AVALIAÇÃO DE BICOS DE PULVERIZAÇÃO DE AGROTÓXICOS NA CULTURA DO ALGODÃO

Avaliou-se a eficiência de três tipos de bico de pulverizador na aplicação de agrotóxicos em algodão, mediante experimento de campo na estação da Dow AgroSciences. Analisou-se o comportamento dos bicos (TXVK-8, TXVK-4 e TJ-60 8002) com relação à deposição, tamanho e densidade das gotas nas três partes da planta (apical, mediana e basal). Não foi verificada diferença estatística entre os mesmos com relação à deposição. Entretanto, a deposição média dos três bicos foi significativamente decrescente da região apical (45%) para mediana (18%) e desta para a basal (7%). O bico TJ-60 8002 VS produziu gotas relativamente grandes, resultando em baixa densidade de deposição e, portanto, não seria recomendado para controlar pragas que apresentem baixa mobilidade sobre as plantas. EVALUATION OF PESTICIDE PULVERIZATION NOZZLES ON COTTON CULTURE Abstract The efficiency of three pulverization nozzles in the application of pesticides on cotton were evaluated through a field experiment at Dow AgroSciences Experiment Station. The behavior of the nozzles (TXVK-8, TXVK-4, and TJ-60 8002) were tested in relation to deposition, drop size and density in three parts of the plant (apical, middle, basal). There were no statistical differences among them in relation to deposition. However, the medium deposition of the three nozzles was significantly decreasing from the apical region (45%) to the middle region (18%) and from this to the basal region (7%). The TJ- 60 8002 VS nozzle produced relatively big droplets, resulting in a low density deposition, and therefore, it would not be recommended for the control of pests that show low mobility over the plants

Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others

AVALIAÇÃO DE BICOS DE PULVERIZAÇÃO DE AGROTÓXICOS NA CULTURA DO ALGODÃO

Avaliou-se a eficiência de três tipos de bico de pulverizador na aplicação de agrotóxicos em algodão, mediante experimento de campo na estação da Dow AgroSciences. Analisou-se o comportamento dos bicos (TXVK-8, TXVK-4 e TJ-60 8002) com relação à deposição, tamanho e densidade das gotas nas três partes da planta (apical, mediana e basal). Não foi verificada diferença estatística entre os mesmos com relação à deposição. Entretanto, a deposição média dos três bicos foi significativamente decrescente da região apical (45%) para mediana (18%) e desta para a basal (7%). O bico TJ-60 8002 VS produziu gotas relativamente grandes, resultando em baixa densidade de deposição e, portanto, não seria recomendado para controlar pragas que apresentem baixa mobilidade sobre as plantas. EVALUATION OF PESTICIDE PULVERIZATION NOZZLES ON COTTON CULTURE Abstract The efficiency of three pulverization nozzles in the application of pesticides on cotton were evaluated through a field experiment at Dow AgroSciences Experiment Station. The behavior of the nozzles (TXVK-8, TXVK-4, and TJ-60 8002) were tested in relation to deposition, drop size and density in three parts of the plant (apical, middle, basal). There were no statistical differences among them in relation to deposition. However, the medium deposition of the three nozzles was significantly decreasing from the apical region (45%) to the middle region (18%) and from this to the basal region (7%). The TJ- 60 8002 VS nozzle produced relatively big droplets, resulting in a low density deposition, and therefore, it would not be recommended for the control of pests that show low mobility over the plants

Isolation of 8 ß -hydroxy-goyazensanolide from Eremanthus argenteus and the complete and unequivocal 1H and 13C NMR data assignment for this sesquiterpene lactone

This work describes the first isolation of 8 ß-hydroxy-goyazensanolide from Eremanthus argenteus and the complete and unequivocal 1H and 13C NMR assignments for this compound. The assignments were carried out in the means of spectroscopic data from 1H NMR, 13C{1H} NMR, gCOSY, gHMQC, gHMBC and J-resolved experiments. All hydrogen homonuclear coupling constants were measured, and all hydrogen signals multiplicities were clarified. This is the first report of 13C NMR data for this sesquiterpene lactone to our knowledge

Comprehensive Study of the IBMP ELISA IgA/IgM/IgG COVID-19 Kit for SARS-CoV-2 Antibody Detection

COVID-19 laboratory diagnosis primarily relies on molecular tests, highly sensitive during early infection stages with high viral loads. As the disease progresses, sensitivity decreases, requiring antibody detection. Since the beginning of the pandemic, serological tests have been developed and made available in Brazil, but their diagnostic performance varies. This study evaluated the IBMP ELISA IgA/IgM/IgG COVID-19 kit performance in detecting SARS-CoV-2 antibodies. A total of 90 samples, including 64 from COVID-19 patients and 26 pre-pandemic donors, were assessed based on time post symptom onset (0–7, 8–14, and 15–21 days). The kit showed 61% sensitivity, 100% specificity, and 72% accuracy overall. Sensitivity varied with time, being 25%, 57%, and 96% for 0–7, 8–14, and 15–21 days, respectively. Similar variations were noted in other commercial tests. The Gold ELISA COVID-19 (IgG/IgM) had sensitivities of 31%, 71%, and 100%, while the Anti-SARS-CoV-2 NCP ELISA (IgG) and Anti-SARS-CoV-2 NCP ELISA (IgM) showed varying sensitivities. The IBMP ELISA kit displayed high diagnostic capability, especially as the disease progressed, complementing COVID-19 diagnosis. Reproducibility assessment revealed minimal systematic and analytical errors. In conclusion, the IBMP ELISA IgA/IgM/IgG COVID-19 kit is a robust tool for detecting anti-SARS-CoV-2 antibodies, increasing in efficacy over the disease course, and minimizing false negatives in RT-PCR COVID-19 diagnosis