As I was out and about this past week I noticed a lot of people tilling. Wide ranges of tilling methods are used in Washington County from moldboard to no-till. Growing up at home, the moldboard plow was the only method I knew of. Cutting 3, 16” furrows at a time behind our International 666 was quite a process! After a short time at Agriculture College and after discussions with friends of farming families across the state of Ohio, I learned that a moldboard plow is a thing of the past for most.
So why do we plow? For us, we plowed because that’s what grandpa taught us, and that’s what his dad taught him. Traditionally, farmers plowed as an act of disease and pest management in their fields. In the recent past there has been a movement toward no-till and conservation tillage systems in agriculture. Tillage is less desirable these days for many reasons: increased fuel and machinery costs, time, decreases organic matter near the soil surface, and new technology in pest management, just to name a few. But tilling is not bad in all cases.
No-till practices are fast and easy. It helps to build organic matter in soil and reduce soil erosion. It can be challenging in poorly drained soils, which we have plenty of in Washington County. Another big concern we have with no-till is that it forces us to rely on herbicide spray programs for weed control.
Moldboard plows are a great way to control weeds and prepare level seedbed after alfalfa or grass sod. However moldboard plowing can cause significant amounts of soil erosion resulting in a loss of nutrients and leave a hard pan below the soil surface that can be hard for roots to penetrate.
Conservation tillage is using equipment that leaves at least 30% of the soil surface with plant residue after planting. This is done with equipment such as chisel plow, disks, and field cultivators. This method is often faster and takes less fuel than moldboard plowing and though it may not be as effective as the moldboard at weed control, it will help.
After more education on tillage management we made the decision at home to take action and help reduce soil erosion. Last year we purchased a field cultivator and traded our old corn planter in for a no-till corn planter. This past year we spent less than 1/10 of the time we typically spend tilling and planting our ground and we saw an increase in yields. The change for us has been good, but my dad is not quite ready to get rid of the old moldboard yet.