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Title: Aboveground Biomass, Carbon Sequestration, and Yield of Pyrus pyrifolia under the Management of Organic Residues in the Subtropical Ecosystem of Southern Brazil
Authors: da Silva, Lucas Jónatan Rodrigues
Souza, Tancredo 
Laurindo, Lídia Klestadt
Nascimento, Gislaine dos Santos
de Lucena, Edjane Oliveira
Freitas, Helena 
Keywords: compost; field experiment; mulching; soil C pools; subtropical fruticulture
Issue Date: 2022
Project: CAPES-Brazil 
scholarship provided by FAPESC 
scholarship provided by CNPq 
Serial title, monograph or event: Agronomy
Volume: 12
Issue: 2
Abstract: Organic residues management (ORM) alter plant traits and soil properties by changing nutrient and carbon cycling. It is unclear how ORM (mulching, compost, and their combination) applied for 18 months creates a mechanism to promote changes in a P. pyrifolia field. Our aim was to evaluate the influence of ORM on P. pyrifolia nutritional status, plant traits, yield, and carbon sequestration in a 16-year subtropical P. pyrifolia field. For this purpose, we performed an experiment in a randomized block design, using a factorial scheme 2 2, with the use of Compost and Mulching (e.g., presence and absence). The highest values of leaves N content, plant height, stem biomass, root biomass, total biomass, yield, and above- and belowground carbon (C) density were found on plots that received compost as the ORM. For soil organic C stock, the highest values were found on plots where mulching was applied. Finally, the highest values of total C density were found on plots that received the combination of Mulching and Compost. Our findings suggest that: (i) the use of Compost is the best alternative to promote leaves N content, plant height, stem dry biomass, root dry biomass, and total dry biomass, plant yield, and aboveand belowground C density into a 16-year P. pyrifolia field into subtropical conditions; and (ii) the soil organic C stocks were improved using just the mulching treatment. The results highlight the importance of considering just one organic residue practice based on a sustainable way to improve both plant production and carbon sequestration, no differences were found between the use of compost and the combination of compost and mulching.
ISSN: 2073-4395
DOI: 10.3390/agronomy12020231
Rights: openAccess
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais

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