Variation of Greenhouse Gases Fluxes and Soil Properties with Addition of Biochar from Farm-Wastes in Volcanic and Non-Volcanic Soils

Muñoz, Cristina; Ginebra, Milagros; Zagal, Erick

doi:10.3390/su11071831

Cited by 16 publications

(14 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the C contents of RBs, NSBs, and LBs exceeded 70%, which were significantly higher than those of most reported biochars, and those of the NSB were similar to those of the previously reported pecan shell biochars [16,31,38,61]. Therefore, when compared to other biochars, RBs, NSBs, and LBs may be more beneficial for improving soil organic matter content [62,63]. The C/N ratio is a key factor that can affect the soil nutrient cycle and metabolic processes [64].…”

Section: Elemental Analysissupporting

confidence: 84%

Feedstock-Induced Changes in the Physicochemical Characteristics of Biochars Produced from Different Types of Pecan Wastes

Zhang,

Peng,

et al. 2024

Forests

View full text Add to dashboard Cite

Large amounts of residues are generated in pecan cultivation processes. Biochar is an environmentally friendly way to utilize residues but attempts to prepare and apply biochar with pecan residues are rare. In this study, six types of biochars were produced from pecan branches, trunks, roots, nutshells, husks, and leaves under pyrolysis, and their physicochemical properties were compared to assess their application perspective in environmental and agricultural fields. The yields of six pecan biochars were 32.1%–45.9%, with the highest yield for husk biochar (HB) (45.9%). Among the pecan biochars, trunk biochar (TB) and root biochar (RB) had much larger specific surface areas. Branch biochar (BB), TB, and RB presented tubular structures with elliptical pores, while nutshell biochar (NSB), HB, and leaf biochar (LB) appeared flaky or as clustered structures with relatively rougher outer surfaces and irregular pores. The functional group types of pecan biochars were generally similar, but the intensities of the peak near 2900 cm−1 in BB were obviously higher than those of the other biochars. RB and LB contained significantly more ash and volatile than those of the other pecan biochars, with the highest fixed carbon content being found in NSB (70.1%). All of the pecan biochars were alkaline (7.90–9.87), and HB, LB, and NSB had significantly higher pH values than those of the other biochars. Elemental analysis indicated that RB, NSB, and LB had higher carbon levels (more than 70%) with lower O/C ratios (no more than 0.2). HB possessed a relatively high content of nitrogen, potassium, magnesium; the phosphorus content was highest in NSB; LB had the highest calcium content. The results of principal component analysis showed that BB, LB, and NSB were clustered in the same quadrant with relatively close relationships. The results of this study can guide the utilization of pecan wastes and their application as biochar in different fields.

show abstract

Section: Elemental Analysissupporting

confidence: 84%

Feedstock-Induced Changes in the Physicochemical Characteristics of Biochars Produced from Different Types of Pecan Wastes

Zhang,

Peng,

et al. 2024

Forests

View full text Add to dashboard Cite

show abstract

“…and Lin et al (2015) found that maximum CO2 and N2O emissions occurred in high soil C: N ratios (> 10). Crop residues increase soil C: N ratio in NT soils as compared to CT, also enhance microbial activities, and alternatively increase GHGs emissions (Mosier et al, 2006a;Muñoz et al, 2019).…”

Section: (Aii Bii Cii))mentioning

confidence: 99%

A global meta-analysis of greenhouse gases emission and crop yield under no-tillage as compared to conventional tillage

Shakoor

Shahbaz

Farooq

et al. 2021

Science of The Total Environment

167

View full text Add to dashboard Cite

“…Application of animal manure and compost (under high soil C: N ratio) increased the denitrification process, which ultimately increased the availability of soil N contents, which favors the N 2 O emissions (Charles et al, 2017). On the other hand, biochar application may also enhances soil C: N ratio, also improves microbial activities, and increases GHGs emissions (Muñoz et al, 2019). Most of the research studies that were comprised in this meta-analysis study did not account the changes of soil C: N ratio with animal manure and biochar amendments, so might be due to this, we found variation in the results.…”

Section: Soil C: N Ratiomentioning

confidence: 99%

Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

Shakoor

Shahzad

Chatterjee³

et al. 2021

Journal of Environmental Management

View full text Add to dashboard Cite

Organic amendments (animal manure and biochar) to agricultural soils may enhance soil organic carbon (SOC) contents, improve soil fertility and crop productivity but also contribute to global warming through nitrous oxide (N 2 O) emission. However, the effects of organic amendments on N 2 O emissions from agricultural soils seem variable among numerous research studies and remains uncertain. Here, eighty-five publications (peer-reviewed) were selected to perform a meta-analysis study. The results of this meta-analysis study show that the application of animal manure enhanced N 2 O emissions by 17.7%, whereas, biochar amendment significantly mitigated N 2 O emissions by 19.7%. Moreover, coarse textured soils increased [lnRR = 182.6%, 95% confidence interval (CI) = 151.4%, 217.7%] N 2 O emission after animal manure, in contrast, N 2 O emission mitigated by 7.0% from coarse textured soils after biochar amendment. In addition, this study found that 121-320 kg N ha − 1 and ⩽ 30 T ha − 1 application rates of animal manure and biochar mitigated N 2 O emissions by 72.3% and 22.5%, respectively. Soil pH also played a vital role in regulating the N 2 O emissions after organic amendments. Furthermore, > 10 soil C: N ratios increased N 2 O emissions by 121.4% and 27.6% after animal and biochar amendments, respectively. Overall, animal manure C: N ratios significantly enhanced N 2 O emissions, while, biochar C: N ratio had not shown any effect on N 2 O emissions. Overall, average N 2 O emission factors (EFs) for animal manure and biochar amendments were 0.46% and − 0.08%, respectively. Thus, the results of this meta-analysis study provide scientific evidence about how organic amendments such as animal manure and biochar regulating the N 2 O emission from agricultural soils.

show abstract

Variation of Greenhouse Gases Fluxes and Soil Properties with Addition of Biochar from Farm-Wastes in Volcanic and Non-Volcanic Soils

Cited by 16 publications

References 45 publications

Feedstock-Induced Changes in the Physicochemical Characteristics of Biochars Produced from Different Types of Pecan Wastes

Feedstock-Induced Changes in the Physicochemical Characteristics of Biochars Produced from Different Types of Pecan Wastes

A global meta-analysis of greenhouse gases emission and crop yield under no-tillage as compared to conventional tillage

Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

Contact Info

Product

Resources

About