Italo Cavalcante

• PhD
• Professor at Federal University of São Francisco Valley (UNIVASF)

Neste Obtaining high productivity in guava is achieved, among other factors, by mineral nutrition balanced with foliar nutritional levels in appropriate ranges. Salt stress causes nutritional imbalance that can be accompanied by toxicity, causing damage and yield drop. With the application of products such as biostimulants, the plant can acquire a...

Nutrient export analysis is a reliable parameter to help sour passion fruit producers in the recommendation of fertilization and replacement nutrients to plants. Among the factors that can reduce export of nutrients to the fruits of sour passion fruit, the low-quality genetic material, inadequate supply of nutrients to the plants, and irrigation wi...

The mango tree presents a high level of fruit abscission, which is increased in semiarid regions due to environmental stress. The use of biostimulants and phytoregulators has shown to be a promising strategy to improve fruit setting. Thus, the present study defined the best strategy for setting and development of the fruit, with the application of...

The market demand for grafted mango seedlings is increasing because they provide uniformity and precocity for orchards and gain in productive performance. However, studies on suitable rootstocks for mango seedling production of the main mango cultivars of economic interest in the Sao Francisco Valley, Brazil, are incipient. In this context, the obj...

The imposition of water deficit in mango cultivation, combined with branch maturation, favors the accumulation of essential reserves for flowering. However, simultaneous abiotic stresses such as high temperatures and low humidity, disrupt crucial physiological processes. Alternatives have been sought to mitigate these adverse effects in plants expo...

Calcium (Ca) is a nutrient responsible for maintaining plant quality and fruit yield. The production of new Ca sources, such as micronized (CaM) and complexed Ca (CaC), and their supplementation provide a better yield in mango cultivation. This study aimed to evaluate the efect of Ca sources (micronized and complexed with Ascophyllum nodosum) and a...

Highlights Hydrogel in 128 dm 3 planting hole increases leaf chlorophyll in yellow passion fruit. Water depth reductions do not harm gas exchange in yellow passion fruit. Yellow passion fruit photosynthesis is improved in 128 dm 3 planting hole and polymer. Polymer and 128 dm 3 planting hole increase passion fruit yield with lower water depth. Abst...

The objective of this work was to evaluate the initial adaptive performance of Israeli mango tree cultivars grown in the submedian region of the São Francisco Valley, Brazil. The experiment was carried out from January 2019 to July 2020 using seedlings of the Omer and Shelly cultivars, at six months after transplanting, at a 3×6 m spacing. The expe...

The mango cultivation has shown considerable losses, due to the intense occurrence of physiological disorders in its fruits, and stenospermocarpy is the main disorder under tropical semiarid conditions. So, the experiment was carried out to evaluate the potential loss of yield of mango cv. Palmer by stenospermocarpy, its relation with the nutrition...

The Northeast region of Brazil is the primary producer of yellow passion fruit. In recent years, water scarcity has led passion fruit growers to use highly saline water for cultivation. Therefore, implementing technologies that alleviate the negative effects of salt stress on plants is a promising approach, particularly in semi-arid conditions. Thi...

The use of humic substances (HS) in the soil can increase the efficiency of nitrogen fertilizers and contribute to the increment in soil organic matter and plant nutrient availability. Hence, this study aimed to evaluate, in two production cycles, the effect of applying HS and different nitrogen (N) doses on the chemical attributes and organic matt...

The bacterium Rhodopseudomonas palustris is a microorganism able to fix CO2 and absorb sunlight and, therefore, can increase plant photosynthetic activity and mitigate the effects caused by abiotic stresses. Therefore, this work aimed to evaluate the effect of R. palustris on gas exchange and nitrate reductase activity of mango cv. 'Keitt' grown un...

The management adopted for the mango crop requires that, at a certain stage, the irrigation depth should be reduced to promote a more uniform flowering. In regard to that, it is necessary to introduce new alternatives that mitigate the harmful effects of abiotic stress and that promote greater fruit yield. Therefore, the present study aimed to eval...

The objective of this study was to establish the optimal content and sufficiency range of the nutrients in mango of the cultivars Tommy Atkins, Kent and Keitt in the Sub-middle San Francisco Valley by the Boundary Line and Mathematical Chance methods and compare them to other nutritional diagnosis methods used in Brazil and Australia. The study was...

Irrigation with saline water is one of the main factors that limit gas exchange and yield of yellow passion fruit in the semi-arid region of Brazil. The use of wild species of Passiflora ssp. tolerant to salinity as a rootstock and the application of mulching with plastic film can attenuate the effects of salt stress. The objective of present study...

Grown in different regions of Brazil, mango is of great importance at the national level. However, mango cultivation is directly related to physiological factors such as photosynthesis, stomatal conductance and chlorophyll. Physiological factors are related to the nutritional balance of the plant. Among the nutrients, potassium (K) can be highlight...

Knowing the accumulation of nutrients in mango plants is essential for calibrating fertilization programs aiming to increase yield in nutritionally unbalanced orchards. The work aimed to evaluate mango nutritional efficiency through nutrient accumulation and partitioning in plants of Palmer cultivar grown in sand soils at São Francisco Valley, Nort...

Water stress should be adequately managed during shoot maturation to improve the floral induction of mango grown in semi-arid regions. In this scenario, proline association with algal extracts has a potential stress-mitigating effect. However, even though this practice has been reported separately for some crops, its effects on mango are still unkn...

The accumulation of proline as an answer to abiotic stresses has already been studied extensively. Even the same, the use of this amino acid linked to the use of marine algae (Ascophyllum nodosum) in the mangoes breeding has not been described in scientific literature yet. The objective of this study was to evaluate the effects of proline and algal...

The objective of this study was to evaluate the effectiveness of fulvic acids and free amino acids on paclobutrazol in the flowering of mango ‘Keitt’ cultivated in the semi-arid region. The experiment was performed from 2017 to 2018 simultaneously in two orchards with the same plants and management characteristics, located in Cabrobó, State of Pern...

Apple tree has been experimentally grown Brazilian tropical semiarid. In these new regions, fertilizing management research for N and K is crucial to reach apple high yields. Therefore, an experiment was conducted to evaluate the effect of N and K fertilizing on fruit production, leaf chlorophyll and N and K nutritional status of apple cv. ‘Julieta...

Nitrate reductase is the enzyme that catalyzes the first reduction reaction in the nitrate assimilation process, an important nitrogen (N) source. This element is one of the macronutrients required in greater amounts by mango (Mangifera indica L.), exerting a great influence on the growth and development of the plants. In this context, this work ai...

ABSTRACT The objective of the present study was to evaluate the influence of the application of fenpropimorph and paclobutrazol on gas exchanges and photosynthetic pigments of ‘Tommy Atkins’ mango grown in the semi-arid region in different evaluation periods. Two experiments were carried out in ‘Tommy Atkins’ mango orchards in the first production...

The present study aimed to assess the effectiveness of fulvic acids and free amino acids in potentiating the effect of paclobutrazol on flowering management of mango 'Keitt' grown in tropical semiarid. The experiment was carried out simultaneously in two orchards with the same mango cultivar and management characteristics. The experiment was perfor...

São Francisco River Valley is the main mango Brazilian growing region, where almost 85% of Brazilian exports are produced. In this region, the fructification pruning is the first and one of the most influential cultural treatments of the productive cycle. The objective of this study was to evaluate the effect of mechanical pruning on growth, develo...

There is still a lack of studies on the effect of slow-release fertilizers and substrates on the production of high-quality sugar apple seedlings. In this context, the present study aimed to evaluate the quality and biomass of sugar apple seedlings grown in organic substrates at doses of slow-release fertilizer. The experimental design was randomiz...

The objective of this work was to evaluate the influence of fertirrigation with nitrogen and liquid bovine biofertilizer on gas exchange and leaf chlorophyll index of 'paluma' guava (Psidium guajava L.). The experimental design was randomized blocks with treatments distributed in a factorial arrangement (2 × 4) referring to mineral fertilizing with...

Floral management using the growth regulator paclobutrazol may be an alternative for promoting the uniformity of flowering and fruiting in West Indian cherry (Malpighia emarginata D.C.) plants. However, the effects of its use on fruit quality are still unknown. This study aimed to evaluate the effect of paclobutrazol doses on the fruit quality of M...

This study evaluated the impact of fulvic acid and free amino acids on paclobutrazol soil residue, their absorption and effects on ‘Keitt’ mango grown in tropical semi-arid environmental conditions. The experiment was carried out from 2017 to 2018 simultaneously in two orchards with the same plants and management characteristics, located in Cabrobó...

The shoot maturation phase is important for growing mango tree because it precedes the floral induction, when plants are under stress caused by high temperatures and low water availability, that could be reduced by using plant biostimulant. Thus, the current study aimed to use a plant biostimulant containing yeast extract and amino acids to allevia...

The aim of the present study was to evaluate the effect of biostimulant containing amino acids and yeast extract on the physiological and reproductive characteristics of mango cv. Tommy Atkins during the shoot maturation phase in tropical semi-arid region. The experimental design consisted of randomized blocks with five treatments, five replication...

The association between mineral fertilizer and biofertilizers can contribute to guavas quality. An experiment was carried out in order to assess, over the days, 'Paluma' guavas physical-chemical quality in function of nitrogen fertilizer and biofertilizer doses. It was adopted a randomized blocks with treatments distributed in a factorial 5 x 2 x 5...

Information on humic substances (HS) associated with nitrogen fertilization in West Indian cherry is scarce in the literature. The use of soil conditioners, such as HS, can increase the efficiency in the absorption of nutrients, especially N. Therefore, the present study aimed to evaluate, in two production cycles, the fruit quality, yield and nutr...

Gibberellins have been shown to suppress floral development in mango, thus farmers have used growth retardants, especially paclobutrazol, to inhibit gibberellin biosynthesis, but in many countries such as Brazil, this is the unique registered molecule, which affects sustainability of the mango industry. The objective of this study was to evaluate t...

Soil sampling is a fundamental procedure in the decision making regarding the management of the soil, thus, a sampling plan should represent as accurately as possible the evaluated crop field. Therefore, the objectives of this study were to suggest a soil sampling approach and soil sampling point allocation using spatial analyses and compare to the...

Adequate nutritional status is fundamental for the fruiting process of mango trees (Mangifera indica L.). In this context, plant biostimulants are substances that promote physiological and nutritional changes, benefiting production. The present study evaluated the effect of biostimulants on the nutritional status and fruit production of ‘Kent’ mang...

Mango (Mangifera indica L.) is the second most exported fruit of Brazil, which is especially grown in São Francisco Valley, a semi-arid region. One of the main cultivars exported is ‘Kent’ which has favorable physical-chemical characteristics, but irregular production and low fruit retention on the tree. Thus, the objective of the present study was...

Comunicata Scientiae is a scientific journal created at the Campus "Prof.a Cinobelina Elvas" of the Federal University of Piauí in 2009, which had the first issue published in 2010.Initially, the journal aimed to disseminate the knowledge generated by the scientific community through the publication of research results and new scientific proposals...

The grapevine cultivated in tropical regions, such as the Sub-medium of the São Francisco Valley, exhibits a strong bud dormancy and high apical dominance, thus presenting the need for the utilization of products that promote the dormancy breaking of the buds. The aim of the present work was to evaluate the efficiency of the application of hydrogen...

Guava is an important fruit species but poorly studied for the effect of humic substances and soil mulching on its nutrition and fruit production. Thus, an experiment was conducted to evaluate the nutritional status and fruit production of guava as a function of humic substances and soil mulching in Brazilian semiarid. The experimental design was i...

Correct management of potassium (K) fertilization is of fundamental importance for mango orchards, and K is one of the most exported and yield-limiting nutrients. Thus, an experiment was carried out to evaluate the production and physical-chemical characteristics of Tommy Atkins mango fruits under fertigation with different doses of potassium chlor...

The salinization of irrigated areas in the semi-arid region of Brazil causes major problem for fruit production. Defining the spatial distribution of soil salinity provides important insight technique for improving the management of irrigated fruit-production areas. This work aimed to (1) assess the spatial distribution of soil salinity and (2) del...

Adequate fertilizing management is crucial to reach high mango yields that demand a well-defined fertilizer management, including micronutrient such as boron which management is more difficult due to the narrow range between deficiency and toxicity. This way, an experiment was carried out to evaluate the fruit production and quality of mango cv. Pa...

CRESCIMENTO INICIAL DO MARACUJAZEIRO AMARELO MANEJADO EM DOIS SUBSTRASTOS IRRIGADOS COM ÁGUA SALINA Lourival Ferreira Cavalcante1; Geocleber Gomes de Sousa2; Saulo Cabral Gondim3; Fernando Luiz Figueiredo1; Ítalo Herbert Lucena Cavalcante4; Adriana Araujo Diniz51Departamento de Solos e Engenharia Rural, Centro de Ciências Agrárias, Universidade Fed...

1 RESUMO O presente trabalho teve por objetivo verificar a influência do resíduo de bauxita e lâminas de irrigação na germinação e crescimento inicial de plantas de citros. O delineamento experimental adotado foi inteiramente casualisado em um esquema fatorial 2x6x3, sendo duas espécies de citrus limão cravo (Citrus limonia) e limão volkameriano (C...

SOLUÇÕES NUTRITIVAS NO DESENVOLVIMENTO DO CRISÂNTEMO CULTIVADO EM VASO Márkilla Zunete Beckmann-Cavalcante1,2; Kathia Fernandes Lopes Pivetta2; Ítalo Herbert Lucena Cavalcante1; Lourival Ferreira Cavalcante3; Paulo Affonso Bellingieri41 Engenharia Agronômica, Campus Profa. Cinobelina Elvas, Universidade Federal do Piauí, Bom Jesus, PI, zunete@yahoo...

PRODUÇÃO DO MARACUJAZEIRO-AMARELO IRRIGADO COM ÁGUA SALINA EM COVAS PROTEGIDAS CONTRA PERDAS HÍDRICAS Lourival Ferreira Cavalcante1; José Ronaldo Medeiros Costa2; Fernando Kidelmar Dantas de Oliveira3; Ítalo Herbert Lucena Cavalcante4; Fernanda Aspazia Rodrigues de Araújo21DSER/CCA/Universidade Federal da Paraiba, Areia, PB, lofeca@cca.ufpb.br2CCA/...

Phosphorus is important to plant growth due to its storage and energy transference processes and its involvement in the active absorption of other nutrients. The aim of this study was to evaluate the nutritional status of yellow passion fruit plants under fertilization from different P2O5 sources and rates. Treatments were distributed in randomized...

Yellow passion fruit has economic and social importance in the Brazilian agricultural sector as well as for tropical fruit Agribusiness. Modern agriculture faces a big challenge, as the best quality of products harvested and lower production costs, new cultivation practices being sought, such as the use of organic inputs that are efficient and are...

A produção de mudas com qualidade é fundamental na exploração das culturas agrícolas, e os bioestimulantes apresentam-se como ferramentas benéficas nessa fase da planta. O estudo objetivou avaliar as diferentes concentrações de bioestimulante composto por extrato de algas, no favorecimento da expansão radicular e desenvolvimento vegetativo inicial...

Watermelon has little tolerance to boron deficiency and supply via seed treatment can meet the need of the plant and improve its development especially in the seedling stage. The objective of this study was to evaluate the initial development of watermelon seedlings due to boron application in seeds. The experiment was conducted under greenhouse co...

The seedling production with quality is essential for growing agricultural crops, and the biostimulants are beneficial tools for this plant phase. The study aimed to evaluate the different concentrations of biostimulant containing algae extract on root expansion and initial vegetative development of grape seedlings cv. Crimson Seedless grafted on S...

O objetivo deste trabalho foi avaliar as produtividades e as características agronômicas de 49 cultivares de milho safrinha em cinco municípios do Estado de Goiás. O experimento foi instalado em Latossolo Vermelho-Amarelo Distrófico, nas estações experimentais e em propriedades rurais de seis municípios localizados no sudoeste (Rio Verde, Santa Hel...

Irrigated fruit crops have an important role in the economic and social aspects in the region of the Sub-middle São Francisco River Valley. Thus, the aim of this study was to evaluate soil salinity and the productive aspects of the mango crop, cv. Tommy Atkins, fertigated with doses of potassium chloride (KCl) and potassium sulfate (K2SO4) during t...

Required in small amounts, micronutrients play a key role for adequate plant development, which can be supplied by synthetic or organic fertilizers, such as biofertilizers. Thus, an experiment was conducted between July 2014 and August 2015, in the experimental area of the Federal University of the São Francisco Valley, Petrolina-PE, Brazil, to eva...

The use of organic waste in the composition of substrates for seedlings constitutes an alternative to the recycling of these materials. Thus, an experiment was conducted with the objective to evaluate the production of ‘Formosa’ papaya seedlings in substrate containing carnauba wax residue, under foliar fertilization. The experimental design was co...

Os produtores de mudas de hortaliças estão sempre ávidos por novas tecnologias, especialmente quando se trata do insumo substrato para plantas. Neste sentido, objetivou-se avaliar o desenvolvimento de mudas de melancia cultivar Crimson Sweet, produzidas em diferentes proporções de resíduo de carnaúba para composição de substratos. O experimento foi...

The culture of guava is widely cultivated in tropical regions, where the soil acidity and low nitrogen, phosphorus, and potassium contents are the major limiting factors for crop production. Guava is also cultivated in iron-deficient subtropical regions. Proper cultural management increases fruit production and quality. In this context, the objecti...

The uses of humic substances and organic residues for soil mulching have been more common during last years. This way, an experiment was carried out to evaluate the fruit quality and yield of guava cv. Paluma as a function of humic substances and organic soil mulching in Brazil. The experiment was performed from January 2012 to June 2013 (first tri...

Mineral fertilizer management is one of the most important agronomic techniques applied in papaya cultivation, which generally extracts large amounts of nutrients from soil, especially nitrogen. This study aimed to assess the phytotechnical and physiological attributes and yield of ‘Formosa’ papaya hybrid Caliman 01 as a function of different doses...

Yellow passion fruit, because it is sensitive to the salinity of irrigation water or soil, requires restrictive water management strategies and inputs that mitigate the effects of salts on plants irrigated with harmful saline water levels. As such, an experiment was designed to evaluate the effects of bovine biofertilizer and mineral fertilization...

As a strategy to minimize N losses in the soil, mineral N sources, such as polymer-coated urea, have been studied as possibility to increase the synchronization of N release by the fertilizer and its absorption by plants. Thus, this study aimed to evaluate the contents of macronutrients and the production of Formosa papaya as a function of sources...

This study aimed to evaluate the effect of nitrogen (N) and potassium (K) fertilization in yield and contents of macronutrients in heliconia plants (Heliconia psittacorum x Heliconia spathocircinata Aristeguieta) cv. Golden Torch. The experiment was set in a randomized block design, in a 4 × 4 factorial, corresponding to N doses (0, 120, 180 and 24...

The quality of yellow passion fruits is affected by genetic and exogenous factors like climate, soil and agricultural practices such as fertilizing and irrigation. Thus, an experiment was developed from February to December 2013 to evaluate the effect of nitrogen fertigation and humic substances on physical and chemical quality of yellow passion fr...

RESUMO O Vale do São Francisco constitui o maior produtor nacional de manga em regime irrigado. Na mangueira, além da produtividade, o boro é o nutriente que mais afeta a qualidade dos frutos, e sua deficiência pode provocar distúrbios fisiológicos. Nesse sentido, um experimento foi desenvolvido com o objetivo de avaliar a associação do boro com a...

The fertilizing management for apple tree is essential, especially for nitrogen, one of the most important nutrients affecting fruit yield. Thus, an experiment was conducted in 2012 and 2013 to evaluate the fruit production, yield and leaf chlorophyll of 'Princesa' and 'Eva' apples as a function of nitrogen fertigation under Brazilian semiarid cond...

The production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The exper...

Resumo The melon has little boron deficiency tolerance and supply as seed treatment can meet the need of the plant and improve its development especially in the seedling stage. The objective of this study was to evaluate the initial development of muskmelon seedlings 'Imperial' on the basis of boron application in seeds. The experiment was conduct...

Pawpaw (Carica papaya L.), also known papaya, is a fruit species with economic and social importance for Brazil, the second main world producer. Although this characteristic the relationship between N and K nutrition and papaya fruit quality has been poorly studied. Thus, an objective with this study was to evaluate the effect of nitrogen and potas...

This study evaluated nutrient accumulation of yellow passion fruit seedlings produced in substrates containing proportions of decomposed buriti (Mauritia vinifera Mart.) stem (DBS) and the boron in this process. Four experiments were conducted in Federal University of Piauí in Brazil. The experimental design was completely randomized in factorial s...

The custard apple (Annona squamosa L.), also known as the sugar apple, is a fruit species native to Brazil that has been poorly studied, especially in relation to the effect of humic substances on its fruit quality and yield. An experiment was conducted from December 2010 to November 2011 to evaluate the fruit quality and yield of the custard apple...

The identification of alternative substrates suitable for seedling production is very important, while boron nutrition is also relevant due to plant requirement and its difficult management. Thus, four experiments were developed from October 2012 to April 2013 to evaluate the effect of substrates using decomposed buriti (Mauritia vinifera Mart.) st...

Among the fruit plants cultivated in Brazil, papaya (Carica papaya L.) stands out by having high productivity of fruit quality. The seedling production system of this culture needs a technology that promotes the production of plants with high physiological and sanitary quality. Thus, we aimed to evaluate the growth, dry matter accumulation and the...

The nutritional requirements of papaya (Carica papaya L.) increase continuously throughout the crop cycle, especially for potassium and nitrogen, which are the most required nutrients and act on plant vital functions such as photosynthetic activity, respiration, transpiration and stomatal regulation. An experiment was conducted from November 2010 t...