Effect of previous soil management on sugarcane response to nitrogen fertilization

Rafael Otto, Eduardo Mariano, Richard L Mulvaney, Saeed Ahmad Khan, Beatriz Nastaro Boschiero, Sarah Tenelli, Paulo Cezar Ocheuze Trivelin

Research output: Contribution to journalArticle

Abstract

N Fertilizer recommendations must be improved to optimize N use efficiency (NUE) for bioenergy crops. A study was conducted to test the hypothesis that sites varying in historical usage of by-product differ in soil N-supplying power and sugarcane (Saccharum spp.) responsiveness to N fertilization. Our aim was to quantify soil N availability and N fertilizer rates, sources, and application timings for their effects on sugarcane yield and NUE. Three N response trials, each involving 0 to 200 kg N ha–1, were conducted in the state of São Paulo, Brazil, at sites varying historically in the usage of vinasse. Before fertilizer application and at harvest, soil inorganic N content was quantified and potential N mineralization estimated by the Illinois Soil Nitrogen Test (ISNT); stalk yield and sugar content were measured at harvest and used to estimate NUE. Sugarcane showed significant response to N fertilization only at the sites with no history of vinasse usage. Reducing the N rate from 120 to 80 kg N ha–1 showed limited potential for lowering yield (~ 1 %), while increasing the NUE by 54 %, which was far better than the 14 % increase achieved by modifying the N source or application timing. Monitoring inorganic N and ISNT levels over time to estimate soil N-supplying power has potential for predicting the responsiveness of sugarcane to N fertilization; however, ISNT interpretations must consider factors that impede mineralization or crop N utilization, such as soil acidity or a limitation on the availability of Ca or P. Soil N testing can help optimize NUE for sustainable bioenergy production.

LanguageEnglish (US)
Pages72-81
Number of pages10
JournalScientia Agricola
Volume76
Issue number1
DOIs
StatePublished - Jan 1 2019

Fingerprint

soil management
sugarcane
nitrogen
soil
vinasse
application timing
testing
mineralization
nitrogen fertilizers
historic sites
Brazil
Saccharum
energy crops
fertilizer rates
renewable energy sources
sugar content
soil pH
fertilizer application
monitoring
crops

Keywords

  • Illinois soil N test
  • Inorganic N
  • Mineralization
  • Saccharum spp
  • Vinasse

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Agronomy and Crop Science

Cite this

Otto, R., Mariano, E., Mulvaney, R. L., Khan, S. A., Boschiero, B. N., Tenelli, S., & Trivelin, P. C. O. (2019). Effect of previous soil management on sugarcane response to nitrogen fertilization. Scientia Agricola, 76(1), 72-81. https://doi.org/10.1590/1678-992x-2017-0147

Effect of previous soil management on sugarcane response to nitrogen fertilization. / Otto, Rafael; Mariano, Eduardo; Mulvaney, Richard L; Khan, Saeed Ahmad; Boschiero, Beatriz Nastaro; Tenelli, Sarah; Trivelin, Paulo Cezar Ocheuze.

In: Scientia Agricola, Vol. 76, No. 1, 01.01.2019, p. 72-81.

Research output: Contribution to journalArticle

Otto, R, Mariano, E, Mulvaney, RL, Khan, SA, Boschiero, BN, Tenelli, S & Trivelin, PCO 2019, 'Effect of previous soil management on sugarcane response to nitrogen fertilization' Scientia Agricola, vol. 76, no. 1, pp. 72-81. https://doi.org/10.1590/1678-992x-2017-0147
Otto, Rafael ; Mariano, Eduardo ; Mulvaney, Richard L ; Khan, Saeed Ahmad ; Boschiero, Beatriz Nastaro ; Tenelli, Sarah ; Trivelin, Paulo Cezar Ocheuze. / Effect of previous soil management on sugarcane response to nitrogen fertilization. In: Scientia Agricola. 2019 ; Vol. 76, No. 1. pp. 72-81.
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