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Fluid Journal : Fall 2017
17 The Fluid Journal Fall 2017 for fluid lime application in the seed row is an effective delivery method • Determine if application of micronized fluid lime injected in the seed germination layer supports plant development to better push through the acidified soil strata • Determine if this effort has any yield impact. Methodology Design. Chuck Schmidt, owner of Figure 3. Liming the Inland Pacific Northwest, Kurtis L. Schroeder, University of Idaho, 2016. Schmidt Farms LLC, Rosalia, Washington, is one of the first adaptors using micronized fluid lime NuCal in broadcast spray and precision application--directly with the drill--in the inland Northwest. An experiment was conducted in Spring Wheat, club wheat variety, (Figure 6). Application. NuCal fluid lime, a micronized fluid calcium carbonate manufactured by Columbia River Carbonates and branded, marketed, and sold by Helena Chemical Company was sourced from Helena’s Pullman, WA agronomy location. Application rate was calculated at 10 gallons/acre banded (equals 70 gallons broadcast) directly into the seed row using a HORSCH--Anderson No-Till precision drill. The Anderson Industries RAZOR point was used with NuCal fluid lime application system designed by Chuck Schmidt. The metering pump selected was a diaphragm 12V (Table 2). Each drill shank of the 50 foot drill was equipped with separate tubing for fertilizer and a portion of the drill was equipped to deliver fluid lime: • Two lines for starter fertilizer P and K • Two lines for NuCal fluid lime, very close to the seed • One line for N fertilizer • Two large openings per row for seeds Note: NuCal fluid lime is a reactive, effective fluid liming material with high impact on cropping systems. t is safe for direct seed contact, but will not mix with most fertilizers. Jar-tests will confirm compatibility. Fluid lime flow was controlled through orifices seated directly at the manifold connection. Product flow of fluid lime suspension was assured by eliminating air space in lines and water flushing after every use and refill to prevent drying an plugging. P and K starter fertilizer was applied in two tubes for each opener, two tubes of lime per opener and one separate tube for N fertilizer. Application tubing was air brake tubing normally used for highway trucks. These allowed for increasing flow using up to 40 psi and flow was then regulated by the size of the orifices. More pressure equals more volume. Also, the small tube diameter is helpful in reducing air space in the lines, which can cause NuCal to dry and potentially create particles that can plug the system. Cleaning with water is improved using small lines, which are quickly purged. Calculation of NuCal fluid lime material needed per banded row is shown in Table 3. Harvest. A Wintersteiger plot combine and Harvest Master weighting system was contracted from Kootenai Valley Farm and Research LLC, Hubbard Ag Science, Bonners Ferry, ID (Scott Cook). Three passes in the middle of each control (untreated) and treated plot were harvested and yields calculated (Figure 7). Field yield increase ranged from 3 to 14 bu/acre and averaged 7 bu/acre on Figure 2. Effect of low soil pH on wheat grain yield in a winter wheat-summer fallow long-term experiment at the Columbia Basin Agricultural Research Center (1940- 2010), (from Research Proposal for the Agricultural Research Foundation Oregon Wheat Commission). Title: Effect of Liming Acid Soils on Fertilizer-Use- Efficiency, Wheat Productivity, and Profitability, 2016.