Marcelo Almeida de Oliveira Junior

Dr. Marcelo Almeida de Oliveira Junior

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Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 June 2025 in Horticulturae
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Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
Danilo Eduardo RozaneDanilo Eduardo Rozane
Danilo Eduardo Rozane
TCTatiana Cantuarias-Avilés
Tatiana Cantuarias-Avilés
Simone Rodrigues da SilvaSimone Rodrigues da Silva
Simone Rodrigues da Silva
The production of fruit crops plays a vital role in the agricultural sector, contributing significantly to the social and economic development of rural communities. In Brazil, fruit production is diverse due to favorable edaphoclimatic conditions, with avocado (Persea americana Mill.) emerging as an important crop. Its production continues to expand in both cultivated areas and yield, making it a key export to non-producing countries. However, despite its importance, nutritional management information, crucial for achieving high yields, remains limited. Current guidelines on nutrition monitoring are outdated, general, and based on data from other countries with different edaphoclimatic conditions, making them not directly applicable to Brazilian orchards. Furthermore, outdated nutritional information becomes less reliable over time, as climate change alters soil conditions and crop nutrient concentrations and requirements, reinforcing the need for the establishment of up-to-date and specific nutritional information. This study aimed to establish nutritional standards for ‘Hass’ avocado production using the Diagnosis and Recommendation Integrated System (DRIS) and Compositional Nutrient Diagnosis (CND) methodologies, and to define sufficiency ranges (SRs) and Critical Levels (CLs) for both macronutrients (N, P, K, Ca, Mg, and S) and micronutrients (B, Cu, Fe, Mn, and Zn). The analyses were based on yield (t ha−1) and leaf nutrient content data from commercial orchards, with datasets divided into younger (4–9 years) and older (10–26 years) plant groups. The DRIS effectively established nutritional standards for younger plants, explaining 11% of yield variation through nutritional balance. CND, in turn, was effective for both groups, accounting for 14% of yield variation and outperforming DRIS in associating nutritional status with productivity. SRs and CLs for ‘Hass’ avocado production were defined using both DRIS and CND. Together, these indices and diagnostic parameters offer valuable tools for enhancing nutritional monitoring and fertilization strategies in Brazil. Notably, SRs and CLs varied according to plant age.

22 May 2025 in Applied Fruit Science
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LMLígia Broglio Micheletti
Lígia Broglio Micheletti
TCTatiana Cantuarias-Avilés
Tatiana Cantuarias-Avilés
Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
EBEdypol Guilherme Baptista
Edypol Guilherme Baptista
GNGuilherme Nacata
Guilherme Nacata
Simone Rodrigues da SilvaSimone Rodrigues da Silva
Simone Rodrigues da Silva

2 October 2021 in Research, Society and Development
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Journal Article
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Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
MDMatheus Luís Docema
Matheus Luís Docema
MSMarcela Sant'Anna Cordeiro da Silva
Marcela Sant'Anna Cordeiro da Silva
MSMichael Willian Rocha De Souza
Michael Willian Rocha De Souza
Terceiro maior país em produção de frutas frescas no mundo, o Brasil destaca-se por apresentar ampla capacidade de adaptação produtiva de fruteiras exóticas devido, principalmente, às suas condições edafoclimáticas que somados a práticas culturais já estabelecidas, permitem alcançar altas produções. Além disso, o país é detentor de uma das maiores agrobiodiversidades mundiais, possuindo espécies nativas frutíferas com alto potencial de exploração do consumo. Porém, muitas vezes essas frutas não recebem o devido valor, sendo negligenciadas pelo desconhecimento popular, e, consequentemente, apresentam baixa participação no comércio de frutas do Brasil. Diante deste cenário, o presente trabalho teve por objetivo identificar o padrão de consumo de frutas, analisar o conhecimento popular sobre fruteiras exóticas e nativas e verificar a potencialidade de inserção de espécies nativas do Brasil no mercado de frutas. Observou-se que, o consumo de frutas é inferior ao recomendado pela Organização Mundial da Saúde (OMS), sendo composto em sua maioria de fruteiras exóticas adquiridas em supermercados. Apesar da falta de entendimento dos termos de classificação de frutas quanto ao centro de origem, os participantes da pesquisa, compreendidos majoritariamente por pessoas que possuem ensino superior, conhecem quais espécies são pertencentes à flora brasileira e quais foram introduzidas no território nacional. Além disso os entrevistados demonstram consciência da importância das espécies nativas e dos entraves que impedem a inserção no mercado em maiores quantidades, afirmando que gostariam de consumir mais frutas nativas, o que demonstra a potencialidade da fruticultura nacional.

17 April 2019 in Comunicata Scientiae
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JSJackson Mirellys Azevedo Souza
Jackson Mirellys Azevedo Souza
SLSarita Leonel
Sarita Leonel
MSMarcelo De Souza Silva
Marcelo De Souza Silva
Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
RMRafaelly Calsavara Martins
Rafaelly Calsavara Martins
EAElma Machado Ataíde
Elma Machado Ataíde
Choosing the best season collection of cuttings is essential to have success with propagation, due mainly to carbohydrate content, since is a source of energy for roots and shoots development. In literature, there are no papers that associate the collection season of cuttings with carbohydrate contents in figs. Therefore, the current study aimed to evaluate carbohydrate contents and season collection of cuttings to propagate ‘Roxo de Valinhos’ fig tree. The experiment was conducted in a greenhouse; cuttings were collected in the first week of the following months: June, July, August and September. The design was in completely randomized blocks, with four replicates of 30 cuttings collected per season. The following traits were evaluated: carbohydrate content; percentage of root cuttings, bud cuttings, cuttings without bud and root; number of buds, leaves and roots per cutting; length of the largest root and bud; bud diameter; bud and root dry mass; and root volume. Results indicated high carbohydrate content in cuttings that were collected in August; therefore, the best month to collect cuttings of ‘Roxo de Valinhos’ fig tree in the city of São Manuel, state of São Paulo. This result is due to high percentage of rooted cuttings and better development. Furthermore, carbohydrate content mainly affects root growth; besides that, reducing sugars are the most important feature in the development of cuttings.

15 April 2024 in Plant Cell, Tissue and Organ Culture (PCTOC)
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Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
BCBruna Do Amaral Brogio Colli
Bruna Do Amaral Brogio Colli
LSLiliane Cristina Libório Stipp
Liliane Cristina Libório Stipp
RLRodrigo Rocha Latado
Rodrigo Rocha Latado
SPSônia Maria De Stefano Piedade
Sônia Maria De Stefano Piedade
Francisco de Assis Alves Mourão FilhoFrancisco de Assis Alves Mourão Filho
Francisco de Assis Alves Mourão Filho

4 September 2022 in Comunicata Scientiae
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Journal Article
Open access
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MSMarcela Sant'Anna Cordeiro da Silva
Marcela Sant'Anna Cordeiro da Silva
Sarita LeonelSarita Leonel
Sarita Leonel
AFAntonio Flávio Arruda Ferreira
Antonio Flávio Arruda Ferreira
JSJackson Mirellys Azevedo Souza
Jackson Mirellys Azevedo Souza
Marcelo Almeida de Oliveira JuniorMarcelo Almeida de Oliveira Junior
Marcelo Almeida de Oliveira Junior
MSMarcelo de Souza Silva
Marcelo de Souza Silva
Now days there has been an increase in the consumers demand for great food, produced in environmentally cost-effective and friendly processes, being increasingly necessary new cultivation techniques able to ensure the required standards for banana growers and consumers. Therefore, the research aimed to evaluate the effects of bunch cover materials on development and quality of ‘BRS Platina’ banana fruits. The experimental design was in randomized blocks, with six treatments, four replications and four plants per plot, being the treatments: WB – without bagging; BBTK – black polypropylene bag (TNT) + kraft paper; BBPK - black polyethilene bag + kraft paper; KP – kraft paper; WBT – non-woven polypropylene white bag (TNT) and WBP - white polyethylene plastic bag. The ‘BRS Platina’ banana bunches cover improved fruits quality and the treatment polyethylene white bag (WBP) can be an advantageous option for the banana growers because of its effectiveness on the reduction of damages caused by flowers thrips (Frankliniella spp), providing a good agronomic performance and also does not delay the harvesting.