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Fluid Journal : Fluid Journal 2005-2007
16 Fluid Journal WINTER 2007 Table 3. Soybean yield as affected by fluid material, rate, and placement, 2005. Placement and rate with seed top of seed below seed Material high low high low high low bu/A 10-34-0 61.9 65.0 63.3 64.5 62.3 64.2 4-10-10 65.3 65.1 63.4 64.9 65.6 62.5 3-18-18 62.7 68.1 66.7 64.4 63.4 64.2 Control (no fluid fertilizer) = 63.1 bu/A 10-34-0 and 4-10-10, 3 and 6 gal/A; 3-18-18, 2 and 4 gal/A Table 4. Sugarbeet yield as affected by fluid material, rate, and placement in a soil with silty clay loam texture, 2005. Placement and rate with seed top of seed below seed Material high low high low high low tons/A 10-34-0 28.1 29.1 27.2 29.4 29.1 30.2 4-10-10 24.3 27.4 28.8 26.8 29.8 27.8 3-18-18 23.0 29.9 26.7 28.0 25.9 23.8 Control (no fluid fertilizer) = 28.9 tons/A the largest stand reduction. When averaged over material and rate, placement with the seed produced the largest stand reduction. There was less damage when fertilizer was placed on top of the seed than when placed below. As with corn, stand reduction appeared to be related to the added N in the 10-34-0. Sugarbeet. Sugarbeet emergence was not significantly affected by treatment. There are two possible explanations for this observation. • Lower application rates • The sugarbeet seed was coated and this coating may have protected the seed from fertilizer damage. Yield Corn. The impact of treatment on corn yield varied with soil texture (Table 2). Treatment had no significant effect on yield at Welcome and thanks! New member companies: Kugler Company Bio Huma Netics, Inc. Lortscher Agri Service, Inc. Cooperative Elevator Company Exactrix Global Systems Farmers Fertilizers & Supply, Inc. Cone Ag, Inc. Brookside Laboratories Inc. Farmers Cooperative of El Campo Chemical Dynamics, Inc. Horizon Ag Products Martin Resources J. D. Skiles Inc. Enviropac, Inc. Companies increasing pledges: The Andersons Nu Chem Intrepid Potash Douglass Fertilizer & Chemical Wilbur-Ellis The Fluid Fertilizer Foundation the site with the silty clay loam texture.Yield was affected by both material and rate at the site with the loamy fine sand texture. This is consistent with the effect of these factors on emergence. Compared to the control, both rates of 10-34- 0 applied in contact with the seed reduced yield. This is attributed to a reduction in stand associated with the corresponding treatments. Use of 10-34-0 at the low rate improved yield when the band was placed so that there was some soil between seed and fertilizer. In general, application of 4-10-10 and 3-18-18 either in contact with or near the seed improved yield when both rates were applied. The yields were equivalent for both rates applied. There was no significant interaction between fluid grade and rate of application. Soybean. Although all factors included in the study had a significant effect on emergence, there was no effect on yield (Table 3). There is general agreement that reductions in soybean stands do not necessarily correspond to reductions in yield. With fewer plants, each plant produces more branches and, subsequently, more pods per plant. Sugarbeets. Fluid grade had a significant effect on sugarbeet yield (Table 4). When averaged over rate and placement, yield was highest when 10-34-0 was used. Application of 4-10-10 and 3-18-18, regardless of rate and placement, had no positive effect on yield. Dr. Rehm and Dr. Lamb are nutrient specialists at the University of Minnesota. Bredehoeft is a research agronomist at Southern Minnesota Beet Sugar Cooperative.
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