Author: Jennifer Mansfield

12 Nov 2018

Lots of Plots

Lots of Plots

Dr. Pat Keyser from University of Tennessee made his second trip to Greenacres last week.  The purpose for this visit was to start laying out the research plots on the 10-acres that we set aside in Lewis Township, for the purpose of our research collaboration.  The study has 8 treatment levels with 4 replicates for a total of 32 different plots – all randomized.  In other words, it’s a fairly complex plot design to lay out across 10 acres (see picture).

To speed up the process, Jennifer and I decided to get a head start on laying out the plots while we were waiting for Dr. Keyser to arrive.  This was the first field study for either of us at this scale, so for the first several hours it was “one step forward, two steps back”.  I was beginning to question my ability to measure long distances.  Luckily, Dr. Keyser showed up in the nick of time, before we really dug ourselves in a whole – plot set up is old hat for him!

With the sun setting a little earlier these days we were able to get the corners of each plot measured off and marked (the green circles in the photo).  We will return later this week and get the rest of the plots flagged off.  After the plots are laid out we just wait until spring so we can start the planting process, starting with oats.

–Chad B.

16 Oct 2018

Healthy Soil Holds Water

Healthy Soil Holds Water

In addition to testing the soil itself, we collect other types of information.  Water infiltration is a measure of how quickly 1 inch of water will enter the soil.  Metal rings are driven into the ground, water poured into the ring and the timer begins.  Without stable soil aggregates the pores collapse and water will not move into the soil.  Stable soil aggregates (produced by biology) maintain the pore structure and water moves into the soil.  Our newest property in Lewis Township (Brown County, OH) has historically been used for soybean crops.  Many of the areas tested there had standing water in the ring after 30 minutes.  In contrast, some of the pastures in Indian Hill had the inch of water move into the soil in less than 2 minutes.

Soil compaction is another measurement we make on our fields.  High soil compaction negatively impacts root growth and water infiltration.  A penetrometer is the tool we use to measure soil compaction. The tip of the penetrometer is pushed into the ground and the depth at which 300 psi is reached is recorded.  At the Lewis Township site that depth averaged between 11.4 to 16.8 inches.

30 Aug 2018

Chickens Eating Ticks?

Chickens Eating Ticks?

The preliminary results are in for the “ticks and chicks” study.  The tick population was highest in May, which matches peaks typically found in Ohio.  Some of the horses appear to be more susceptible to ticks than others.  There were fewer ticks found on the horses when chickens were present.  Predation on the chickens is and will continue to be a challenge.  A more controlled study will be conducted in May 2019.

–Jennifer

16 Apr 2018

Ticks Bother Horses Too

Ticks Bother Horses Too

Pests are an ongoing challenge in an agricultural setting.  Ticks are one pest that afflict horses causing irritation and potentially disease.   Since Greenacres is home to many types of animals, the Equine Center is curious to see if pasturing chickens with the horses will reduce the number of ticks found on the horses.  Starting next month, tick numbers will be collected on horses pastured with and without chickens.

–Jennifer