Indiana CCA Conference 2017 Presentation
 
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Presentations

Nutrient Management

Tue, Dec 12, 2017
10:00am to 10:50am

Nutrient Management

Tue, Dec 12, 2017
3:00pm to 3:50pm

Soybean Yield, Nutrient Uptake, and Role of Biological Nitrogen Fixation

Few investigations are available looking at the changes over time in nutrient uptake and yield, in addition to the study of nutrient stoichiometry as a metric of nutrient limitations in soybean. The presentation will be focused on: 1) understanding the historical changes on yield, total biomass, and nutrient (N, P, K) content and concentration in studies published from 1921 to 2016; 2) investigating the role of biological nitrogen fixation (BNF) as a main contributor of this nutrient to the plant; and 3) exploring the effect of management practices for closing yield gaps. Historical seed yield increase was primarily driven by increase in biomass rather than harvest index (HI) with also increasing NHI. Overall, contribution of BNF to plant N demand was 56%, representing a total contribution of 122 lbs N per acre. From a pragmatic viewpoint, the use of the best management practices (BMPs) impacted soybean yield, biomass and N uptake. Narrow row spacing, high seeding rate, and balanced nutrition increased partitioning efficiency for biomass and nitrogen, and consequently increased final yields. These findings have implications for soybean production and integrated nutrient management to improve yield, nutrient use efficiency, and seed nutrient composition. 

Speaker

Ignacio Ciampitti

Professor, Agronomy
Kansas State University
Biography

Dr. Ignacio A. Ciampitti, born in Buenos Aires City, Argentina, earned his Agricultural Engineering and Master of Sciences degrees from the University of Buenos Aires. Pursuing his Ph.D. at Purdue University, he was recognized with esteemed honors, including the Marschner Young Scientist Award and the Crop Science Gerald O. Mott Award. Dr. Ciampitti's research integrates fieldwork, statistics, remote sensing, and modeling to comprehend plant responses. With over 250 refereed journal articles in the last decade, his expertise spans corn, soybean, sorghum, and canola crops. Notable accolades include Early Career Awards from both Agronomy and Crop Science societies and recognition for outstanding editorial contributions. Currently, Dr. Ciampitti serves as Associate Editor-in-Chief for the European Journal of Agronomy, Technical Editor for Crop Science journal, and is on the editorial boards of esteemed journals like Remote Sensing and Field Crops Research journal.