Results 21 to 30 of about 66,390,048 (156)

Varied motivations for secondary forest reclearing among landholders make forest persistence challenging

open access: yesPeople and Nature, Volume 8, Issue 6, Page 1943-1956, June 2026.
Abstract Remote sensing studies show that ephemeral forest regeneration is widespread in the tropics, limiting the climate and biodiversity benefits from net increases in forest cover. Socioeconomic, biophysical and landscape variables can help explain the spatial distribution of reforestation reversals.
Francis H. Joyce
wiley   +1 more source

Malezas en cultivos de Colima: Un enfoque florístico y ecológico

open access: yesAIA Avances en Investigación Agropecuaria, 2022
Introducción. Las malezas constituyen un grupo ecológico y económicamente importante debido a que pueden provocar pérdidas monetarias. Sin embargo, este gremio también tiene aspectos positivos; por ejemplo, pueden ayudar a mantener poblaciones estables ...
Carlos Luis Leopardi Verde
doaj   +1 more source

Capybaras (Hydrochoerus hydrochaeris) Generate Grazing Lawns and Maintain Plant Diversity in Neotropical Savanna

open access: yesApplied Vegetation Science, Volume 28, Issue 1, January/March 2025.
We show that excluding native grazers from a South American grassy ecosystem leads to strong declines in plant species richness over an 18‐month period. Our results imply that severely defaunated South American ecosystems have retained plant taxa and functional trait complexes that can tolerate intense herbivory, identifying herbivore reintroductions ...
Julia C. Mata   +6 more
wiley   +1 more source

Control de malezas en algodón [PDF]

open access: yes, 1973
Debido al daño que causan las malezas en los algodonales se hace necesario su control para obtener mejores resultados. Se advierte que si durante los primeros 40 días no se controlan las malezas, los rendimientos disminuyen en un 30 por ciento.
Lagos, Edilberto   +3 more
core  

¿Libre de la Maleza Estatista? Assessing Neoliberal Promises and Water Markets in Chile

open access: yesEarth's Future, Volume 12, Issue 10, October 2024.
Abstract Neoliberal approaches to water governance, pioneered in Chile in the 1980s, are reappearing today on the centerstage of the water policy debate. While advocates claim that strong property rights, limits on government authority, and water markets can enhance environmental sustainability, efficiency, neutrality, and equity in the distribution of
Benji Reade Malagueño, Paolo D'Odorico
wiley   +1 more source

Nuevos hospederos alternativos de begomovirus asociados al cultivo de ají en el Valle del Cauca.

open access: yesActa Agronómica, 2019
Los begomovirus (virus de plantas de DNA de cadena sencilla) son la principal amenaza para los cultivos que crecen en áreas subtropicales y tropicales de todo el mundo. Hay muchos estudios que han demostrado que los begomovirus evolucionan por mecanismos
Juan Carlos Vaca-Vaca   +4 more
doaj   +1 more source

Blowin’ in the Wind: Mapping the Dispersion of Metal(loid)s From Atacama Mining

open access: yesGeoHealth, Volume 8, Issue 10, October 2024.
Abstract The Atacama Desert’s naturally elevated metal(loid)s pose a unique challenge for assessing the environmental impact of mining, particularly for indigenous communities residing in these areas. This study investigates how copper mining influences the dispersion of these elements in the wind‐transportable fraction (<75 μm) of surface sediments ...
Nicolás C. Zanetta‐Colombo   +9 more
wiley   +1 more source

El control de malezas en cultivos de maíz orgánico en la siembra directa

open access: yes, 2019
One of the main difficulties in the organic, no-tillage system is weed management. The aim of this study was to evaluate the effect of the association between mechanical and cultural control methods (reduction of spacing and consortium with Canavalia ...
Dos Santos, Dayane Graziella Pereira De Oliveira [UNESP]   +3 more
core   +1 more source

Efecto de rastrojos de malezas y herbicidas preemergentes en el control de malezas en frijol.

open access: yesAgronomía Mesoamericana, 2006
In the Fabio Baudrit Experiment Station, Alajuela, Costa Rica from September of 1998 to February of 1999, the effects of stubbles from Ixophorus unisetus, Digitaria spp., Cynodon dactylon and Rottboellia cochinchinensis were evaluated to judge the efficacy of the herbicide pendimetalin, alachlor and imazetapir, Rhizobium nodulation and the growth of ...
openaire   +4 more sources

Efectividad biológica de pentoxamida y piroxasulfune, flutiacet metil en el control preemergente de malezas en maíz en valle de Mexicali Baja California

open access: yesAIA Avances en Investigación Agropecuaria
Introducción. El maíz es potencialmente importante para Mexicali, Baja California; ocupa una superficie de 2 290.5 ha con rendimiento de 11.47 t/ha, el cual registró un valor de producción de 139 893.55 miles de pesos durante los ciclos otoño-invierno y ...
Andrés González Ruiz   +6 more
doaj   +1 more source

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