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Fertilgold K-6, Micros 1, Mg, and Ca on Organic White Corn, Field Trial (FGO) ENG

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1331 W. Houston Avenue, Gilbert, AZ 85233 | 480.423.6800 | www.fertilgold.com ©2018, Trademarks and registered trademarks are property of Bio Huma Netics, Inc. Initial Trial of Fertilgold ® K-6, Micros 1, Mg, and Ca on Organic White Corn Field Trial Report Conducted by Amy Bruch, Organic Producer, Waco, Nebraska Introduction In this first trial application of Fertilgold ® Organics products on organic white corn, organic producer Amy Bruch provided 2 80- acre plots of organic white corn in eastern Nebraska that was at the tassel growth stage. The Control plot was to continue to use her OMRI-Listed grower's standard fertilizer program, while the second plot, the Trial plot, would replace the grower's standard fertilizer program with new OMRI-Listed Fertilgold ® Organics products from post-tassel stage through harvest. Objective The objective of this field trial was for the grower to evaluate the ease of use and the effectiveness of 4 new OMRI-Listed liquid Fertilgold ® Organics crop nutrition products based on known field deficiencies. Materials and Methods The grower was supplied with 4 OMRI-Listed Fertilgold ® Organics products pre-blended for application at the post-tassel growth stage on the Trial plot. These included K-6 (potassium 6%), Mg (magnesium 5%), Ca (calcium 8%), and Micros 1 (containing sulfur 5% and the following micronutrients: boron 0.40%, copper 0.16%, iron 4%, manganese 2%, molybdenum 0.128 %, and zinc 1%). In addition, Huma Gro ® Proud 3 ® , an organic, OMRI-Listed liquid foliar insecticide-miticide-fungicide was mixed and applied with the other products. A second application of K-6 was applied at grain fill. (See Table 1 for rates.) All products tested and control products used were OMRI-Listed and approved for use in advance by Bruch's certification agency. Both corn plots had the organic fertilizer applied through foliar broadcast using a center-pivot irrigation system. Table 1. Fertigold ® Organics Product Application Dates and Rates Fertilgold Product Application Date (Crop Stage) Application Rate Fertilgold ® K-6 Aug 3, Aug 25 (Post-Tassel, Grain Fill) 0.2 gal/ac, 0.2 gal/ac Fertilgold ® Micros I Aug 3 (Post-Tassel) 0.125 gal/ac Fertilgold ® Ca Aug 3 (Post-Tassel) 0.3 gal/ac Fertilgold ® Mg Aug 3 (Post-Tassel) 0.06 gal/ac Huma Gro ® Proud 3 ® Aug 3 (Post-Tassel) 0.125 gal/ac Plant tissue analyses for the Trial plot were conducted prior Figure 1. Nutrient Leaf Analysis in Relative Proportion of Low, Optimum, or High Range for Control and Trial Plots Before and After Nutrient Application. (Analyses conducted by Kinsey Agricultural Services, Inc.) HIGH LOW OPTIMUM N P K Mg Ca S Zn Mn Cu Fe B Trial Plot: Corn Tassel Stage, Before First Fertilgold All Application (8/01/18) Trial Plot: Corn Post-Tassel Stage, After First Fertilgold All Application (8/10/18) Trial Plot: Corn Grain-Fill Stage, After 2nd Fertilgold K-6 Application (8/30/18) Control Plot: Corn Grain-Fill Stage (8/30/18) FGO-181206-01 to application of the Fertilgold ® products (tassel stage), after the first application (post-tassel), and after the second K-6 application (grain fill). Analysis of the Control plot was conducted at the same time as the final Trial plot analysis (grain fill). (See Figure 1 for tissue analyses results.) Results Plant tissue analysis indicated that, in all instances, nutrients from the OMRI-Listed Fertilgold ® products were entering the plant as effectively as the grower's standard fertilizer program. Yield results for the Trial plot averaged 2–3 bushels per acre higher than the Control plot. The grower reported product ease of use as being a major benefit, as the Fertilgold ® liquid products had low viscosity and did not clog the fertigation equipment for the pivot. Also, since the products could be applied with irrigation, no additional physical passes over the field were required for fertilizer application. The grower also commented that she really appreciated that all the specific nutrients were available and could be delivered within 10 days of deficiency identified by tissue analysis, when they could do the most good, and she was impressed with Fertilgold ® 's customer service both in building a customized solution to reduce deficiencies in her organic white corn field and the partnership throughout the process. Conclusions The trial demonstrated Fertilgold ® Organics liquid products to be effective, easily applied, and flexible in terms of nutrient choices for organic white corn grown on a center pivot irrigation system. Recommendations The product application rates used in this trial proved to be appropriate for all but potassium, which tissue testing found to be low in both the Control and Trial plots. It is recommended that the potassium application rates for organic white corn be significantly increased for future trials. It is also recommended that the next field trial for this crop be conducted with a full Fertilgold ® nutrition program that is applied from preplant through to harvest.

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