​​​Plant Analysis as a Nutrient Management Tool

October 2016 | 30 min., 12 sec.
by Dave Mengel
Kansas State University

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Summary

​Plant nutrients are a significant part of the input costs for modern soybean production systems. Plant analysis is an important tool to help fine tune a nutrient management program to ensure the crop has the nutrients it needs, but is not consuming and removing more than is needed for economically optimum production. Plant analysis should be viewed as a complimentary tool to soil testing, and should be an important part of your quality assurance program, to ensure that none of the essential nutrients are deficient (Hidden Hunger), or to identify incidents of Luxury Consumption, when more nutrients are being consumed by the crop than needed wasting valuable resources. This presentation will provide information on how to utilize plant analysis in soybeans as a routine monitoring tool for quality assurance, and also as a diagnostic tool to help identify why soybeans might be showing deficiency symptoms. Specific instructions on when and where to sample soybeans, what plant parts to collect and what the data returned from the lab means will be provided.

About the Presenter

Dave MengelDave Mengel grew up NW Indiana, about 40 miles SE of Chicago. An active member of 4-H and FFA, he received a BS in Ag Education and MS in Agronomy from Purdue University in 1970 and 1972 respectively, and a PhD in Soil Science from N.C. State University in 1975. Recently retired after a 40+ year career, he worked in extension, applied research and teaching, at LSU (1975-1979), Purdue (1979-1998) and Kansas State (1998-2016). He taught both undergraduate and graduate courses in soil fertility at Purdue and K-State and has directed the thesis/ dissertation research of over 40 grad students. His research has been across a broad range of topics in soil fertility and crop production, with a focus on efficient fertilizer use, especially nitrogen fertilizer management, for grain and forage crops. He served as Head of Agronomy at K-State from 1998 through 2005, when he stepped down to return to what he really enjoyed: teaching, extension, problem solving research and training graduate students. Dave is an active member of the American Society of Agronomy and Soil Science Society of America, and a Certified Professional Soil Scientist, Certified Professional Agronomist and a CCA. Dave currently lives in NE Kansas where he is farming, doing a little consulting, spoiling his Grandkids, and hopefully find a little time to go hunting and fishing.​

Contact Information:
Email: dmengel@ksu.edu

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