Results 1 to 10 of about 10,849 (144)

Diversity and genetic structure of jenipapo (Genipa americana L.) Brazilian accessions

open access: yesScientia Agricola, 2014
Usually known as jenipapo, Genipa americana L. is a Rubiaceae Brazilian native species. It is an important species in the restoration of Brazilian riparian forests and is one of the most promising fruit trees for sustainable harvesting programs.
Ana Veruska Cruz da Silva   +3 more
doaj   +1 more source

Avaliação de espécies leguminosas na formação de cafezais no segmento da agricultura familiar no Acre [PDF]

open access: yesActa Amazonica, 2006
Leguminosas quando consorciadas com o café e usadas como adubação verde podem contribuir fornecendo nitrogênio e proteção ao solo pela adição de matéria orgânica.
Celso Luis Bergo   +3 more
doaj   +1 more source

Eficiência de conversão da radiação fotossinteticamente ativa incidente em biomassa aérea da vegetação campestre natural no bioma Campos Sulinos do Brasil [PDF]

open access: yesCiência Rural, 2006
Neste trabalho, foi calculada, para os diferentes meses da principal estação de crescimento da vegetação, a eficiência de conversão da radiação fotossinteticamente ativa incidente na biomassa aérea para a vegetação campestre natural do bioma Campo Sulino.
Eliana Lima da Fonseca   +2 more
doaj   +1 more source

Chrysoperla externa (Neuroptera: Chrysopidae) as a Potential Biological Control Agent of Raoiella indica (Acari: Tenuipalpidae)

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 4, Page 335-342, April 2026.
First and third instar Chrysoperla externa showed efficient predatory capacity at low R. indica density, but second instar C. externa exhibits a density‐dependent predatory ability. The lacewing C. externa shows promise as a biocontrol agent for R. indica in coconut because it consumed 8362 R. indica females across all its larval instars.
Luis O. Viteri   +6 more
wiley   +1 more source

Pollen grain viability of coconut accessions at low temperatures

open access: yesActa Scientiarum. Agronomy, 2014
The aim of this study was to evaluate the storage potential of the pollen grains of Brazil Green Dwarf (BGD), Brazilian Tall (BRA) and Cameroon Red Dwarf (CRD) coconut accessions under different storage conditions.
Caroline De Araújo Machado   +5 more
doaj   +1 more source

Callogenesis and Morphohistological Characterization of Hancornia speciosa Gomes

open access: yesColombia Forestal, 2023
Hancornia speciosa Gomes belongs to the family Apocynaceae and is distributed across different regions of Brazil. The objective of this study was to evaluate callus induction and histodifferentiation in five mangaba accessions under different in vitro ...
Ana da Silva Ledo   +5 more
doaj   +1 more source

Effect of land use change on Melolonthidae (Coleoptera: Scarabaeoidea) beetle communities in the deforestation arc of the Brazilian Amazon

open access: yesInsect Conservation and Diversity, Volume 19, Issue 2, Page 404-419, March 2026.
Habitat transformation in Amazon due to agriculture expansion impairs Melolonthidae diversity. Assemblage response towards habitat transformation are group‐dependent. Although highly disturbed, Amazon arc of deforestation region dwells sensitive insect assemblages. Abstract Although the Amazon provides crucial goods and ecosystem services for humanity,
Kleyton Rezende Ferreira   +4 more
wiley   +1 more source

O trabalho familiar extrativista sob a influência de políticas públicas

open access: yesRevista de Economia e Sociologia Rural, 2014
O artigo analisa a relação entre a organização do trabalho familiar no extrativismo e a participação em programas de políticas públicas no estado de Sergipe.
Dalva Maria da Mota   +3 more
doaj   +2 more sources

Identification and preliminary characterization of early fruiting mangabeira (Hancornia speciosa – Apocynaceae)

open access: yesAgro@mbiente On-line, 2019
The mangabeira (Hancornia speciosa G.) is a native Brazilian species in the process of domestication. It has several potential uses. In recent years the populations of mangabeira have become fragmented and, to conserve their genetic resources, Embrapa ...
Ana Veruska Cruz Silva   +5 more
doaj   +1 more source

Geoprocessamento e sensoriamento remoto aplicados à análise de recursos florestais [PDF]

open access: yesCiência Rural, 2004
Este trabalho tem como objetivo apresentar uma proposta metodológica para o levantamento e análise dos recursos florestais dos povoamentos naturais e implantados, obtido através da utilização de técnicas de geoprocessamento e sensoriamento remoto e ...
Édson Luis Bolfe   +2 more
doaj   +1 more source

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