Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Leônidas Carrijo Azevedo Melo"'
Biochar-boron composites: synthesis, properties and agronomic effectiveness for eucalyptus seedlings
Publikováno v:
Chemical and Biological Technologies in Agriculture, Vol 11, Iss 1, Pp 1-20 (2024)
Abstract Introduction Boron (B) is critical for plant growth, yet its movement in soil is often hindered by leaching and adsorption, leading to deficiencies. Tackling these issues is essential for boosting agricultural productivity, especially in pla
Externí odkaz:
https://doaj.org/article/a3c58aacfaa842dcb8758fd594e6e610
Autor:
Everton Geraldo de Morais, Carlos Alberto Silva, Suduan Gao, Leônidas Carrijo Azevedo Melo, Bruno Cocco Lago, Jéssica Cristina Teodoro, Luiz Roberto Guimarães Guilherme
Publikováno v:
Nitrogen, Vol 5, Iss 2, Pp 288-300 (2024)
Much progress has been made in understanding the conditions of biochar production related to biochar properties and carbon (C). Still, very little knowledge has been gained regarding the effects on nitrogen (N), one of the most critical nutrients aff
Externí odkaz:
https://doaj.org/article/68dcb8cf6d514a3ca5927426138b8c01
Autor:
Hercília Samara Cardoso Costa, Edna Santos de Souza, Yan Nunes Dias, Leônidas Carrijo Azevedo Melo, Antonio Rodrigues Fernandes
Publikováno v:
Minerals, Vol 12, Iss 2, p 150 (2022)
Growing environmental pollution in recent decades has been generating potentially toxic elements (PTE) which pose an ongoing threat to terrestrial and aquatic ecosystems and human health, especially in mining areas. Biochar and PTE-tolerant species h
Externí odkaz:
https://doaj.org/article/a08b36471c8043019bc2b4b1f8c62e1b
Autor:
Sarah Vieira Novais, Edson Marcio Mattiello, Leonardus Vergutz, Leônidas Carrijo Azevedo Melo, Írio Fernando de Freitas, Roberto Ferreira Novais
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 39, Iss 4, Pp 1079-1087 (2015)
The Mehlich-1 (M-1) extractant and Monocalcium Phosphate in acetic acid (MCPa) have mechanisms for extraction of available P and S in acidity and in ligand exchange, whether of the sulfate of the extractant by the phosphate of the soil, or of the pho
Externí odkaz:
https://doaj.org/article/d88800d8bf304cc4b1e6d97cfbc6dc97
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 38, Iss 6, Pp 1939-1949 (2014)
Phytotoxicity and transfer of potentially toxic elements, such as cadmium (Cd) or barium (Ba), depend on the availability of these elements in soils and on the plant species exposed to them. With this study, we aimed to evaluate the effect of Cd and
Externí odkaz:
https://doaj.org/article/c03bbf17c1384550b3fb0dd36e679fcb
Autor:
Otacílio José Passos Rangel, Carlos Alberto Silva, Paulo Tácito G. Guimarães, Leônidas Carrijo Azevedo Melo, Antônio Claret de Oliveira Junior
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 32, Iss 5, Pp 2051-2059 (2008)
A densidade de plantio e o arranjo das plantas exercem influência sobre a produção de resíduos vegetais nos agroecossistemas cafeeiros. Esse aporte diferenciado de resíduos regula os teores de C e N do solo. Este trabalho objetivou avaliar os te
Externí odkaz:
https://doaj.org/article/348b8a85de6e429cacf4dcaf49b26382
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 32, Iss 1, Pp 101-110 (2008)
Vários fatores controlam a velocidade de decomposição e a liberação de nutrientes por resíduos orgânicos. Dentre esses fatores, destacam-se o grau de humificação e a natureza química dos resíduos. Com este trabalho, objetivou-se caracteriz
Externí odkaz:
https://doaj.org/article/0e8673caf2f74e0dacaa89c19244e041
Publikováno v:
Química Nova, Vol 31, Iss 3, Pp 556-561 (2008)
The influence of nitric-perchloric, aqua regia, dry ashing and microwave digestion methods, in combination with 100 and 200 mg of sample, on the characterization and recovery of nutrients in samples of sludge sewage, poultry, swine, quail and bovine
Externí odkaz:
https://doaj.org/article/68734087dcf64a218d9db7c902a0bddc
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 30, Iss 5, Pp 869-878 (2006)
A movimentação dos produtos da dissolução do calcário e a correção da acidez podem ser influenciadas pelo manejo da calagem e pela quantidade e qualidade da matéria orgânica presente no solo. Avaliou-se a correção da acidez de acordo com a
Externí odkaz:
https://doaj.org/article/786b0c62f278432a80092033e66ca2e2
Autor:
Carlos Alberto Silva, Leônidas Carrijo Azevedo Melo, Otacílio José Passos Rangel, Paulo Tácito G Guimarães
Publikováno v:
Ciência e Agrotecnologia, Vol 28, Iss 5, Pp 1066-1076 (2004)
Com este estudo, teve-se por objetivo avaliar os efeitos de densidades de plantio e de manejo da calagem sobre os atributos de fertilidade de Latossolo e sobre o estado nutricional e produtividade do cafeeiro (Coffea arabica L.). O estudo foi conduzi
Externí odkaz:
https://doaj.org/article/f8682a1790d8488c8a4c4dbed7b1e901