Results 31 to 40 of about 8,065 (215)

Ecological aspects of Bacillus thuringiensis in an Oxisol [PDF]

Scientia Agricola, 2003
Bacillus thuringiensis is a Gram positive, sporangial bacterium, known for its insecticidal habilities. Survival and conjugation ability of B. thuringiensis strains were investigated; vegetative cells were evaluated in non-sterile soil. Vegetative cells decreased rapidly in number, and after 48 hours the population was predominantly spores.
Ferreira, Lessandra Heck Paes Leme, Suzuki, Marise Tanaka, Itano, Eiko Nakagawa, Ono, Mário Augusto, Arantes, Olívia Márcia Nagy   +4 more
openaire   +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

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

Sorption and mobility of thiabendazole in a Brazilian Oxisol [PDF]

Ciência e Natura, 2020
Thiabendazole is a benzimidazole class drug that is widely used due to its vermifugal and fungicidal properties. The present study investigates the behaviour of TBZ in the A and B horizons of a Red-Yellow Latosol typical of southern Minas Gerais State, Brazil.
Bianca Veloso Goulart, Wallace Nikolas dos Santos Nascimento, Ana Carolina Pinto, Patrícia Maralyne Lopes Lisboa Fagundes, Larissa Silva Maciel, Maria Inês Nogueira Alvarenga, Márcia Matiko Kondo   +6 more
openaire   +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

Organic Matter Quality and Microbial Activity in Soils Managed With Brachiaria Succession

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Although succession systems and brachiaria improve soil quality, gaps remain in microbial community dynamics, activity, and soil organic matter stocks. Methods The objective was to evaluate the carbon (C) and nitrogen (N) stocks of soil organic matter fractions and their distribution, molecular characterization, enzyme activity ...
Siro Paulo Moreira, Vanessa Maria de Souza Barros, David Gabriel Campos Pereira, Humberto Josué de Oliveira Ramos, Eric Batista Ferreira, Teogenes Senna de Oliveira   +5 more
wiley   +1 more source

Innovations in polysaccharide‐based hydrogels in sustainable agriculture

Polymer International, EarlyView.
Polysaccharide‐based hydrogels are promising in sustainable agriculture, as these natural polymers have the ability to absorb water and nutrients and release them gradually in the soil, in addition to ensuring biodegradability and lower cost. However, some challenges still need to be overcome.
Marcia Leticia Monteiro Gomes, Josiély de Souza Martins, Cid Naudi Silva Campos, Dthenifer Cordeiro Santana, Rafael Felippe Ratke, Paulo Eduardo Teodoro, Edvani Curti Muniz, Edson Cavalcante Silva‐Filho, Josy Anteveli Osajima, Florisvaldo Clementino Santos Filho, Lucas Ferraz dos Santos, Maria Del Mar Orta Cuevas, Larissa Pereira Ribeiro Teodoro   +12 more
wiley   +1 more source

Imazaquin sorption in surface and subsurface soil samples Sorção do imazaquin em amostras de solos superficiais e subsuperficiais

Pesquisa Agropecuária Brasileira, 2006
The objective of this work was to study the sorption and desorption of imazaquin, in surface and subsurface soil samples from Brazil. Sorption and desorption steps were carried out using batch equilibration and high performance liquid chromatography ...
Maurílio Fernandes de Oliveira, Hélio Teixeira Prates, Derli Prudente Santanna, Rubem Silvério de Oliveira Júnior   +3 more
doaj   +1 more source

Chlorantraniliprole: bioactivation in coffee seedlings and control of resistant Leucoptera coffeella populations

Pest Management Science, EarlyView.
Chlorantraniliprole enhanced growth and biomass in coffee seedlings infested by susceptible Leucoptera coffeella, while resistant populations limited its insecticidal performance. These findings emphasize both the bioactivator potential of chlorantraniliprole and the challenges of managing resistance in coffee leaf miner control.
Beatriz Sousa Coelho, Suzany Aguiar Leite, Mateus Pereira dos Santos, Paulo Vitor Coutinho Rocha, Naira Martins Prado, Nebsa da Silva Sousa, Sylvana Naomi Matsumoto, Raul Narciso Carvalho Guedes, Maria Aparecida Castellani, Aldenise Alves Moreira   +9 more
wiley   +1 more source

Dispersão de argila em microagregados de solo incubado com calcário Clay dispersion in microaggregates of soil incubated with limestone

Revista Brasileira de Ciência do Solo, 2008
A compactação do solo restringe o rendimento de culturas de grãos. Dentre outros fatores, a calagem pode favorecer a dispersão de microagregados e a formação de camadas compactadas.
Silvio Tulio Spera, José Eloir Denardin, Pedro Alexandre Varella Escosteguy, Henrique Pereira dos Santos, Enrique Alberto Figueroa   +4 more
doaj   +1 more source