2015 |
| 2015 Annual Report | |
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Two deer “exclosures” were also installed in April of this year. Their purpose is to compare the effects of deer browse on the forest growth compared with this area which excludes deer. The goal is to demonstrate the resiliency of the native species against invasive species when deer are not a factor. These exclosures are visible from the interpretive Woodland Walking Trail.
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Since 2013, water samples from the tile discharge outlets are collected to determine progress in erosion control (clarity), and nitrate and phosphate control. The initial focus is collecting water from Field #2 to determine the quality of the surface water coming onto the field from the northern residential subdivisions, and also the water that drains from the field into the Water and Sediment Control Basins (WASCoBs).
Collecting samples from subsurface drainage tile in Field #2 determines what was actually released into the Jahn Creek tile outlet. Ag Leader software is utilized to analyze the impacts of nutrient application into the field. The software tracks detailed cropping results gathered from the yield monitor as the result of the LSI’s use of variable rate nutrient application. Soil tests were pulled on a three acre grid in fall of 2014. The Initiative’s Ag Committee used the results of these tests to develop a variable rate nutrient management plan in 2015. Rather than applying fertilizer at the same rate over the entire farm, nutrients are applied as needed and not applied where they are less likely to be utilized by crops. Applying fertilizer this way is not only more economically efficient, it also has the environmental benefit of potentially reducing the amount of fertilizer that leaves the field. Monitoring of subsurface drainage and the water retained in the Agri-Drain gated tile system in Field #1 continued in 2015. Although it is too soon to draw any conclusions, monitoring of the water quality will continue to determine if the cash crops or cover crops utilize the nutrients trapped in the water retained by the gate system. Managing the water level in this low, wet area has improved the yield of the crop harvested in the fall. |
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