Title:	Coconut residues increase light fraction of organic matter and water retention in semi-arid sandy soil under irrigated cultivation.
Authors:	SILVA, I. E. B. da DEON, M. D. I. SILVA, D. J. XAVIER, F. A. da S. SANTOS, A. P. G. SIGNOR, D.
Affiliation:	ISNARA EVELIN BARBOSA DA SILVA, UNIVERSIDADE DE PERNAMBUCO; MAGNUS DALL IGNA DEON, CPATSA; DAVI JOSE SILVA, CPATSA; FRANCISCO ALISSON DA SILVA XAVIER, CNPMF; ANA PAULA GUIMARÃES SANTOS, CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO; DIANA SIGNOR DEON, CPATSA.
Date Issued:	2024
Citation:	Revista Brasileira de Ciência do Solo, v. 48, e0240042, 2024.
Description:	Coconut palm cultivation is associated with the generation of a large amount of residues, mainly from coconut shells, and their utilization in agriculture can represent an opportunity in the context of circular economy and climate change. This study aimed to determine the effect of coconut shell deposition on carbon (C) stocks, organic matter quality, and soil water retention in coconut palm cultivation in the Brazilian semi-arid region. The study was conducted in a commercial coconut palm cultivation area in Petrolina, Pernambuco State, Brazil, forming a chronosequence with 0, 2, 4, 5 and 6 years of coconut shells or coconut leaves application on soil surface. Carbon contents and stocks up to 0.40 m deep, the physical quality of soil organic matter, and soil water retention were evaluated. Coconut leaves and coconut shells increased organic C content in the surface layers of the soil, but the addition of residues did not influence soil C stocks. The light fraction of organic matter (>53 µm) was more sensitive to the management studied, while the heavy fraction of organic matter (<53 µm) was not significantly changed by the evaluated treatments. Coconut shells deposition on the surface increased the available water content to 8.5 % in the soil up to 0.40 m deep, but the effects were more significant on the surface. The highest C contents in the fraction >53 µm and the highest soil water retention were observed three years after the deposition of coconut shells on the surface, which suggests the need for reapplying the residues after this period to maintain the benefits.
Thesagro:	Coco Matéria Orgânica Irrigação Solo Arenoso Solo Umidade do Solo Cobertura Morta Retenção de Água no Solo Carbono
NAL Thesaurus:	Coconuts Organic matter Soil organic matter
Keywords:	Resíduos de coco Estoque de carbono do solo Casca de coco Deposição da casca do coco
DOI:	https://doi.org/10.36783/18069657rbcs20240042
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)