don't get it. It seems contradictory to me to claim savings are made on the drill when another operation is required.
Is this the new min till? Instead of hitting the field with a culivator you go out with the harrows instead?
Or have the principles of zero till evolved where it's ok to scratch the surface?
20 years ago the principles of zero till were to leave the surface undisturbed to not give weeds a seed bed and to maintain the trash on the surface to protect the soil. Now it's somehow become convention to drag straw around and bury weed seeds so they grow in the spring.
Manufacturers come out with these drills that are supposed to be so wonderful because you can go wider or buy less openers. But where are the savings going? To buy heavy harrows, diesel fuel and hours on the tractor to pull them?
I don't get it. It seems contradictory to me to claim savings are made on the drill when another operation is required.
Is this the new min till? Instead of hitting the field with a culivator you go out with the harrows instead?
Or have the principles of zero till evolved where it's ok to scratch the surface?