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Fluid Journal : Fall 2012
this result. Although cumulative shoot dry matter production tended to be higher for the treatments without biochar, the overall agronomic efficiency of the P fertilizer was improved by biochar application (Table 4).Further statistical analysis of plant growth and nutrient uptake data should provide a clearer picture of the fertilizer value of the biochar, any biochar-fertilizer interactions, and whether legacy or fresh biochar affect the nutrition of juvenile corn in different ways. Table 5. Initial soil test levels for Clarion loam collected in 2010. Legacy biochar refers to an 8 ton/acre application to this soil in the fall of 2007. Soil Test Parameter Control Soil Legacy Biochar Soil Bray-1 P, ppm 65 (VH) 50 (VH) Exchangeable K, ppm 159 (VH) 119 (L) Exchangeable Ca, ppm 2034 1981 Exchangeable Mg, ppm 206 213 Extractable S, ppm 4 4 pH 5.6 5.7 Organic Matter, % 2.8 2.8 CEC, cmol(+)/kg 15.1 14.8 MAXIMIZE PROFITS Root Growth Stimulator is a synergistic formulation of zinc and ammonium acetate that stimulates the plant to generate a greater volume of healthier roots. The result is a plant with more vigor and greater stress tolerance that produces higher yields and higher profits. learn more at: www.nulex.com Visit your Nulex Distributor or contact a sales representative at 800-831-4815 Dr. Kovar is a Research Soil Scientist and Dr. Karlen is a Supervisory Research Soil Scientist and Research Leader at the USDA Agricultural Research Service National Laboratory for Agriculture and the Environment in Ames Iowa.
Late Spring 2012