Evapotranspiration, crop coefficient and water use efficiency of onion cultivated under different irrigation depths

ABSTRACT This study aimed to determine crop evapotranspiration through the soil water balance, the crop coefficient and water use efficiency of the onion (Allium cepa L.) in a system with four irrigation regimes, cultivated in the semiarid region of northeastern Brazil. Two field experiments were carried out during the rainy and dry periods of the region in 2018, using the treatments of 100% (T1), 75% (T2), 50% (T3) and 25% (T4) of the reference evapotranspiration for daily water replacement and five replicates for each treatment. It was verified that crop evapotranspiration varies according to the water availability in the soil; however, the highest water use efficiency occurred for the T3 treatment. The T1 treatment obtained the highest estimated yield, 43.86 tons ha-1, while T4 obtained 13.47 tons ha-1, the lowest estimated yield among the treatments, and this difference was statistically significant (p ≤ 0.05) by F test. The crop coefficients obtained were 0.68, 0.89, 0.99 and 0.73 for the initial, vegetative, bulbing and maturation stages, respectively.

Microbiological characteristics of bloodstream infections in a reference hospital in northeastern Brazil

Routine blood culture is used for the detection of bloodstream infections by aerobic and anaerobic bacteria and by common pathogenic yeasts. A retrospective study was conducted in a public hospital in Maceió-AL, by collecting data of all medical records with positive blood cultures. Out of the 2,107 blood cultures performed, 17% were positive with Staphylococcus coagulase negative (51.14%), followed by Staphylococcus aureus (11.21%) and Klebsiella pneumoniae (6.32%). Gram-positive bacteria predominated among positive blood cultures, highlighting the group of Staphylococcus coagulase-negative. While Gram-negative bacteria had a higher number of species among positive blood cultures.

First report of Dipetalonema gracile in a captive Marcgrave’s capuchin monkey (Sapajus flavius) in northeastern Brazil: Scientific communication

Parasitic infections are important concern to the Wildlife Conservation Biology, particularly in endangered species. Herein, we report a parasitism by Dipetalonema gracile Rudolphi, 1809 (Spirurida, Filarioidea, Onchocercidae), in the peritoneal cavity of a captive Marcgrave’s capuchin monkey (Sapajus flavius) that died at the Wild Animal Screening Center (CETAS) of the Brazilian Institute for the Environment and Renewable Natural Resources (IBAMA) in the municipality of Cabedelo, state of Paraíba, northeastern Brazil. The necropsy revealed two filarial worms D. gracile in the abdominal cavity. Exudates, thin fibrin layers and fibrous adhesions were also present in the mesentery and spleen capsule. The mesenteric, mandibular, and tracheobronchial lymph nodes were enlarged. Multiple small nodules were seen in the spleen parenchyma. Microscopic examination of the lymph nodes and spleen revealed markedly and diffuse inflammatory reaction, with edema, plasma cells, eosinophils, histiocytes, lymphocytes and rare multinuclear giant cells, with obliteration of the normal histological architecture of the organ. This is the first report of D. gracile parasitism in Marcgrave’s capuchin monkeys, a critically endangered species. Studies of this nature significantly contribute to the knowledge of the parasitic fauna of endangered species, in addition to helping to formulate conservation strategies (in situ and ex situ) and records of new hosts and new areas of occurrence of parasites.

Growth and gas exchange of soursop under salt stress and hydrogen peroxide application

ABSTRACT The cultivation of irrigated soursop in semiarid Northeastern Brazil highlights the need for information regarding its responses to the salinity of irrigation water and the use of techniques that allow its exploration, such as the use of hydrogen peroxide. Thus, the study aimed to evaluate the effect of soaking of seeds and foliar application of hydrogen peroxide on soursop plant growth and physiology under conditions of salt stress. The study was conducted in lysimeters in a greenhouse, and the treatments were distributed in a randomized block design and 4 × 4 factorial scheme, with four values of electrical conductivity of the irrigation water - ECw (0.7, 1.7, 2.7, and 3.7 dS m-1) and four concentrations of H2O2 (0, 25, 50, and 75 μM), with three replicates and one plant per plot. H2O2 concentrations were applied via seed imbibition and foliar spray. Irrigation with water from 0.7 dS m-1 impairs gas exchange and absolute growth rates of plant height and stem diameter and relative growth rate in height of soursop plants. Concentrations of 35, 33 and 23 µM of hydrogen peroxide favored the relative and absolute growth rates of plant height and transpiration, respectively. Compared to the aerial part, the root of soursop plants is more affected when irrigated with water from 1.6 dS m-1.

Prevalence of Musculoskeletal Disorders and Self-Reported Pain in Artisanal Fishermen from a Traditional Community in Todos-os-Santos Bay, Bahia, Brazil

Musculoskeletal disorders (MSDs) can be characterized from their occupational etiology and their occurrence; their chronicity generates negative repercussions for the health of workers, especially of artisanal fishing. To investigate the prevalence of generalized musculoskeletal disorders by body region and self-reported pain in a fishing population of northeastern Brazil, an epidemiological cross-sectional study was carried out in Santiago do Iguape, Bahia-Brazil, in 2017. The Brazilian version of the Nordic Musculoskeletal Questionnaire (NMQ), in addition to a questionnaire containing the socio-demographic and labor conditions were applied to a random stratified sample of 248 artisanal fisheries. There were 170 female shellfish gatherers and 78 fishermen, with a mean age of 36.7 years (SD = 10.5 years) and 43.3 years (SD = 11.8 years), respectively. The beginning of the labor activity was initiated at approximately 11 years of age. The average weekly income varied from 17.64 USD to 29.10 USD. The prevalence of MSD independent of occupation occurred in at least one body region in 93.5% and the presence of musculoskeletal pain/discomfort over the last seven days in 95.2% of the fishing workers. The highest prevalence of MSD was found in shellfish gatherers in: lower back (86.4%), wrist and hand (73.5%), and upper back (66.8%). In relation to the presence of pain in the last year, the frequency of pain was greater in the fishermen compared to the shellfish gatherers. The generalized severity of the MSD in 93.5% of this community of fishermen is evident, with emphasis in the following regions: lower back, wrist and hand and upper back in both groups, with occurrence of pain in more than one body region at the same time.

CRESCIMENTO VEGETATIVO DA MORINGA EM DISTINTOS REGIMES DE IRRIGAÇÃO ASSOCIADOS A COMPOSIÇÕES DE DIFERENTES SUBSTRATOS

CRESCIMENTO VEGETATIVO DA MORINGA EM DISTINTOS REGIMES DE IRRIGAÇÃO ASSOCIADOS A COMPOSIÇÕES DE DIFERENTES SUBSTRATOS VALDIR MOURA DE OLIVEIRA JUNIOR1; THAYS SOUSA LOPES1; JOÃO VALDENOR PEREIRA FILHO1; JAILDO RIBEIRO BARBOSA1; ROBERT WILLIAM FERREIRA SOARES1; CARMEM CRISTINA MARECO DE SOUSA PEREIRA2 1Centro Integrado de Ensino Superior, Universidade Estadual do Piauí (UESPI), Rua Almir Benvindo, s/n, bairro Aeroporto, 64860-000, Uruçuí, Piauí, Brasil. [email protected]; [email protected]; [email protected]; [email protected]; [email protected] 2 Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife, Pernambuco, Brasil. [email protected] 1 RESUMO A moringa possui ampla adaptabilidade e se condiciona, com muita facilidade, ao clima e solo do Nordeste brasileiro. Ainda são escassas as informações sobre a produção de mudas desta espécie sob composições de substratos associados a regimes de irrigação. Desta forma, o objetivo desse trabalho foi caracterizar o comportamento vegetativo de plantas de moringa submetidas a distintas composições de substratos e regimes de irrigação. O experimento foi realizado em ambiente telado, no período de setembro a outubro de 2020, na área experimental da Universidade Estadual do Piauí, Uruçuí. Adotou-se um delineamento experimental em esquema fatorial, sendo, o primeiro fator, dois regimes de irrigação (50 e 100% da ETo) e o segundo fator, cinco substratos (SB1 = latossolo vermelho; SB2 = substrato comercial; SB3 = solo + esterco; SB4 = solo + cinza vegetal; SB5 = solo + borra de café), com 5 repetições. Aos 45 dias após a semeadura (DAS) foram avaliadas a altura de plantas e o diâmetro do caule. Os parâmetros de crescimento inicial da cultura da moringa foram afetados significativamente pela interação (regimes de irrigação x substratos), sendo os melhores resultados obtidos, na maioria dos substratos utilizados, com a aplicação do regime hídrico de 100% da ETo. Palavras-chave: Moringa oleifera Lam, produção de mudas, déficit hídrico. OLIVEIRA JUNIOR, V. M.; LOPES, T. S.; PEREIRA FILHO, J. V.; BARBOSA, J. R.; SOARES, R. W. F.; PEREIRA, C. C. M. S. VEGETATION GROWTH OF MORINGA IN DIFFERENT IRRIGATION REGIMES ASSOCIATED WITH COMPOSITIONS OF DIFFERENT SUBSTRATES 2 ABSTRACT Moringa has wide adaptability and is very easily conditioned to the climate and soil of northeastern Brazil. Information on the production of seedlings of this species under compositions of substrates associated with irrigation regimes is still scarce. Thus, this work aimed to characterize the vegetative behavior of moringa plants submitted to different compositions of substrates and irrigation regimes. The experiment was carried out in a screened environment, from September to October 2020, in the experimental area of ​​the State University of Piauí, Uruçuí. An experimental design was adopted in a factorial scheme, the first factor being two irrigation regimes (50 and 100% of ETo) and the second factor, five substrates (SB1 = red oxisol; SB2 = commercial substrate; SB3 = soil + manure; SB4 = soil + vegetable ash; SB5 = soil + coffee grounds), with 5 repetitions. At 45 days after sowing (DAS), plant height and stem diameter was evaluated. The initial growth parameters of the moringa crop were significantly affected by the interaction (irrigation regimes x substrates), with the best results obtained, in most of the substrates used, with the application of the water regime of 100% of ETo. Keywords: Moringa oleifera Lam, seedling production, water deficit.