Results 51 to 60 of about 3,975 (175)

VARIABILIDADE GENÉTICA EM ACESSOS DE TRAPOERABA (COMMELINA BENGHALENSIS L.)

Arquivos do Instituto Biológico, 2007
RESUMO Com o objetivo de determinar a existência de variabilidade genética em plantas de trapoeraba (Commelina benghalensis L.), foram coletadas plantas em 10 diferentes regiões de quatro Estados do Brasil (SP, MG, MT e MS). Esses acessos foram submetidos a um estudo de variabilidade genética por meio de RAPD com 35 iniciadores arbitrários, os quais ...
Vieira, V.c., Alves, P.l.c.a., Lemos, M.v.f., Sena, J.a.d.   +3 more
openaire   +5 more sources

Update of the Xylella spp. host plant database – Systematic literature search up to 30 June 2025

EFSA Journal, Volume 24, Issue 1, January 2026.
Abstract This scientific report provides an update of the Xylella spp. host plant database, aiming to provide information and scientific support to risk assessors, risk managers and researchers dealing with Xylella spp. Upon a mandate of the European Commission, EFSA created and regularly updates a database of host plant species of Xylella spp.
European Food Safety Authority (EFSA), Vincenzo Cavalieri, Elisa Fasanelli, Giandomenico Furnari, Davide Gibin, Alicia Gutierrez Linares, Pierfederico La Notte, Luca Pasinato, Giuseppe Stancanelli   +8 more
wiley   +1 more source

Comportement des mauvaises herbes dans un système de culture en couloirs (Haies de Leucaena leucocephala (Lam) de Wit) [PDF]

, 1996
Afin de caractériser l'enherbement, des relevés floristiques pondérés ont été effectués en 1990 et 1991 sur un essai de cultures en couloirs. Dans cet essai, installé depuis 1986 à Bouaké (Côte d'Ivoire), le maïs et le cotonnier sont exploités en l ...
Doumbia, Salif, Marnotte, Pascal, Tehia Kouakou, E.   +2 more
core  

Interferência de plantas daninhas na cultura do sorgo sacarino. [PDF]

, 2019
Este trabalho teve como objetivo o estudo fitossociológico da comunidade infestante ao longo do ciclo de desenvolvimento do sorgo sacarino e a determinação do período crítico de prevenção à interferência das plantas daninhas na cultura.
GALON, L., KARAM, D., MAY, A., PETTER, F. A., SILVA, A. F. da, SILVA, C., VALE, W. G. do   +6 more
core   +1 more source

A Deep Metagenomic Snapshot as a Proof‐of‐Concept for Resource Generation: Simultaneous Assembly of Host, Food, and Microbiome Genomes From Stingless Bee Larval Food

Ecology and Evolution, Volume 15, Issue 12, December 2025.
This study serves as a proof‐of‐concept, demonstrating that deep shotgun sequencing of a single complex sample—stingless bee larval food—can simultaneously generate multiple genomic resources. From this dataset, we assembled three genomes (a near‐complete bacterium, a draft host mitochondrion, and a fragmented plant chloroplast) with varying ...
Carlos Ueira‐Vieira, Ana Carolina Costa Santos, Thayane Nogueira Araújo, Solange Cristina Augusto, Natanael Borges de Avila, Ana Maria Bonetti, Anderson Rodrigues dos Santos   +6 more
wiley   +1 more source

Glifosato aplicado com diferentes concentrações de uréia ou sulfato de amônio para dessecação de plantas daninhas Glyphosate applied with different concentrations of urea or ammonium sulfate for weed desiccation

Pesquisa Agropecuária Brasileira, 2008
Este trabalho foi desenvolvido com o objetivo de avaliar a eficácia do herbicida glifosato, para a dessecação de trapoeraba (Commelina benghalensis) e outras plantas daninhas, quando combinado a diferentes concentrações de sulfato de amônio ou uréia ...
Saul Jorge Pinto de Carvalho, Ana Carolina Ribeiro Dias, Virginia Damin, Marcelo Nicolai, Pedro Jacob Christoffoleti   +4 more
doaj   +1 more source

Dinâmica populacional de plantas daninhas na cultura do milho em função de adubação e manejo. [PDF]

, 2011
O objetivo do trabalho foi avaliar o estabelecimento populacional das comunidades das plantas daninhas, durante seis anos agrícolas consecutivos de milho cultivado no sistema plantio direto orgânico e tradicional, intermediado por um sistema de plantio ...
Corrêa, Maria Lita Padinha, Ferreira, Lino Roberto, Fontanetti, Anastácia, Galvão, João Carlos Cardoso, Miranda, Glauco Vieira   +4 more
core   +3 more sources

Anthropogenic Disturbances and Invasion of Mikania micrantha Threaten Rauvolfia serpentina Populations in Nepal

Ecology and Evolution, Volume 15, Issue 12, December 2025.
This research article investigate the current population dynamics of a threatened medicinal plant Rauvolfia serpentina.in differentially disturbed region of tropical forest in eastern Nepal. The findings revealed the cumulative impacts of over exploitation and invasion of Mikania micrantha have negatively impacted the population dynamics of R ...
Ajay Neupane, Bikram Jnawali, Suresh Kumar Ghimire   +2 more
wiley   +1 more source

Off‐season crops as a strategy for renovating degraded pastures and improving maize yield in a low‐altitude tropical region

Agronomy Journal, Volume 117, Issue 6, November/December 2025.
Abstract Brazil can expand cultivated areas without deforestation by restoring degraded pastures and optimizing grain production through off‐season crops. This study evaluated eight off‐season treatments, including fallow, monocrops, and intercropping combinations, and their effects on maize (Zea mays L.) intercropped with guinea grass (Megathyrsus ...
Sarah V. Pedrão, Job T. Oliveira, Otávio M. Correa, Aline O. Silva, Aline O. Matoso, Marco A. C. Carneiro, Eric van Cleef, Flávio H. Kaneko   +7 more
wiley   +1 more source

Changes in weeding practices in the cotton-growing zone of Northern Cameroon [PDF]

, 2001
During the rainy season, farmers in the West African cotton belt concentrate their physical and financial efforts on attempting to control weeds. Their priorities at the start of the season are sowing and weeding food crops; the plots intended for cotton
Gaudard, Lucien, Martin, José
core