Results 61 to 70 of about 6,477 (225)

Genetic Parameters of Resilience Indicators Across Growth in Beef Heifers and Their Associations With Weight, Reproduction, Calf Performance and Pre‐Weaning Survival

Journal of Animal Breeding and Genetics, Volume 143, Issue 1, Page 79-91, January 2026.
ABSTRACT In tropical extensive beef cattle systems, heifers raised on pasture are exposed to various environmental challenges that affect their growth and reproductive performance during the first breeding. Resilience indicators derived from deviations in longitudinal traits can quantify the magnitude of these challenges and the ability of an animal to
Gustavo R. D. Rodrigues, Júlia P. S. Valente, Vanessa T. Rezende, Luis F. C. Araújo, João B. Silva Neto, Lúcio F. M. Mota, Mário L. Santana, Roberta C. Canesin, Sarah F. M. Bonilha, Lucia G. Albuquerque, Maria E. Z. Mercadante, Joslaine N. S. G. Cyrillo   +11 more
wiley   +1 more source

Soil Phosphorus Fractions: Effects of Silicate Amendments and Phosphorus Sources in Brazilian Tropical Soils

Journal of Sustainable Agriculture and Environment, Volume 4, Issue 4, December 2025.
ABSTRACT This study evaluated the effects of alternative phosphorus (P) sources and soil pH amendments on P fractions and soil chemical properties in two contrasting Brazilian tropical soils. A greenhouse experiment was conducted using a sandy Arenosol and a clayey Ferralsol treated with triple superphosphate (TSP), reactive phosphate (RP), or ...
Lucas Jónatan Rodrigues da Silva, Ana Paula Rodrigues da Silva, Tainah Caroline Arruda Alves de Lima, João Arthur Antonangelo, Dirceu Maximino Fernandes, Leonardo Theodoro Büll   +5 more
wiley   +1 more source

Modelos empíricos para estimar o acúmulo de matéria seca de capim marandu com variáveis agrometeorológicas. [PDF]

, 2013
O objetivo deste estudo foi testar modelos empíricos de regressão linear, para a predição do acúmulo de matéria seca (TAMS) de Urochloa brizantha cv. Marandu, em função de variáveis agrometeorológicas. Para gerar os modelos, foi utilizada a taxa média de
ARAUJO, L. C., CRUZ, P. G., OLIVEIRA, P. P. A., PEZZOPANE, J. R. M., SANTOS, P. M.   +4 more
core   +1 more source

Establishment of Urochloa brizantha cultivars intercropped with different cereal grains

Semina: Ciências Agrárias, 2015
<p>Crop-livestock integration is an alternative method of rehabilitating degraded pastures. The goal of the present study was to evaluate the initial responses of morphostructural characteristics of two different <em>Urochloa brizantha </em>cultivars grown in monocropping or intercropping systems over two agricultural years. <em>
Durval Nolasco Neves Neto, Antonio Clementino dos Santos, Luciano Fernandes Sousa, Perlon Maia dos Santos, Aridouglas dos Santos Araujo, Nayara Martins Alencar   +5 more
openaire   +3 more sources

Interferência de plantas daninhas em pastagem de Urochloa brizantha cv. Marandu [PDF]

Cultura Agronômica: Revista de Ciências Agronômicas, 2019
A determinação dos períodos de interferência torna-se necessário para delinear medidas de manejo de plantas daninhas em pastagens, principalmente quando a comunidade infestante interfere na produção de forragem. Assim, objetivou-se determinar os períodos de interferência de plantas daninhas na implantação da pastagem de Urochloa brizantha e avaliar a ...
Leandro Spíndola Pereira, Adriano Jakelaitis, Gustavo Silva de Oliveira, Gustavo Dorneles de Sousa, Jeovane Nascimento Silva, Estevam Matheus Costa   +5 more
openaire   +1 more source

Widespread negative effects of Leucaena leucocephala (white‐popinac) invasion on regenerating areas of the Atlantic Forest

Ecological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Fragment of Atlantic Forest (left) naturally regenerating in an abandoned pasture (centre) and being invaded by a large patch of white‐popinac (Leucaena leucocephala; right). This image summarizes the scenario of invasion by white‐popinac that is directly threatening forest regeneration and its native diversity.
Juliano Zardetto, Willian Simioni, Tadeu Siqueira   +2 more
wiley   +1 more source

Radiation use efficiency and peanut yield as affected by planting pattern and plant density in different crop systems

Agronomy Journal, Volume 117, Issue 5, September/October 2025.
Abstract Adjusting plant density and planting pattern are strategies to improve the production efficiency of Virginia‐type peanut (Arachis hypogaea L.), but little is known about their effects on radiation use efficiency (RUE), pod maturity, and pod yield.
Carlos Felipe dos Santos Cordeiro, Leonardo Vesco Galdi, Gilmar Santos Martins Junior, Alexandrius de Moraes Barbosa, Fábio Rafael Echer   +4 more
wiley   +1 more source

Ciclagem de nutrientes por plantas de cobertura e produtividade de soja e arroz em plantio direto

Pesquisa Agropecuária Brasileira, 2013
O objetivo deste trabalho foi avaliar a ciclagem de nutrientes por plantas de cobertura e a sua influência sobre o desempenho da rotação entre arroz de terras altas e soja.
Leandro Pereira Pacheco, Juliano Magalhães Barbosa, Wilson Mozena Leandro, Pedro Luiz Oliveira de Almeida Machado, Renato Lara de Assis, Beáta Emoke Madari, Fabiano André Petter   +6 more
doaj   +1 more source

Potencial alelopático de cultivares de urochloa brizantha sobre gramíneas com e sem tolerância ao glyphosate [PDF]

, 2019
O uso do glyphosate no manejo de plantas daninhas em culturas RR vem sendo quase sempre exclusivo e, somado à adoção desse sistema ao longo de vários anos, vem aumentando a pressão de seleção sobre as plantas daninhas.
IKEDA, F. S., MENEGATTI, L.
core  

Insights on the Potential of Natural Regeneration to Restore Cerrado Open Ecosystems

Austral Ecology, Volume 50, Issue 9, September 2025.
The colonisation potential of native Cerrado species in degraded areas will depend on the remaining underground structures and not on seed rain from nearby conserved remnants. Effective restoration of the Cerrado will not be possible without active restoration, if the bud‐bank are not present in the system.
Bethina Stein, Natashi Pilon, Demetrius Lira‐Martins, Lucy Rowland, Rafael S. Oliveira   +4 more
wiley   +1 more source