Consulta: subjectFacets:"Laser-Induced Fluorescence Spectroscopy"
Registros recuperados: 2
Data/hora: 13/06/2024 15:31:22

Carbon stock and humification index of organic matter affected by sugarcane straw and soil management
Provedor de dados: 63
Autores: Segnini,Aline; Carvalho,João Luís Nunes; Bolonhezi,Denizart; Milori,Débora Marcondes Bastos Pereira; Silva,Wilson Tadeu Lopes da; Simões,Marcelo Luiz; Cantarella,Heitor; Maria,Isabella C. de; Martin-Neto,Ladislau.
The maintenance of sugarcane (Saccharum spp.) straw on a soil surface increases the soil carbon (C) stocks, but at lower rates than expected. This fact is probably associated with the soil management adopted during sugarcane replanting. This study aimed to assess the impact on soil C stocks and the humification index of soil organic matter (SOM) of adopting no-tillage (NT) and conventional tillage (CT) for sugarcane replanting. A greater C content and stock was observed in the NT area, but only in the 0-5 cm soil layer (p &lt; 0.05). Greater soil C stock (0-60 cm) was found in soil under NT, when compared to CT and the baseline. While C stock of 116 Mg ha-1 was found in the baseline area, in areas under CT and NT systems the values ranged from 120 to 127...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laser-Induced Fluorescence Spectroscopy; Sugarcane replanting; Crop residues; No-tillage; Soil organic matter.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000500006

Soil carbon stock and humification in pastures under different levels of intensification in Brazil
Provedor de dados: 63
Autores: Segnini,Aline; Xavier,Alfredo Augusto Pereira; Otaviani-Junior,Pedro Luis; Oliveira,Patrícia Perondi Anchão; Pedroso,André de Faria; Praes,Maria Fernanda Ferreira Menegucci; Rodrigues,Paulo Henrique Mazza; Milori,Débora Marcondes Bastos Pereira.
ABSTRACT: Intensive management of tropical pastures has shown potential for greenhouse gas (GHG) mitigation due to high forage production and C accumulation in the soil. This study aimed to evaluate different pasture management options in relation to their effect on soil C stocks and soil organic matter (SOM) humification. Pastures in four beef cattle production systems were assessed: intensive and irrigated pasture with high stocking rate (IHS); dryland pasture with high stocking rate (DHS); dryland pasture with moderate stocking rate (DMS); degraded pasture (DP). The soil under the native forest was also evaluated and soil carbon stocks from the 0-100 and 0-30 cm layers were assessed. Carbon stocks (0-100 cm) ranged from 99.88 to 142.33 Mg ha−1 in DP and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest biome; Brazilian livestock systems; Laser-Induced Fluorescence Spectroscopy; Humification index; Organic matter.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019000100033