Results 21 to 30 of about 1,504 (131)

Recalcitrant carbon and nitrogen in agriculture soils with residue accumulation and fertilization under tropical conditions

Bioscience Journal, 2019
Soil organic matter has a strong relation to total organic carbon, and about 85% of organic carbon consists of humic substances (HS), classified as humin (HU), humic (HA) and fulvic acids (FA), and denominated as recalcitrant carbon in soil.
Joseph Elias Rodrigues Mikhael, Risely Ferraz Almeida, Fernando de Oliveira Franco, Roberta Oliveira Camargo, Beno Wendling   +4 more
doaj   +3 more sources

Characterization of Synthetic Humin from Solid Hydrolysate and Biochar from Hydrothermal Carbonization Products of Chicken Feather Waste

Indonesian Journal of Chemistry
Solid hydrolysate and biochar 2:1 are synthetic humus from hydrothermal carbonization of chicken feather waste and contain humin that can be isolated by IHSS method. The recalcitrant humin is obtained in solid form.
Siti Dewi Fatimah, Agus Kuncaka, Roto Roto   +2 more
doaj   +1 more source

Impact of Nutrient Management Practices on the Status and Quality of Soil Humus in Newly Developed Terraced Land

International Journal of Bio-Resource and Stress Management, 2023
An experiment was conducted in the experimental farm at School of Agricultural Sciences and Rural Development, Medziphema, Nagaland to evaluate the impact of different nutrient management practices on content and quality of soil humus in a newly ...
Manoj Dutta, B. S. Chauhan
doaj  

Datação da fração humina da matéria orgânica do solo e sua comparação com idades 14C de carvões fósseis Dating of the humin fraction of soil organic matter and its comparison with 14C ages of fossil charcoal

Química Nova, 1999
The radiocarbon dating of the soil organic matter (SOM) is a polemic subject, due mainly to the complexity of the formation of the soils and to the variable contamination from several sources.
Susy Eli Marques Gouveia, Luiz Carlos Ruiz Pessenda, Ramon Aravena   +2 more
doaj   +1 more source

Alterações na matéria orgânica e na biomassa microbiana em solo de mata natural submetido a diferentes manejos Changes in organic matter and in microbial biomass of a natural forest soil under different management

Pesquisa Agropecuária Brasileira, 2000
Avaliou-se, em um Latossolo Roxo, o efeito de diferentes formas de manejo do solo sobre a matéria orgânica do solo e na biomassa microbiana. Os tratamentos usados foram: mata natural; mata natural até 1976 e café até 1994 (amostragem na projeção da copa ...
MILTON MARCHIORI JÚNIOR, WANDERLEY JOSÉ DE MELO   +1 more
doaj   +1 more source

The Potential of Tufa as a Tool for Paleoenvironmental Research—A Study of Tufa from the Zrmanja River Canyon, Croatia

Geosciences, 2021
Tufa is a fresh-water surface calcium carbonate deposit precipitated at or near ambient temperature, and commonly contains the remains of macro- and microphytes. Many Holocene tufas are found along the Zrmanja River, Dalmatian karst, Croatia.
Jadranka Barešić, Sanja Faivre, Andreja Sironić, Damir Borković, Ivanka Lovrenčić Mikelić, Russel N. Drysdale, Ines Krajcar Bronić   +6 more
doaj   +1 more source

Turfeiras da Serra do Espinhaço Meridional - MG: II - influência da drenagem na composição elementar e substâncias húmicas Peat bogs in the Serra do Espinhaço Meridional - Minas Gerais, Brazil: II - influence of drainage on elemental humus composition and substances

Revista Brasileira de Ciência do Solo, 2009
As turfeiras são Organossolos que resultam de condições ecológicas ideais ao acúmulo de material orgânico, controladas pelos sistemas geomorfológicos e processos geológicos e climáticos globais.
Alexandre Christófaro Silva, Ingrid Horák, Pablo Vidal-Torrado, Antonio Martinez Cortizas, Jose Rodrigues Racedo, José Ricardo da Rocha Campos   +5 more
doaj   +1 more source

Carbon in Humic Fractions of Organic Matter in Soil Treated with Organic Composts under Mango Cultivation

Revista Brasileira de Ciência do Solo, 2016
Soil organic matter (SOM) plays a key role in maintaining the productivity of tropical soils, providing energy and substrate for the biological activity and modifying the physical and chemical characteristics that ensure the maintenance of soil quality ...
Joyce Reis Silva, Davi José Silva, Carlos Alberto Tuão Gava, Thaisi Caroline Tavares de Oliveira, Maria do Socorro Conceição de Freitas   +4 more
doaj   +1 more source

Mechanism of the Removal of AuCl Ions from Aqueous Solution by Means of Peat Soil Humin

Adsorption Science & Technology, 2011
Peat soil humin, obtained after the removal of fulvic and humic acid fractions according to the recommended procedure of the International Humic Substances Society (IHSS), has the ability to remove AuCl − 4 ions from aqueous solution.
Sri Juari Santosa, Sri Sudiono, Dwi Siswanta, Eko Sri Kunarti, Shinta Rosalia Dewi   +4 more
doaj   +1 more source

Lindane sorption and desorption behaviour on sediment organic matter [PDF]

Journal of the Serbian Chemical Society, 2013
The work is concerned with the sorption and desorption behaviour of lindane on four humic acid fractions (HAs) and two humin fractions, sequentially extracted from Ludas lake sediment.
Tričković Jelena S., Ivančev-Tumbas Ivana I., Kragulj Marijana M., Prica Miljana Đ., Krčmar Dejan M., Nikolić Aleksandar D., Dalmacija Božo D.   +6 more
doaj   +1 more source