José Olimpio de Souza Júnior

José Olimpio de Souza Júnior
Universidade Estadual de Santa Cruz · Departamento de Ciências Agrárias e Ambientais (DCAA)

About

47
Publications
12,345
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430
Citations
Citations since 2017
23 Research Items
348 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
Introduction
Skills and Expertise
Additional affiliations
April 1998 - present
Universidade Estadual de Santa Cruz
Position
  • Professor

Publications

Publications (47)
Article
Occurrence of more frequent events of prolonged periods of low rainfall (drought) in worldwide cocoa production zones has not only compromised productivity of small cacao farmers, but also crop survival. This study aimed to evaluate how and to what extent cacao trees mortality in dry years is related with variations in soil and physiographic featur...
Article
The establishment of tree seedlings in the field, particularly in acidic soils, is commonly restricted by the excess or low availability of nutrients, or the quality of the root system. This study aimed to evaluate the effects of root deformation and substrate attributes on the growth, biomass allocation, and photosynthesis of G. americana seedling...
Article
The market of citrus fruits for fresh consumption is greatly influenced by the external aspect of the fruit, which needs to meet certain quality requirements. Therefore, this study aimed to evaluate fruit characteristics and leaf concentrations of nutrients, associating them with soil available water, for combinations of ‘Pêra’ orange with five dif...
Article
The aim of this study was to evaluate the variability, partition, and correlation of Fe, Mn, and Zn in the leaves and fruit components (pod husk, pulp, tegument, and cotyledons) of cacao trees. These contents were also correlated with chemical attributes of the soils in regions classified as humid (H), humid to sub-humid (SH), and sub-humid to dry...
Article
Cadmium (Cd) is a trace metal without essential biological function due to its high toxicity to plants, animals and humans, even at low concentrations. On the other hand, Zn is an essential nutrient and plays important metabolic functions in plants. The study of the interaction between essential and a nonessential element may be important for under...
Article
Full-text available
Aim of study: Nickel (Ni) and Copper (Cu) are essential metals for the growth and development of plants. In view of the above, the aim of this work was to quantify and correlate Ni and Cu concentrations in the leaf and the parts of the fruit [pod husk, pulp, tegument (seed coating) and cotyledons] of clonal cacao genotype PH 16. Area of study: Caca...
Article
Full-text available
Cacao (Theobroma cacao) is a very important crop in Southern Bahia, Brazil, which needs good climate and soil conditions and management for great productivity. In this region, cacao is grown on a large number of soil types, and soil properties have great effects on its sustainability and production potentials. The aim of this study was to evaluate...
Article
Full-text available
De maneira geral, a definição da necessidade de calagem (NC) para o Estado da Bahia segue métodos preconizados para outras regiões do país. Para contribuir na definição de um método adequado para o Estado, o trabalho teve o objetivo de conhecer a relação entre o pH e outras características de acidez dos solos da Bahia e validar essa relação por mei...
Article
Full-text available
Foliar fertilization is an interesting strategy for nutrition with micronutrients in perennial plants; among the micronutrients, zinc (Zn) deficiency is the most frequent in cocoa trees (Theobroma cacao L.). The present study aimed to evaluate the efficiency of Zn sources through foliar application for the cocoa crop. The experiment was carried out...
Book
Full-text available
O livro “Cacau: cultivo, pesquisa e inovação”, organizado pelo professor José Olimpio de Souza Júnior e tendo autoria de mais de 50 profissionais, é composto por 17 capítulos abordando diferentes temáticas, como: trajetória de cultivo na Bahia; ecofisiologia e ambiente; indução de resistência ao ataque de patógenos; melhoramento genético; produção...
Article
Full-text available
Em diversas espécies frutíferas, a quantidade de nutrientes exportada pelos frutos vem sendo utilizada como guia para nortear um bom programa de adubação. São raros os trabalhos científicos realizados sobre a absorção dos nutrientes minerais em várias espécies frutíferas, como a graviola. O objetivo desse trabalho foi avaliar a composição mineral d...
Article
Full-text available
A reflectância das folhas pode ser uma alternativa para estimar a teor de nitrogênio (N) na planta, devido à relação entre o teor de clorofila e o de N no tecido foliar. O uso da imagem digital para avaliar o teor de N foliar vem sendo testado para algumas culturas. O objetivo deste trabalho foi avaliar o uso da imagem digital para predizer o statu...
Chapter
Este livro é composto por 17 capítulos que abordam diferentes temáticas como: trajetória de cultivo na Bahia, ecofisiologia e ambiente, indução de resistência ao ataque de patógenos, melhoramento genético, produção de mudas, biologia, física, química e manejo de solos, nutrição e adubação, irrigação, mecanização e sustentabilidade de sistemas agros...
Chapter
Este livro é composto por 17 capítulos que abordam diferentes temáticas como: trajetória de cultivo na Bahia, ecofisiologia e ambiente, indução de resistência ao ataque de patógenos, melhoramento genético, produção de mudas, biologia, física, química e manejo de solos, nutrição e adubação, irrigação, mecanização e sustentabilidade de sistemas agros...
Chapter
Este livro é composto por 17 capítulos que abordam diferentes temáticas como: trajetória de cultivo na Bahia, ecofisiologia e ambiente, indução de resistência ao ataque de patógenos, melhoramento genético, produção de mudas, biologia, física, química e manejo de solos, nutrição e adubação, irrigação, mecanização e sustentabilidade de sistemas agros...
Chapter
Este livro é composto por 17 capítulos que abordam diferentes temáticas como: trajetória de cultivo na Bahia, ecofisiologia e ambiente, indução de resistência ao ataque de patógenos, melhoramento genético, produção de mudas, biologia, física, química e manejo de solos, nutrição e adubação, irrigação, mecanização e sustentabilidade de sistemas agros...
Article
Cadmium (Cd) is a highly toxic metal for plants, even at low concentrations in the soil. The annual production of world cocoa beans is approximately 4 million tons. Most of these fermented and dried beans are used in the manufacture of chocolate. Recent work has shown that the concentration of Cd in these beans has exceeded the critical level (0.6...
Article
Full-text available
With the purpose of assessing the physiological responses of J. curcas young plants to drought and flooding, plants were subjected to three watering regimes: Control, drought and flooding. In the same period, five plants were submitted to drought (irrigation suspension), five to flooding and five were maintained near the field capacity (control). M...
Article
Full-text available
In view of its high economic value, cacao (Theobroma cacao L.) scientists are seeking technological innovations that increases production and improve quality of cacao beans. The objective of this study was to characterize the mineral (N, K, P, Ca, Mg, Si, Fe, Mn, Zn, Cu, Cd, Ba) composition of cacao beans of clone PH-16 grown in different soil type...
Article
Full-text available
O objetivo deste estudo foi avaliar o efeito de misturas de um substrato comercial e pó de fibra de coco (PFC) no crescimento e na qualidade de mudas de Inga laurina (Sw.) Willd. (Fabaceae). Tubetes de polietileno foram preenchidos com quatro misturas do substrato comercial HS Florestal® (HSF) e PFC nas proporções: T1 = 100% HSF; T2 = 80% HSF + 20%...
Article
World demand for cacao and the requirements for quality beans have increased every year. Research studies have developed standards for aspects of cacao quality that meet industrial criteria as well as international import and export legislation that is aimed at food security. This review focused on selected attributes of cacao bean quality. These a...
Article
Full-text available
Levels of Zn in tropical soils profoundly influences growth and nutrition of tree crops. Research was undertaken to assess the effect of soil Zn on growth and nutrition of clonal cacao tree seedlings of PH 16. Three acidic Oxisol soils differing in texture were used with nine doses of Zn (0, 1, 2, 4, 8, 16, 32, 48, and 64 mg dm-3). Rooted clonal se...
Article
Productivity and sustainability of cacao (Theobroma cacaoL.) in tropical soils are affected by levels of iron. Information is lacking on the cacao response to various sources of iron (Fe). A greenhouse experiment was conducted to evaluate the effects of five iron sources iron sulfate heptahydrate, ferric ethylenediamine-N,N’-bis(2-hydroxyphenylacet...
Article
Full-text available
Problemas de baixa qualidade em mudas de cacaueiro, tais como toxidez de ferro e necessidade de calibração do fósforo e baixo enraizamento podem estar associados a fatores que ocorrem independentemente (substratos, vigor da estaca e características do ambiente de enraizamento e crescimento) ou ao seu somatório. Entre esses fatores destaca-se o mane...
Article
Full-text available
Passiflora alata clonal plants were submitted to four shading levels (0, 25, 50 and 75%) at 75 days after cutting establishment (DAC). Ten days later, nitrogen (N) was applied at 0, 25, 50, 100 and 200 mg N kg-1 of soil. A significant interaction (p<0.05) was observed between shading levels (SL) and N concentrations for all photosynthetic parameter...
Article
Full-text available
The replacement of the traditional method for evaluating the nitrogen (N) in the plant by the use of portable chlorophyll meter SPAD is promising because it is a portable device that provides a nondestructive, instant and low cost index.This study aimed to determine the ability of this device in estimating leaf N content of cocoa. The area covered...
Patent
Sodré, G.A. ; Marrocos, P.C.L ; SOUZA JUNIOR, J. O. ; BRENDEL, Martin ; PUNGARTNIK, C. ; VALLE, R. R. ; SANTOS, Regineide Xavier . Extrato da casca do fruto do cacaueiro: obtencao e uso agricola. 2012, Brasil. Patente: Privilégio de Inovação. Número do registro: BR1120120171810, título: "Extrato da casca do fruto do cacaueiro: obtencao e uso agric...
Article
Full-text available
In ecological setting, sodium (Na(+) ) can be beneficial or toxic, depending on plant species and the Na(+) level in the soil. While its effects are more frequently studied at high saline levels, Na(+) has also been shown to be of potential benefit to some species at lower levels of supply, especially in C4 species. Here, clonal plants of the major...
Article
Full-text available
Para avaliar o efeito de substratos e da adubação fosfatada sobre a produção de mudas de cacaueiro, bem como definir doses recomendáveis e nível crítico foliar de P, fez-se um experimento fatorial 5 x 5 + 1: cinco substratos (misturas de fibra de coco (FC) e Plantmax florestal estaca®), cinco doses de P no plantio (de 0 a 800 mg dm-3) e um tratamen...
Article
Full-text available
Nitrogen is the mineral nutrient required most by plants. There are, however, no studies on N fertilization calibration for rooted cocoa tree cutting production on substrate and frequent irrigation. The objective of this study was to compare the efficiency of urea fertilization on substrate and leaves for rooted cocoa tree cutting and to define N r...
Article
Full-text available
Nitrogen is the mineral nutrient required most by plants. There are, however, no studies on N fertilization calibration for rooted cocoa tree cutting production on substrate and frequent irrigation. The objective of this study was to compare the efficiency of urea fertilization on substrate and leaves for rooted cocoa tree cutting and to define N r...
Article
Full-text available
Para a produção de mudas em substratos, é intenso o uso de fertilizante e de irrigação, o que pode gerar perdas elevadas de nutrientes. O P é muito utilizado na preparação de substratos, mas estudos modelando suas perdas ainda são escassos. Este trabalho objetivou avaliar atributos químicos do lixiviado na fase de enraizamento de estacas de cacauei...
Article
Full-text available
Para a produção de mudas em substratos, é intenso o uso de fertilizante e de irrigação, o que pode gerar perdas elevadas de nutrientes. O P é muito utilizado na preparação de substratos, mas estudos modelando suas perdas ainda são escassos. Este trabalho objetivou avaliar atributos químicos do lixiviado na fase de enraizamento de estacas de cacauei...
Chapter
Full-text available
In the tropics, plantation crops are established on newly cleared forest lands with a wide spacing between rows and within rows. For example, cacao (Theobroma cacao) on newly cleared forest lands is being planted with wide spacing of 1.2 × 1.2 m to 5.0 × 5.0 m (Wilson, 1999). Under such a planting pattern, the soil is unprotected during early plant...
Article
Full-text available
The aim of this work was to determine the physical characteristics of substrates of sawdust and to evaluate their effects on the growth of cacao cuttings. The experiment was carried out in random block, 2 x 4 x 2 with factorial design. The treatments were formed from two sawdust residues originated from the districts of Una (SU) and Camacan (SC), B...
Article
Full-text available
The aim of this work was to determine the physical characteristics of substrates of sawdust and to evaluate their effects on the growth of cacao cuttings. The experiment was carried out in random block, 2 x 4 x 2 with factorial design. The treatments were formed from two sawdust residues originated from the districts of Una (SU) and Camacan (SC), B...
Article
Full-text available
Based on the seven year-productivities (1989 to 1995) of 36 cacao-producing areas, on a farm in southern of Bahia, Brazil, the average of the three most and least productive years was obtained corresponding, respectively, to the highest and lowest rain availability. By path analysis, these productivities were related to both the soil morphological-...
Article
Full-text available
Avaliaram-se as produtividades em sete anos (1989 a 1995) de 36 talhões de cacaueiros (Theobroma cacao L.) de uma propriedade no município de Itagibá, Bahia. As médias das três maiores (anos mais chuvosos) e das três menores (anos mais secos) produtividades de cada talhão foram consideradas como variáveis principais na análise de trilha. As variáve...

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