Hans Gheyi

• National Council for Scientific and Technological Development, Brazil

The occurrence of water sources with high concentrations of salts in the semiarid region of Northeast Brazil stands out as a limiting factor in the cultivation of irrigated yellow passion fruit. Thus the search for irrigation strategies with brackish water is fundamental for the sustainability of irrigated crops. The objective of the present study...

Salinity of the soil and irrigation water is one of the main factors limiting the growth of plants. The objective of this study was to assess the biometric, physiological and anatomical responses of passion fruit species Passiflora spp. propagated from cuttings and seeds under various salinity conditions. A completely randomized factorial design wa...

The production of grafted passion fruit is an alternative for plant adaptation to saline environments. The objective of this study was to evaluate the effect of salt stress on physiology, biometry and fruit quality of P. edulis grafted on Passiflora spp. The experiment was conducted in completely randomized design, in a 3 x 2 factorial scheme, corr...

Coconut palm is an important crop explored as a rich source of oil, fiber, milk, and water in most tropical areas. Brazil is the fifth largest producer in the world, and extensive coastal areas of Northeastern Brazil are planted with tall coconut. However, the sustainability of these coconut plantations can be affected by different abiotic stresses...

The objective of this work was to evaluate the effect of water salinity and phosphorus:nitrogen ratios on growth, leaf macronutrients and sodium and the West Indian cherry production. The research was carried out in a protected environment, in lysimeters filled with a Regolithic Neosol of loamy clay texture and low initial phosphorus content. The e...

The objective of this study was to evaluate the gas exchange, chloroplast pigments and growth of ‘BRS Rubi do Cerrado’ passion fruit as a function of irrigation with saline water and potassium fertilization in the seedling formation stage. The experiment was conducted under greenhouse conditions in the municipality of Pombal-PB, Brazil. A randomize...

Searching for plants that are more tolerant to salinity for commercial purposes is necessary for cultivation in soils that are saline and/or irrigated with brackish water. Thus, this study aimed to evaluate the effects of irrigation water salinity on soil salinization, and some physiological and biochemical parameters in noni plants, aiming at a be...

Bovine manure biofertilizers can exert physical, chemical, and biological effects on the soil and the phytoprotective, physiological, and productive actions in horticultural crops. The literature review was performed to compile information on the production, uses, and effects of bovine manure biofertilizers on soil properties and plants. Biofertili...

The exogenous use of hydrogen peroxide is an alternative in the acclimatization of plants to salt stress due to the greater activity of antioxidant enzymes. In this perspective, this study aimed to evaluate the gas exchange and the growth of soursop seedlings under salt stress using hydrogen peroxide. The study was conducted under greenhouse condit...

Fertilization management is one of the technologies studied to reduce nutritional imbalance in plants submitted to saline stress. In this context, we analyzed the effect of the combination of nitrogen and potassium fertilization on the morphology and production of West Indian cherry irrigated with saline waters in the first year of cultivation. The...

The aim of this study was to evaluate the effect of salt stress on the contents of inorganic and organic solutes, pigments and essential oil in two basil genotypes cultivated in hydroponic system. The experiment was carried out in a greenhouse. Treatments were distributed in randomized blocks, in a 2 × 2 factorial arrangement, corresponding to two...

In the semi-arid region of Brazil due to water scarcity, the use of alternative water sources is of vital importance, such as the use of saline waters and treated sewage effluents. Therefore, in the present work, the growth of sunflower plants irrigated with tap water and treated domestic sewage effluent, associated with organic fertilization was e...

Salinity is one of the most important abiotic stresses limiting agricultural production worldwide. Here, we investigated the biometric, physiological and anatomical changes of Passiflora edulis plants propagated from seeds, cuttings and grafts and exposed to salt stress (0.3 - control and 6.3 dS m⁻¹). Based on biometric and physiological results, s...

The semi-arid region of the Brazilian Northeast has adequate edaphoclimatic conditions for the passion fruit production, but the water used for irrigation commonly has high concentrations of salts that are harmful to the plant growth and development. A previous supply of hydrogen peroxide induces the acclimation of plants under saline stress condit...

West Indian cherry is of great socioeconomic importance to Brazil because of its potential to keep local workers in rural areas and generate income. It is mainly cultivated in the Northeast region, where high salt concentrations are common in water. This study was conducted to evaluate gas exchanges and production of West Indian cherry cultivar (cv...

The proper management of irrigation and mineral nutrition is critical to the success of crops, especially crops grown under salt stress conditions. The objective of this study was to evaluate the production and oil content of castor plants (Ricinus communis L.) irrigated with brackish water with different salinity levels (0.6, 1.6, 2.6, 3.6, and 4....

CULTIVO DE MANJERICÃO UTILIZANDO EFLUENTE DOMÉSTICO TRATADO EM SISTEMAS HIDROPÔNICOS SOB DIFERENTES ESPAÇAMENTOS ENTRE PLANTAS LUCYLIA SUZART ALVES1; HANS RAJ GHEYI2; VITAL PEDRO DA SILVA PAZ2; ALEXANDRE NASCIMENTO DOS SANTOS3; MAIRTON GOMES DA SILVA2 E SAMIR DE SOUZA BANDEIRA2 1 Programa de Pós-Graduação em Engenharia Civil e Ambiental, Universida...

Several studies have shown hydrogen peroxide (H2O2) as a metabolic messenger that increases plant tolerance to various stress conditions. However, little is known about its effect on the mobilization of seed reserves in the establishment of seedlings. Thus, this study aimed to evaluate the effect of pretreatment with H2O2 in salt-tolerance and mobi...

The water resources in the semi-arid region of Northeast Brazil commonly have high concentrations of salts, compromising the quality of the water used in irrigation. Thus, it is necessary to study the feasibility of using these resources in agriculture. The present study aimed to evaluate gas exchanges, photosynthetic pigments and growth of white c...

In the Brazilian semi-arid region, the occurrence of water with high salt concentrations is common, making it a limiting factor for the agricultural production. The water-use salinity management strategies are an alternative capable of minimizing the deleterious effects of the stress on plants. This study aimed to evaluate the gas exchanges and pro...

The objective of this study was to evaluate the interaction of nitrogen and phosphorus fertilization and irrigation with saline water on the absolute and relative growth of West Indian cherry plant in vegetative phase. The research was carried out in protected environment, using lysimeters filled with clay loam Regolithic Neosol, with low P content...

The Brazilian Northeast region provides favorable conditions for the exploitation of several crops, but the high salt concentration in irrigation water constitutes a limiting factor for production in most cases. In this context, this study aimed to evaluate the emergence, growth and partition of photoassimilates in soursop seedlings, cv. ‘Morada No...

Water resources in the semi-arid region of Northeast Brazil commonly contain high salt concentrations, compromising the quality of water for agriculture. Thus, adopting techniques that make the use of these resources feasible in agriculture is fundamental. The present study aimed to evaluate the gas exchanges, quantum yield and photosynthetic pigme...

Castor bean is an oilseed crop which is able to adapt to various edaphoclimatic conditions and has considerable contents of oil in its seeds, with potential for use in the castor oil industry. In this context, this study aimed to evaluate changes in membrane damage, water status and gas exchanges in castor bean plants (cv. ‘BRS Energia’) in respons...

The inadequate management of irrigation has promoted the increase in the area of degraded soils through salinization and/or sodification, especially in irrigated perimeters of the northeastern semiarid, promoting environmental impacts and decrease in crop yield. In this manner, studies that aim to evaluate the tolerance of crops to salts, and/or te...

The cultivation of vegetables in semi-arid regions, especially in the context of the use of brackish water, has been made possible by the use of the hydroponics technique. Thus, two experiments were carried out between December 2016 and January 2017 in a protected environment at the Federal Rural University of Pernambuco (UFRPE), Recife – PE, Brazi...

Using nitrogen (N) to increase plant tolerance to salinity has been tested in many species. However, in addition to controversial results, most studies are conducted with annual species and/or in the initial growth stage and there are almost no studies with perennial fruit crops in the production stage. Thus, this study aimed to evaluate the produc...

The aim of this study was to verify the effects of application of H 2 O 2 on salt tolerance and oil production in basil cv. ‘Gennaro de Menta’ grown in a hydroponic system. Seedlings were subjected to 3 levels of H 2 O 2 (0, 1, and 1000 μM) in a nutrient solution during 2 different exposure periods (24 and 48 h) and 2 levels of NaCl (0 and 80 mM)....

The objective was to evaluate the water consumption of sunflower cultivars irrigated with saline waters. The experimental design utilized was in randomized blocks of a 2 x 4 factorial arrangement. This was composed of two levels of electrical conductivity (ECw) of irrigation water (N1 - 0.6 and N2 - 3.0 dS m-1 at 25 ºC) and four cultivars of sunflo...

This research was conducted with the aim of evaluating the water relations, growth and the production components of the sesame cv. CNPA G3, in function of the irrigation with waters of different salinities and fertilization with different proportions of nitrate (N-NO3-) and ammonium (N-NH4+). The study was performed in drainage lysimeters in condit...

The cultivation of irrigated guava in semi-arid areas highlights the need for information regarding its responses to irrigation water quality and the fertilization management that enables its exploitation. Thus, this study aimed to evaluate the effect of water salinity and nitrogen (N) doses on the growth and physiology of the guava cv. ‘Paluma’. T...

Using saline waters in agriculture has become common in many regions worldwide, but some techniques have been developed to enable the use of these waters in order not to harm the crop. Thus, this study aimed to evaluate the growth of soursop seedlings, cv. ‘Morada Nova’, under interaction between salt stress and nitrogen (N) fertilization. The expe...

Salinity is a common problem in arid and semi-arid regions, causing great damage to crop yields, and management strategies that reduce the effects of salt stress on plants are necessary. So, the aim of this study was to evaluate the interaction between salinity, nitrogen and phosphorus on water relations, gas exchange and chloroplastidic pigments o...

The treatment of seeds using growth regulators can overcome seed dormancy and increase the emergence and development of seedlings. The objective of this research was to evaluate the effect of different concentrations of GA4+7 + N-(phenyl methyl)-aminopurine on the dormancy breaking of Passiflora cincinnata Mast. seeds recently harvested and stored...

RESPONSABILIDADE OBJETIVA NA GERAÇÃO DE PASSIVO AMBIENTAL PELA IRRIGAÇÃO (I) JOSÉ ALFREDO DE ALBUQUERQUE1; RAIMUNDO NONATO TÁVORA COSTA2; RENATO SÍLVIO DA FROTA RIBEIRO2 E HANS RAJ GHEYI3 (I)Parte da tese de doutorado do primeiro autor. 1 Departamento Nacional de Obras Contra as Secas - DNOCS. Avenida Duque de Caxias, 1.700. CEP 60.035-111 Fortalez...

Salinity is considered as one of the main abiotic stresses affecting the growth and development of various solanaceous crops such as bell pepper. To reduce the adverse effects induced by saline stress, it is necessary to apply exogenous osmoprotectants such as proline. In this context, this study aimed to evaluate the growth and physical characteri...

This study aimed to evaluate the effects of saline water irrigation and fertilization with different nitrate/ammonium proportions on the contents of nitrogen (N), phosphorus (P), potassium (K⁺) and sodium (Na⁺) and Na⁺/K⁺ ratio in the sesame cv. CNPA G3, through an experiment conducted in drainage lysimeters under greenhouse conditions, in eutrophi...

The traditional methods to evaluate salt tolerance of plants use mainly data of growth and crop productivity. In the case of ornamental plants it is also essential to evaluate the effects on the visual quality of the plants, since the beauty in the acquisition of an ornamental plant is not always associated with its size. So, we tested a new method...

FATORES ABIÓTICOS E A DISTRIBUIÇÃO DE FOTOASSIMILADOS DA MAMONEIRA EM CONDIÇÕES SEMIÁRIDAS1 ALLAN NUNES ALVES2; HANS RAJ GHEYI3; JOSÉ AMILTON SANTOS JÚNIOR4; FREDERICO ANTÔNIO LOUREIRO SOARES5; CLAUDIO AUGUSTO UYEDA6 E JOSÉ EUSTÁQUIO CAMPOS JÚNIOR4 1Artigo extraído da Tese de Doutorado do primeiro autor, presentada ao programa de Pós-Graduação em E...

TROCAS GASOSAS, PIGMENTOS CLOROPLASTÍDICOS E DANO CELULAR NA MAMONEIRA SOB DIFERENTES COMPOSIÇÕES CATIÔNICA DA ÁGUA GEOVANI SOARES LIMA1; HANS RAJ GHEYI2; REGINALDO GOMES NOBRE3; LAURIANE ALMEIDA DOS ANJOS SOARES4; PEDRO DANTAS FERNANDES5 E GUILHERME DE FREITAS FURTADO6 1Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Gran...

This study evaluated the growth and gas exchanges of guava, cv. ‘Paluma’ cultivated in salinized soil and subjected to different nitrogen (N) doses in a protected environment in the municipality of Campina Grande-PB. The experimental design was randomized blocks, in a 5 x 4 factorial arrangement with three replicates, and the treatments resulted fr...

Due to the scarcity of water in the semi-arid region of Northeast Brazil, in both quantitative and qualitative terms, the use of saline water in agriculture should be considered as one alternative for irrigated agriculture. This study therefore aimed to evaluate the photosynthetic pigments, growth and production of West Indian Cherry as a function...

The objective of this research was to study the economical viability of the melon crop irrigated with water of the low and high salt concentration, applied alternately, by stage of development of crop or mixed. The study consisted of two experiments, conducted between November 2008 and November 2009 at the Pedra Preta Farm in Mossoró, RN, Brazil. I...

O maracujazeiro pertence ao gênero Passiflora e a família Passifloraceae. As espécies, P. edulis Sims f. flavicarpa Degener (maracujazeiro amarelo) e P. edulis Sims f. edulis (maracujazeiro roxo) são consideradas as mais importantes economicamente. Apesar da região Nordeste ser considerada como a mais expressiva produtora de maracujazeiro amarelo,...

Resumo O maracujazeiro é produzido na maioria dos estados brasileiros destacando-se como frutífera de expressiva importância socioeconômica. Sendo o Brasil o maior produtor e consumidor mundial dessa fruta. Embora a região nordeste seja considerada como a mais significativa em termos de produção de maracujá, a alta salinidade dos solos e dos mananc...

Noni is a fruit crop well adapted to different soil and climatic conditions. Aiming to evaluate the physiological responses to salinity, noni seedlings were grown in two levels of NaCl (0 and 100 mM) in nutrient solution and the effects of salt stress on gas exchange, chlorophyll a fluorescence, photosynthetic pigments, relative water content and m...

Basil (Ocimum basilicum L.) is a medicinal species of Lamiaceae family, popularly known for its multiple benefits and high levels of volatile compounds. The species is considered to be one of the most essential oil producing plants. Also cultivated in Brazil as a condiment plant in home gardens. The objective of this study was to evaluate the effec...

RESUMO A escassez de água de boa qualidade e a ocorrência de solos com baixa fertilidade são fatores limitantes para a agricultura irrigada, principalmente em regiões áridas e semiáridas, o que induz a utilização de águas salinas e adubação nitrogenada como alternativas para a produção agrícola nessas regiões. Desse modo, objetivou-se avaliar o cre...

The genus Passiflora of the passion fruit crop is the most important from economic point of view. However, its cultivation in the semi-arid region is at risk due to salinity problems, requiring the identification of tolerant species, which develop better in environments with salinity problems. The objective of this study was to evaluate the effects...

Water is a resource for agriculture, urban and industrial activities. It is insufficient in the arid climate areas in the north east of Brazil. Saline water is as an alternative to the expansion of agricultural irrigation areas. Our objective was to assess the effect of irrigation with saline water and nitrogen fertilization on sunflower (Helianthu...

The decrease in the availability of water resources, especially in semi-arid regions, increases every day the need for solutions to supply this deficit water demand. Under low supply of good-quality water, the generation of technologies and research that allow the use of saline waters is currently an essential activity. Hence, this study aimed to e...

p>Os estercos são subprodutos da pecuária por vezes descartados, mesmo sendo potencialmente adubos orgânicos. A água residuária também é considerada outro subproduto de potencial para reuso na agricultura. Objetivou-se avaliar o teor de nitrogênio, fósforo e potássio em plantas de girassol ornamental (Helianthus annuus L ., cv. Sol Noturno) adubada...

The objective of this work was to study the effects of irrigation with saline water associated with phosphate fertilization on the emergence and early growth of cowpea plants. The assay was conducted in the greenhouse of the Department of Environmental Sciences and Technology of the Federal Rural University of the Semi-Arid (UFERSA) in Mossoró-RN,...

The use of saline water in irrigation causes osmotic and toxic effects and nutritional imbalance in plants, leading to morphophysiological modifications in the leaves and compromising the production of photosynthetic pigments, which negatively reflects in the growth and development of the crops. Hence, this study aimed to evaluate the effect of irr...

In the Brazilian semi-arid region, it is common to find water with high concentration of salts and with variation in its cationic nature. Thus, we aimed to evaluate the growth and production components of sunflower, cv. BRS 324, as a function of irrigation water of different salinity levels and cationic nature associated with doses of nitrogen (N)....

In semi-arid regions, the occurrence of water with high concentration of salts is common, which compromises the growth and consequently the production of crops. Thus, this study aimed to evaluate the gas exchanges and production of sesame, cv. CNPA G3, irrigated with saline water and fertilized with different proportions of nitrate and ammonium, in...

p>No semiárido a ocorrência de longos períodos de estiagem vem tornado a irrigação uma pratica indispensável para exploração agrícola. Desta forma objetivou-se, com esta pesquisa, avaliar o crescimento e a produção de do algodoeiro cv. BRS Jady irrigado com águas de distintos níveis de salinidades e doses de matéria orgânica. O experimento foi cond...

It is proposed in this study the evaluation of the growth and yield of ‘All Big’ sweet pepper under foliar application of proline and irrigation with saline water. The research was conducted in pots adapted as drainage lisimeters under greenhouse conditions, using an Eutrophic Entisol with sandy-loam texture in the municipality of Campina Grande, P...

Cowpea is widely grown in the Brazilian semiarid region, however, due to excess salts in the soil and irrigation water constantly low crop productivity has been observed. Accumulation of salts in the soil, growth and biomass partition of cowpea under salt stress and phosphorus fertilization was evaluated in this study. The assay was conducted in a...

PRODUÇÃO E COMPOSIÇÃO MINERAL DO COENTRO EM SISTEMA HIDROPONICO DE BAIXO CUSTO ANTÔNIO RAMOS CAVALCANTE1; JOSÉ AMILTON SANTOS JÚNIOR2; HANS RAJ GHEYI3; NILDO DA SILVA DIAS4 E VITAL PEDRO DA SILVA PAZ3 1Mestrando em Engenharia Agrícola, UFCG. Campina Grande-PB. E-mail: antonio_soledade@hotmail.com; 2Universidade Federal Rural de Pernambuco. Recife-P...

p>Objetivou-se avaliar a concentração de potássio, sódio e a produção na mamoneira cv. BRS Energia, em função da irrigação com águas salinizadas e adubação nitrogenada nas diferentes fases fenológicas, em experimento conduzido em lisímetros de drenagem sob condições de campo no Centro de Ciências e Tecnologias Agroalimentar da Universidade Federal...

p>A produção de algodoeiro de fibra naturalmente colorido, na região semiárida do nordeste brasileiro, onde as águas nem sempre são de boa qualidade, está na dependência do uso de técnicas que viabilizem o manejo do solo e da água com teor elevado de sais. Diante do exposto, objetivou-se avaliar fitomassa e produção do algodoeiro cv. BRS Jady subme...

CRESCIMENTO DE GIRASSÓIS ORNAMENTAIS SOB ESTRESSE SALINO EM HIDROPONIA DE BAIXO CUSTO JOSÉ AMILTON SANTOS JÚNIOR1; HANS RAJ GHEYI2; ANTÔNIO RAMOS CAVALCANTE3; ANNA HOZANA FRANCILINO1 E ALDRIN MARTIN PEREZ-MARIN4 1Programa de Pós-Graduação em Engenharia Agrícola, Universidade Federal Rural de Pernambuco. Recife-PE. E-mail: eng.amiltonjr@hotmail.com;...

Salinity is one of the abiotic stresses that most affect agricultural production, especially in arid and semi-arid regions; however, among species there are large differences in salt tolerance. In this study, the effects of salinity on the growth and accumulation of organic and inorganic solutes were evaluated in 'noni' seedlings at 1, 10, 20, 30 a...

This study aimed to evaluate the growth of passion fruit seedlings under different levels of irrigation water salinity, in an experiment conducted in a protected environment. The treatments were distributed in a completely randomized design, in a 5 x 3 factorial scheme, referring to five levels of irrigation water salinity: 0.3, 1.4, 2.5, 3.6 and 4...

CRESCIMENTO E PRODUCAO DE COENTRO HIDROPONICO SOB DIFERENTES DENSIDADES DE SEMEADURA E DIÂMETROS DOS CANAIS DE CULTIVO MAIRTON GOMES DA SILVA 1 ; TALES MILER SOARES 1 ; HANS RAJ GHEYI 1 ; ITAMAR DE SOUZA OLIVEIRA 2 ; JOSE AILTON DA SILVA FILHO 3 1 Programa de Pos-Graduacao em Engenharia Agricola, Nucleo de Engenharia de Agua e Solo, Universidade Fe...

The physic nut is an important plant for biodiesel production. However, research is still lacking as to the best leaves to be sampled in determining ideal mineral content. It is important that all factors causing variations in the mineral nutrient concentrations in leaves are identified and evaluated to determine the most efficient sampling techniq...

The soils of arid and semiarid regions naturally contain exchangeable sodium that can significantly reduce development and crop yields, being necessary to treat them to make them productive. Several methods can be employed in the reclamation of these soils, like the introduction of tolerant cultivars, such as cotton and the use of organic material,...

Sunflower is a crop with a great potential of utilization in social inclusion projects as part of grain and biodiesel production systems. The use of saline waters for irrigation is a reality because it has increased water availability, crop production and control of environmental risks. The objective of the present study was to evaluate the growth...

The papaya crop has great socio-economic expression in the Brazil and is mainly grown in the northeastern region, which is facing serious problems of water shortage, particularly in its qualitative aspect, due to high concentration of salts in water. For best performance of a crop it is necessary to adopt managements strategies, such as the use of...

This study aimed to assess the effect of salinity of irrigation water and nitrogen fertilization on yield and oil production of sunflower, cv. BRS 324, and yield of maize hybrid AG1051, as well as economic analysis of crop rotation (sunflower/maize). The experimental was laid out in a randomized complete block design in split plot with five replica...

The high salt concentrations found in irrigation formation of water in semi-arid regions lead to changes on crops growth and development and can lead to halomorphicsoils formation. In this context, it was proposed to evaluate the morphophysiology and production of colored herbaceous cotton BRS Topaz fertilized with nitrogen under a saline-sodic soi...

The present study used a hydroponic system with leveled channels, in order to evaluate coriander cultivation under different intervals of nutrient solution recirculation and the use of freshwater and brackish water. The experiment was carried out in a randomized block design with five replicates, in a 2 x 4 factorial scheme, from February to March...

The use of saline water in agriculture has contributed to the expansion of irrigated areas, especially in arid and semiarid regions, where water deficits occur during various months of the year. In this context, this study aimed to evaluate the emergence, growth, and flowering of the castor bean cultivar “BRS Energia” as a function of the cationic...