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Can Partial Cultivation of Only The Sugarcane Row Reduce Carbon Dioxide Emissions in an Oxisol and Ultisol?
Author(s) -
Castro de Souza Luma,
Fernandes Carolina,
Santos Nogueira Deise Cristina,
Moitinho Mara Regina,
Silva Bicalho Elton,
La Scala Newton
Publication year - 2017
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj2016.10.0565
Subject(s) - oxisol , ultisol , tillage , agronomy , sowing , environmental science , carbon dioxide , conventional tillage , soil water , chemistry , soil science , biology , organic chemistry
Core Ideas The use of soil management at line (alone) reduces the CO 2 emission. The higher soil aggregation favorece the higher CO 2 emission. The soil management at line (alone) improve the lower soil desegregation.The objective was to determine the influence of partial cultivation of only the crop row on carbon dioxide (CO 2 ) emissions in an Oxisol and Ultisol. The experimental design was a large paired‐plot design with treatments consisting of targeted chiseling to only the planting row to chiseling the whole field. Soil CO 2 emissions, soil temperature, and soil moisture were measured daily for 12 d after tillage. In the Oxisol, CO 2 emissions were higher on the second day after tillage and then decreased until Day 6. When analyzing the effect of tillage, chiseling in the planting row (CPR) showed, in general, lower CO 2 emissions (2.54 µmol m −2 s −1 ) when compared to chiseling in total area (CTA) (3.32 µmol m −2 s −1 ), regardless of the day after tillage. However, the linear regression analysis between soil CO 2 emissions and soil moisture in the Ultisol was significant for CPR ( R 2 = 0.79, p < 0.01) and CTA ( R 2 = 0.58, p < 0.01). Total soil CO 2 emissions were higher in the Oxisol for both tillage systems (CPR = 1020.9 kg CO 2 ha −1 and CTA = 1336.3 kg CO 2 ha −1 ) than the Ultisol (CPR = 587.0 kg CO 2 ha −1 and CTA = 649.3 kg CO 2 ha −1 ). These results indicate that soil tillage by using CPR favors a lower soil CO 2 emission to the atmosphere and contributes to a reduction in soil degradation when cultivated with sugarcane ( Saccharum officinarum L.).