Results 21 to 30 of about 8,065 (215)

Opal phytolith extraction in oxisols [PDF]

Quaternary International, 2013
Peer ...
Calegari, Marcia R., Madella, Marco, Vidal Torrado, Pablo, Otero, Xosé Luis, Macías, Felipe, Osterrieth, M.   +5 more
openaire   +2 more sources

Variabilidad espacial de atributos físicos de un Typic Haplustox de los Llanos Orientales de Colômbia Spatial variability of physical attributes in a typic haplustox in the eastern planes of Colombia

Engenharia Agrícola, 2008
O objetivo deste trabalho foi estudar o comportamento da variabilidade espacial da resistência mecânica à penetração (RP), da densidade do solo, da densidade de partículas do solo, da porosidade total e dos teores de areia, silte e argila, e as relações ...
Leonardo Ramírez-López, Amparo Reina-Sánchez, Jesús H. Camacho-Tamayo   +2 more
doaj   +1 more source

AUSÊNCIA DE MICORRIZAS VESÍCULO-ARBUSCULARES EFETIVAS EM LECYTHIDACEAS NUMA ÁREA DE FLORESTA PRIMÁRIA DA AMAZÔNIA CENTRAL. [PDF]

Acta Amazonica, 1997
As Lecythidaceae compreendem uma das quatro famílias de árvores mais abundantes na floresta amazônica, mas foram pouco estudadas no que sc refere à simbiose com fungos micorrízicos dos solos.
F.W. MOREIRA, L.A. de OLIVEIRA, P. BECKER   +2 more
doaj   +1 more source

SPATIAL AUTOCORRELATION OF PHYSICAL ATTRIBUTES OF AN OXISOL [PDF]

Engenharia Agrícola, 2021
ABSTRACT Studies that seek to identify a smaller number of soil attributes that represent others can generate less expenditure of time and financial resources for monitoring cultivated areas. Thus, this study aimed to analyze the spatial distribution and spatial autocorrelation of physical attributes of an Oxisol (Latossolo Vermelho Amarelo, Brazilian ...
Job T. de Oliveira, Rubens A. de Oliveira, Fernando F. da Cunha, Eduardo S. dos Santos   +3 more
openaire   +4 more sources

The Diversity of Phaseolus-Nodulating Rhizobial Populations Is Altered by Liming of Acid Soils Planted with Phaseolus vulgaris L. in Brazil [PDF]

, 2002
PCR-mediated restriction fragment length polymorphism (RFLP) analysis of the 16S-23S rRNA internally transcribed spacer (ITS) region and the 16S rRNA gene indicated that the rhizobial populations isolated from common bean (Phaseolus vulgaris L.) nodules ...
Andrade, D.S., Giller, K.E., Murphy, P.J.   +2 more
core   +1 more source

Variabilidade espacial de atributos químicos e produtividade da cultura do café em duas safras agrícolas Spatial variability of chemical attributes and coffee productivity in two harvests

Ciência e Agrotecnologia, 2008
O emprego da Agricultura de Precisão pode ser uma das alternativas para o país continuar com a liderança mundial de café, por meio da competitividade nos custos e na qualidade do produto.
Fábio Moreira da Silva, Zigomar Menezes de Souza, Carlos Augusto Pereira de Figueiredo, Luciano Henrique de Souza Vieira, Ezequiel de Oliveira   +4 more
doaj   +1 more source

Organic residues and Parachlorella microalgae favor the growth and gas exchange of cedar [PDF]

Scientia Agricola
Using organic residues and bioinputs is a promising and sustainable practice to produce seedlings with forest essences, such as Cedrela fissilis Vell. (cedar), a vulnerable species close to extinction due to intensive exploitation in native areas.
Cleberton Correia Santos, Mauricio Lacerda de Oliveira, Dágon Manoel Ribeiro, Silvana de Paula Quintão Scalon, Jéssica Aline Linné, Juliana Milene Silverio, Vanda Maria de Aquino Figueiredo, Otávio Henrique Medina da Silva   +7 more
doaj   +1 more source

Oxyfluorfen and Linuron: Residual Effect of Pre-Emergence Herbicides in Three Tropical Soils

Agrochemicals, 2023
Knowledge about the residual effect of herbicides is important in order to increase agronomic efficacy and reduce environmental problems. Therefore, the objective of this study was to evaluate the residual effect of oxyfluorfen and linuron in three soils.
Dilma F. de Paula, Guilherme A. de P. Ferreira, Tiago Guimarães, Maura G. da S. Brochado, Leandro Hahn, Kassio F. Mendes   +5 more
doaj   +1 more source

Response of Brassica rapa var. parachinensis grown on copper contaminated Oxisol, Inceptisol and Histosol [PDF]

, 2013
Copper (Cu) plays a key role in plant physiological and biochemical function but is harmful to plants when in excess. Copper availability is influenced by the mineralogical and chemical properties of soils.
Ishak, Che Fauziah, Ahmad, Osumanu Haruna, Hani, Nurul Wahida, Abdul Rahim, Anuar   +3 more
core   +2 more sources

Pengaruh Kompos, Bahan Humat dari Batubara tidak produktif dan Pupuk Buatan Terhadap Bibit Kakao (Theobroma cacao) pada Oxisol

Jurnal Riset Perkebunan, 2022
Organic matter has a very important role in determining the level of soil fertility, especially in marginal soils such as Oxisol which is widespread in Indonesia.
Dewi rezki, Siska Efendi, Herviyanti
doaj   +1 more source