Results 31 to 40 of about 18,346 (209)

Simulating solute transport in an aggregated soil with the dual-porosity model: measured and optimized parameter values [PDF]

, 1994
The capability of the first-order, dual-porosity model, which explicitly accounts for non-ideal transport caused by the presence of ‘immobile’ water, to predict the non-ideal transport of non-sorbing solute in a constructed aggregated soil has been ...
Augustijn, D., Brusseau, M.L., Gersti, Z., Rao, P.S.C.   +3 more
core   +3 more sources

Aplicação superficial de gesso num Latossolo de baixa acidez sob sistema plantio direto [PDF]

, 2011
The conditions in which a favorable response to a gypsum application can be expected on crop yields are not clear. A 3-year field trial was carried out to evaluate the effects of gypsum application on soil chemical attributes and nutrition and yield of ...
CAIRES, Eduardo Fávero, CHURKA, Susana, GARBUIO, Fernando José, JORIS, Hélio Antonio Wood, MASCHIETTO, Evandro Henrique Gonçalves   +4 more
core   +3 more sources

Variabilidade espacial de MO, P, K e CTC do solo sob diferentes usos e manejos Spatial variability of MO, P, K and CTC of soil under different use and management conditions

Ciência Rural, 2007
O estudo da variabilidade espacial dos atributos químicos dos solos é particularmente importante em áreas onde o solo está submetido a diferentes manejos. O trabalho foi desenvolvido em Selvíria (MS), com o objetivo de avaliar a variabilidade espacial da
Eloiza Gomes Silva Cavalcante, Marlene Cristina Alves, Gener Tadeu Pereira, Zigomar Menezes de Souza   +3 more
doaj   +1 more source

Water Erosion in Oxisols under Coffee Cultivation [PDF]

Revista Brasileira de Ciência do Solo, 2018
ABSTRACT Water erosion is one of the main environmental impacts of land use. When soil and water losses occur, nutrients essential for the growth and maintenance of plants are removed, with harmful outcomes on the sustainability of agriculture and the environment.
Mendes Júnior, Henrique, Tavares, André Silva, Reis dos Santos Júnior, Walbert, Silva, Marx Leandro Naves, Santos, Breno Régis, Mincato, Ronaldo Luiz   +5 more
openaire   +4 more sources

Influence of notillage on carbon sequestration and erosion in Brazil [PDF]

, 2004
Les sols constituent le plus gros réservoir superficiel de C (hors les roches carbonatées), environ 1500 Gt C, ce qui équivaut à presque trois fois la quantité stockée dans la biomasse terrestre, et deux fois celle de l'atmosphère.
Bernoux, Martial, Blavet, Didier, Cerri, Carlos Clemente, Cerri, Carlos Eduardo P., Metay, Aurélie, Perrin, Anne-Sophie, Piccolo, Marisa de Cassia, Scopel, Eric, Siqueira Neto, Marcos   +8 more
core  

Modelagem das mudanças nos estoques de carbono orgânico de solos distintos após quatro rotações do eucalipto no sudeste do Brasil com o modelo century [PDF]

, 2011
Soil organic matter (SOM) plays an important role in carbon (C) cycle and soil quality. Considering the complexity of factors that control SOM cycling and the long time it usually takes to observe changes in SOM stocks, modeling constitutes a very ...
BARROS, Nairam Félix de, LIMA, Augusto Miguel Nascimento, MENDONÇA, Eduardo Sá, NEVES, Júlio César Lima, NOVAIS, Roberto Ferreira, PAUL, Keryn, POLGLASE, Phill, RAISON, John, SCHULTHAIS, Fernanda, SILVA, Ivo Ribeiro da, SOARES, Emanuelle Mercês Barros, STAPE, Jose Luis   +11 more
core   +3 more sources

Moderate Fire Temperatures Affect the Structure of Clayey Oxisol Aggregates

Land Degradation &Development, EarlyView.
ABSTRACT Wildfires have become increasingly frequent and intense worldwide, raising concerns about their impacts on soil systems. However, the thermal responses of clay‐rich Oxisols, dominated by Fe and Al oxides, remain poorly understood. In this study, samples from the 0 to 5 cm layer of six Oxisols were subjected to controlled heating at ...
Yasmmin Tadeu Costa, Paulo Angelo Fachin, Bruno Teixeira Ribeiro, Edivaldo Lopes Thomaz, Alberto Vasconcellos Inda Junior, Nilton Curi   +5 more
wiley   +1 more source

Dependência espacial da resistência do solo à penetração e do teor de água do solo sob cultivo contínuo de cana-de-açúcar Spatial variability of soil penetration resistance and soil moisture at different periods of sampling under sugarcane crop

Ciência Rural, 2006
O cultivo intensivo dos solos e a utilização de máquinas e equipamentos pesados promovem a compactação do solo. A resistência do solo à penetração é uma medida que detecta esta compactação, contudo ela é fortemente influenciada pelo teor de água no solo.
Zigomar Menezes de Souza, Milton César Costa Campos, Ítalo Hebert Lucena Cavalcante, José Marques Júnior, Luiz Gilberto Cesarin, Sandro Rogério de Souza   +5 more
doaj   +1 more source

Nd and Sr Isotopes and REE Investigation in Tropical Weathering Profiles of Amazon Region

Frontiers in Earth Science, 2022
The exceptional development of lateritic profiles make the Amazon one of the best places to conduct a refined study on the effects of long-term tropical climate on the Earth's surface rocks.
Adriana Maria Coimbra Horbe, Márcio Fernando Dos Santos Albuquerque, Elton Luiz Dantas   +2 more
doaj   +1 more source

Soil–Atmosphere Exchange of Nitrous Oxide, Nitric Oxide, Methane, and Carbon Dioxide in Logged and Undisturbed Forest in the Tapajos National Forest, Brazil [PDF]

, 2009
Selective logging is an extensive land use in the Brazilian Amazon region. The soil–atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol ...
Asner, Gregory P., Crill, Patrick M., de Oliveira, Raimundo Cosme, Jr., Dias, Jadson D., Keller, Michael, Silva, Hudson, Varner, Ruth K.   +6 more
core   +2 more sources