Evaluating management factor contributions to reduce corn yield gaps

Matias L. Ruffo, Laura F. Gentry, Adam S. Henninger, Juliann R. Seebauer, Frederick E. Below

Research output: Contribution to journalArticle

Abstract

The need to intensify agricultural production due to a growing human population requires yield gaps to be closed. In 2009 and 2010, five management factors were assessed for their individual and cumulative contributions to reducing the corn (Zea mays L.) yield gap and yield components in a corn–soybean [Glycine max (L.) Merr.] rotation. Five management factors (plant population, transgenic insect resistance, fungicide containing strobilurin, P–S–Zn fertility, and N fertility) were evaluated. An incomplete factorial design with these factors resulted in 12 treatments, including two controls: high technology (HT) and standard technology (ST), comprising all five factors applied at the supplemental or the standard level, respectively. The HT control yielded 2.9. Mg ha-1 (2.12–3.50. Mg ha-1 across sites and years) more grain (28%) than the ST control, demonstrating the yield gap between traditional farm practice and attainable yield using available technologies. All management factors except plant population were necessary for reducing the yield gap. Fungicide and Bacillius thuringiensis gene (Bt) traits provided the greatest yield increases compared to the ST system. Averaged over sites and years, if each factor was withheld from the HT system, yield decreased by decreasing kernel number. Increased plant population reduced the yield gap when all other inputs were applied at the supplemental level. Kernel number was more significant for increasing yield than kernel weight. The yield contribution of each factor was greater when applied as part of a full complement of supplemental inputs than when added individually to the standard input system.

Original languageEnglish (US)
Pages (from-to)495-505
Number of pages11
JournalAgronomy Journal
Volume107
Issue number2
DOIs
StatePublished - Mar 1 2015

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corn
transgenic insects
seeds
fungicide resistance
human population
yield components
Glycine max
fungicides
complement
Zea mays
agriculture
farms
genes

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Ruffo, M. L., Gentry, L. F., Henninger, A. S., Seebauer, J. R., & Below, F. E. (2015). Evaluating management factor contributions to reduce corn yield gaps. Agronomy Journal, 107(2), 495-505. https://doi.org/10.2134/agronj14.0355

Evaluating management factor contributions to reduce corn yield gaps. / Ruffo, Matias L.; Gentry, Laura F.; Henninger, Adam S.; Seebauer, Juliann R.; Below, Frederick E.

In: Agronomy Journal, Vol. 107, No. 2, 01.03.2015, p. 495-505.

Research output: Contribution to journalArticle

Ruffo, ML, Gentry, LF, Henninger, AS, Seebauer, JR & Below, FE 2015, 'Evaluating management factor contributions to reduce corn yield gaps', Agronomy Journal, vol. 107, no. 2, pp. 495-505. https://doi.org/10.2134/agronj14.0355
Ruffo, Matias L. ; Gentry, Laura F. ; Henninger, Adam S. ; Seebauer, Juliann R. ; Below, Frederick E. / Evaluating management factor contributions to reduce corn yield gaps. In: Agronomy Journal. 2015 ; Vol. 107, No. 2. pp. 495-505.
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