Variações de curto prazo nas emissões de CO2 do solo em diferentes sistemas de manejo do cafeeiro

D'Andrea, Alexandre Fonseca; Silva, Marx Leandro Naves; Curi, Nilton; Freitas, Diego Antonio França de; Roscoe, R.; Guimarães, Paulo Tácito Gontíjo

doi:10.1590/s0100-40422009000900014

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…The higher soil CO 2 fluxes (172 mg m −2 hr −1 ; Figure b) found post‐subsoiling in H + F harvested areas are similar to the lower limits found in the literature for coffee and sugarcane in Brazil, which range from approximately 200 to 3,000 mg m −2 hr −1 (D'Andréa et al, ; La Scala et al, ; Moitinho et al, ). These fluxes are also similar to those for wheat cultivation in Hungary and China (Dong et al, ; Rádics et al, ) and for rubber trees in Indonesia, which range from approximately 100 to 1,400 mg m −2 hr −1 (Wakhid, Hirano, Okimoto, Nurzakiah, & Nursyamsi, ).…”

Section: Discussionsupporting

confidence: 83%

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Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

Fialho

Teixeira

et al. 2018

Land Degrad Dev

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Eucalyptus forests stand out for their potential to sequestrate atmospheric CO 2 in soil organic matter throughout their growth. Our study evaluated the harvesting and tillage effect in eucalyptus plantations to the soil CO 2 , 13 C-CO 2 , and CH 4 fluxes. This study was carried out in a eucalyptus plantation, on Typic Haplustox soil. The study used stands cultivated with eucalyptus at the end of the first rotation (7 years), established over degraded pastures. The effect of harvesting was assessed through comparisons of samples taken before and after harvesting with Feller + Skidder (F + S) and Harvester + Forwarder (H + F) methods and separate samples of plant rows (R) and plant interrows (IR). The effect of tillage was assessed through comparisons of R and IR samples taken before and after subsoiling tillage in areas harvested with F + S and H + F methods. A nested experimental design was used with eight replicates. The harvest operation (F + S and H + F methods) in eucalyptus plantationsincreased soil CO 2 fluxes, which were primarily derived from eucalyptus materials ('new C'). The F + S harvesting method resulted in the highest soil density and soil moisture reduction in the IR. The tillage operation (subsoiling) resulted in higher soil CO 2 fluxes in eucalyptus plantations harvest with F + S and H + F methods. However, the H + F method preserved the older soil organic carbon (40.8% in R and 50.4% IR of C 4 -CO 2 ). The soil in the eucalyptus plantations showed soil CH 4 influxes, and the harvest and tillage (subsoiling) operations did not negatively affect the net soil CH 4 influx in the studied eucalyptus plantations.

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Section: Discussionsupporting

confidence: 83%

“…Soil CO 2 emissions to the atmosphere are due to biological processes such as decomposition of organic compounds and root systems respiration (D'Andréa et al, ; Hueso et al, ). Usually, the CO 2 concentration in soil pores is higher than in that in the atmosphere due to the presence of roots and organisms.…”

Section: Discussionmentioning

confidence: 99%

Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

Fialho

Teixeira

et al. 2018

Land Degrad Dev

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“…Although several studies around the world are currently being developed using equipment with the principle Infrared Gas Analyzer to measure CO2 (D'ANDRÉA et al, 2009;CARMO et al, 2014;GARCIA-MONTIEL et al, 2004;IAMAGUTI et al, 2015;MOITINHO et al, 2013;ARAÚJO NETO et al, 2014;THOMAZINI et al, 2015THOMAZINI et al, , 2014, most of the studies performed do not clarify the most suitable time to collect CO2 flow data, or if this time exists. This information can indicate if there is a relationship between the time of day and CO2 emissions (ALMAGRO et al, 2009;THOMAZINI et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

CO2 flux emissions from Atlantic Rainforest soil: determining the most suitable sampling time

Vitória

Simon

Gontijo

et al. 2020

CeN

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Few studies have established protocols for measuring CO2 emissions in the soil. In order to determine the time of day which best represents the average daily CO2 emissions, the present study evaluated the variations in CO2 emissions throughout the day and the relationship between these emissions and the soil moisture and temperature, in an attempt to standardize data collection in tropical soils. The study was carried out in an Atlantic forest fragment of the coastal tablelands, Brazil. A close relationship between CO2 emission and soil temperature was observed, with CO2 emissions decreasing as daytime temperatures increased. The soil moisture had no direct relation with the CO2 emission, but was only related to the soil temperature. Two groups of CO2 emissions were observed, forming between the sampling time from 09:00 a.m. to 10:00 p.m., and from 11:00 p.m. to 08:00 a.m. Due to the small difference found between the mean group formed between 09:00 a.m. and 10:00 p.m., which was ~ 8% when compared to the general average, and also the fact that CO2 is easier to collect during this time, it is suggested that this period is the most suitable time to collect CO2 in the field.

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Soil Efflux of Carbon Dioxide in Brazilian Cerrado Wheat (Triticum aestivum L.) under Variable Soil Preparation and Irrigation

et al. 2022

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Soil turning during pre-seeding preparation is meant to loosen and promote physical characteristics responsible for the development of crop roots in soil. In this study, we demonstrate effects of three methods of pre-seeding preparation at two depths of irrigation on carbon dioxide (CO2) efflux as well as the temporal variability in the distribution of soil carbon. This experiment was conducted at the rural cooperative extension research station in Tangará da Serra, Mato Grosso, Brazil, for two wheat production years in 2011 and 2012. The experimental design was randomized in strips, with four repetitions. Wheat was irrigated during the June to early October dry season. The treatments include two methods of soil preparation: traditional preparation with one plowing and two disc harrowings and minimal preparation with one seed bed conditioner pass. A third treatment of direct seeding was also evaluated. Soil CO2 efflux, soil temperature, air-filled soil porosity, and labile carbon were measured. We found soil preparation affects CO2 efflux in irrigated cultivation systems within Brazil’s Cerrado savannah, with conventional tillage having greater CO2 emissions than either reduced tillage or direct seeding. Soil CO2 emissions were lower at 508 mm versus 698 mm irrigation depth, but wheat yields were significantly lower.

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Variações de curto prazo nas emissões de CO2 do solo em diferentes sistemas de manejo do cafeeiro

Cited by 3 publications

References 3 publications

Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

CO2 flux emissions from Atlantic Rainforest soil: determining the most suitable sampling time

Soil Efflux of Carbon Dioxide in Brazilian Cerrado Wheat (Triticum aestivum L.) under Variable Soil Preparation and Irrigation

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