Results 31 to 40 of about 503,153 (162)

Efeito de doses de herbicida inibidor de fotossitema II em plântulas de Brachiaria decumbens spp.

open access: yesRevista Agrogeoambiental, 2015
Por meio deste trabalho buscou-se avaliar o controle de sementes Brachiaria decumbens com o uso de diferentes doses de herbicida pré-emergente. Os experimentos foram conduzidos no Laboratório de Fitotecnia da Universidade Camilo Castelo Branco, foram ...
Kathery Brennecke   +3 more
doaj   +1 more source

Biochemical Responses of Anopheles spp. Larvae to a Novel Brazilian BR101 Bacillus thuringiensis var. israelensis Formulation: Oxidative Stress, Detoxification Enzymes, and Safety for Nontarget Notonectidae and Gerridae Aquatic Insects

open access: yesChemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Bti BR101 exhibits strong larvicidal activity against Anopheles larvae spp., with dose‐dependent mortality and LC50 of 3.13 µg/mL. Bti increases ROS, lipid and protein oxidation, and activates antioxidant enzymes (SOD, CAT, GPx) and detoxification pathways (MFO and esterases), indicating moderate oxidative stress.
Izabel Cristina de Oliveira Bentes   +14 more
wiley   +1 more source

Controle de Qualidade e triagem fitoquímica da droga vegetal das folhas de Morus nigra L. (MORACEAE)

open access: yesRevista de Ciências Farmacêuticas Básica e Aplicada, 2015
Uma rigorosa análise de controle de qualidade é uma das etapas na produção de fitoterápicos. Devido a escassez de estudos sobre Morus nigra L. (MORACEAE), mais conhecida como amora, este trabalho teve como objetivo o controle de qualidade das folhas da ...
Pedro Luis Guizzo   +3 more
doaj  

Sustainable control of Dalbulus maidis: A field study with entomopathogenic fungi

open access: yesEntomologia Experimentalis et Applicata, Volume 173, Issue 11, Page 1156-1164, November 2025.
Dalbulus maidis, a plant pathogen vector, poses a serious threat to maize production and food security. We investigated the potential synergistic effects between formulations based on entomopathogenic fungi and corn hybrids with varying resistance to maize stunt complex and Maize rayado fino virus. The combined management of M. anisopliae + B. bassiana
Priscilla T. N. Maia   +8 more
wiley   +1 more source

Potential of chemical insecticides on fourth larvae instar of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

open access: yesDiversitas Journal, 2023
Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) is an important pest of Brazilian agriculture, whose management is oriented mainly towards controlling larvae.
Leonardo Gazoli   +1 more
doaj   +1 more source

Testing the contribution of vertebrate predators and leaf traits to mainland–island differences in insect herbivory on oaks

open access: yesJournal of Ecology, Volume 113, Issue 1, Page 140-154, January 2025.
The authors explored how insularity influences herbivory in oaks across island–mainland sites. By experimentally excluding vertebrate predators (e.g. birds, bats) and measuring leaf traits (e.g. phenolics, specific leaf area, nutrients), they provide insights into the mechanisms driving island–mainland herbivory patterns.
Carla Vázquez‐González   +14 more
wiley   +1 more source

High methane concentrations in tidal salt marsh soils: Where does the methane go?

open access: yesGlobal Change Biology, Volume 30, Issue 1, January 2024.
Salt marsh soils can contain high concentrations of methane, but what happens to this gas? There are a few possibilities, including vertical and lateral transport, storage within the soil, and/or oxidation resulting in transport as carbon dioxide or dissolved inorganic carbon.
Margaret Capooci   +8 more
wiley   +1 more source

Eficácia de diferentes inseticidas e de volumes de calda no controle de Spodoptera frugiperda nas culturas do milho e sorgo cultivados em várzea [PDF]

open access: yesCiência Rural, 2005
A lagarta-do-cartucho Spodoptera frugiperda (J. E. Smith, 1797) tem causado prejuízos significativos à produtividade nas culturas do milho e sorgo, principalmente em áreas de várzeas.
Marcus Antônio Gonçalves Costa   +5 more
doaj   +1 more source

Controle químico de assa-peixe (Vernonia Polyanthes) em pastagens. [PDF]

open access: yes, 1994
Controle químico de assa-peixe (Vernonia Polyanthes) em ...
COELHO, R. R, RASSINI, J. B.
core  

CONTROLE QUIMICO DE CONYZA BONARIENSIS EM DESSECAÇÃO

open access: yesRevista de Agricultura Neotropical, 2015
A buva (Conyza bonariensis) é uma das principais plantas infestantes no agroecossistema brasileiro, demandando novas alternativas de manejo a cada safra.
Rafael da Costa Leite   +3 more
doaj   +1 more source

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