Results 51 to 60 of about 16,500 (221)

Climate requirements for cultivated Liberica coffee (Coffea liberica) and consequences for its use and development as a crop species

PLANTS, PEOPLE, PLANET, EarlyView.
The global coffee industry, supporting 25 million smallholder farmers, is vulnerable to climate change. Diversifying the coffee species portfolio beyond Arabica and robusta is a promising intervention. Liberica coffee could provide adaptive capacity, although its climate parameters for cultivation are poorly known.
Isobel M. J. Wild, Aaron P. Davis, Kenny Wee Ting Lee, Justin Moat   +3 more
wiley   +1 more source

Effect of Dormancy Treatment on Germination of Arabica Coffee ( Coffea arabica L.)

JURNAL AGROTEKNOLOGI, 2022
The germination process of arabica coffee bean takes a fairly longtime, due to semi-permeable skin against water. Dormancy treatment needs to improve germination rate of coffee beans before planting. The research was conducted at The Compost Centre of Agriculture Faculty, University of Sumatera Utara from July – September 2018 using a Randomized ...
null Irmansyah, null Irsal
openaire   +1 more source

Control failure risk, resistance and enzymatic activity of neurotoxic insecticides in Brazilian populations of Leucoptera coffeella (Lepidoptera: Lyonetiidae)

Pest Management Science, EarlyView.
Bioassays of 36 Leucoptera coffeella populations revealed resistance to neurotoxic insecticides, control failures of ≤62.9% and enzyme activity variation, with particularly high GST and low AChE levels. Abstract Background Leucoptera coffeella is a key pest of coffee crops in Brazil, causing significant damage by mining coffee leaves.
Daianna P. Costa, Carlos G. da Cruz, Ryan F. S. e Silva, Liliane E. Visôtto, Jesús E. Gomez, Marisol Giraldo‐Jaramillo, Flávio L. Fernandes   +6 more
wiley   +1 more source

Estudo anatômico de cafeeiros enxertados Anatomic study of grafted coffee trees

Ciência e Agrotecnologia, 2009
Neste trabalho, objetivou-se, avaliar as características anatômicas do caule de cafeeiros enxertados, auto-enxertados e pé-franco. Foram utilizadas as cultivares Catucaí Amarelo 2 SL e Topázio MG 1190 (Coffea arabica L.) e o porta-enxerto Apoatã IAC 2258
Fábio Pereira Dias, Daniel Melo de Castro, Antônio Nazareno Guimarães Mendes, Haroldo Silva Vallone, Alex Mendonça de Carvalho, Gladyston Rodrigues Carvalho   +5 more
doaj   +1 more source

Compostos bioativos e atividade antioxidante do café (Coffea arabica L.) Coffee (Coffea arabica L.) bioactive compounds and antioxidant activity

Ciência e Agrotecnologia, 2010
Conduziu-se este trabalho, com a proposta de avaliar o potencial antioxidante de dois padrões da bebida do café (rio e mole), verdes e torrados, utilizando modelos in vitro. Foram determinados o teor de fenólicos totais, ácido clorogênico (ácido 5-cafeoilquínico) e cafeína das bebidas.
Abrahão, Sheila Andrade, Pereira, Rosemary Gualberto Fonseca Alvarenga, Duarte, Stella Maris da Silveira, Lima, Adriene Ribeiro, Alvarenga, Dalila Junqueira, Ferreira, Eric Batista   +5 more
openaire   +2 more sources

AGRICULTURE IN A SOCIALIST CITY: Towards an Alter‐Urban Political Ecology

International Journal of Urban and Regional Research, EarlyView.
Abstract Urban political ecology has developed as a critique of capitalist urbanization. This article develops the concept of alter‐urban political ecology to define urban environments emerging not from capitalist urbanization but from efforts to transform it. Drawing on archival research and ethnographic fieldwork in five urban farms in socialist Cuba,
Gustav Cederlöf
wiley   +1 more source

Características fisiológicas e de crescimento de cafeeiro sombreado com guandu e cultivado a pleno sol Physiological characteristics and growth of coffee plants grown under shade of pigeonpea and unshaded

Pesquisa Agropecuária Brasileira, 2003
O conhecimento dos efeitos do sombreamento sobre a fisiologia de cafeeiros é importante para se determinar níveis ótimos de radiação e temperatura, bem como para subsidiar estudos sobre o crescimento de plantas sombreadas, a fim de determinar a ...
Heverly Morais, Celso Jamil Marur, Paulo Henrique Caramori, Ana Maria de Arruda Ribeiro, José Carlos Gomes   +4 more
doaj   +1 more source

How Different Traditional and Modern Coffee Brewing Methods Affect Its Aroma, Chemistry, Health Effects and Safety Attributes?—A Comprehensive Review to Maximize Coffee Brew Quality

eFood, Volume 7, Issue 2, April 2026.
This review article provides a comprehensive analysis of coffee pre‐brewing techniques, focusing on the methodology and key parameters involved in each coffee brewing process. It also summarizes how different brewing methods affect the coffee metabolome, antioxidant levels, aroma, and physicochemical features.
Enas A. El‐Hawary, Hania A. Guirguis, Nik Muhammad Azhar Nik Daud, Mohd Asraf Zainudin, Ahmed Mediani, Mohamed A. Farag   +5 more
wiley   +1 more source

O dimorfismo dos ramos em Coffea arabica L. [PDF]

Bragantia, 1950
O dimorfismo dos ramos tem sido observado em vários gêneros de plantas, tais como Gossypium, Theobroma, Hedera, Musa, Araucária, Castilla, bem como em Coffea. Tal fenômeno se carateriza por uma diferenciação somática, que, na maioria dos casos, é permanente, podendo-se propagar as diferentes formas pela reprodução vegetativa.
Carvalho, A., Krug, C. A., Mendes, J. E. T.   +2 more
openaire   +3 more sources

Methane Emissions From Flame Curtain Pyrolysis (Kon‐Tiki)

GCB Bioenergy, Volume 18, Issue 4, April 2026.
Flame curtain pyrolysis enables decentralized biochar production, but its net climate benefit depends on the magnitude of methane emissions caused during production. Methane emissions were below 5 g CH4 kg−1 biochar for dry feedstocks but increased for moist feedstocks. Pyrolysis emitted less methane than open burning of wheat straw. ABSTRACT Pyrogenic
Simon Lotz, Nikolas Hagemann, Dirk Hölscher, Hans‐Peter Schmidt   +3 more
wiley   +1 more source