Papers by Stefany Figueiredo
Características do Solo e sua Interação com as Plantas 2, 2019
Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atrib... more Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.
Journal of Agricultural Studies, 2020
Jambu is a vegetable, widely consumed in the Brazilian North Region, both in typical foods and me... more Jambu is a vegetable, widely consumed in the Brazilian North Region, both in typical foods and medicinal herb. Despite its versatility, there are uncountable challenges in relation to its cultivation, especially with regard to the availability of information on nutritional management, such as the lack of data on the effect of liming associated with the supply of nitrogen (N) on the production performance of the crop. Thus, the effect of nitrogen fertilization and liming on growth, production, physiological responses and post-harvest quality of the yellow-flowered variety jambu was evaluated. The experimental design was randomized in factorial blocks (6 x 2), with five repetitions. The treatments consisted in the combination of six doses of N (0; 60; 90; 120; 150 and 180 kg ha-1) with and without liming application (0 and 70% V). The variables of growth, production, gas exchange and post-harvest quality of jambu were evaluated. Standardly, there was interaction between N-dose and lim...
REVISTA AGRO@MBIENTE ON-LINE, 2020
Acmella oleracea is a herbaceous plant native to the Amazon region that is currently arousing ind... more Acmella oleracea is a herbaceous plant native to the Amazon region that is currently arousing industrial interest due to its potential gastronomic, cosmetic and pharmaceutical uses. Accordingly, the objective of the current study was to test the influence of temperatures on A. oleracea seed germination and seedling vigor. A completely randomized design (CRD) with five treatments and five replicates was used. Treatments consisted of temperatures: 23, 26, 29, 32 and 35 ºC. The study was conducted in BODtype climate chambers with relative humidity above 90% and a 12 h photoperiod. Germination, germination speed index (GSI), average germination time, root length and number of normal and abnormal seedlings were recorded. Temperature influenced all analyzed variables, except average germination time and number of normal/abnormal seedlings. A quadratic model best described the relationship between dependent and independent variables. In general, maximum germination values, and GSI and root...
Brazilian Journal of Development, 2019
O jambu é uma hortaliça que vem ganhando bastante destaque nos últimos anos, em escala regional p... more O jambu é uma hortaliça que vem ganhando bastante destaque nos últimos anos, em escala regional pelo impacto que possui na gastronomia paraense, mas também no cenário nacional e internacional, por apresentar um componente ativo conhecido como espilantol, que dá a sensação de um efeito anestésico e formigamento na boca. Apesar disso, estudos descrevendo sintomas de deficiência e exigências nutricionais da espécie ainda não foram completamente elucidados. Sendo assim, o trabalho tem por objetivo avaliar sintomas de deficiências nutricionais e produção de massa seca de plantas de jambu em função da omissão de nitrogênio, fósforo e potássio na solução nutritiva. O experimento foi conduzido em ambiente protegido da Universidade Federal Rural da Amazônia em Belém-PA. O delineamento utilizado foi o inteiramente casualizado, com quatro tratamentos e dez repetições. Os tratamentos foram: solução completa, omissão de nitrogênio (-N), omissão de fósforo (-P) e omissão de potássio (-K). As supressões do N, P e K na solução nutritiva resultaram na ocorrência de desordens nutricionais apenas para o N e K, verificando-se sintomas característicos de deficiência para estes nutrientes, sendo que a deficiência ocorre com os seguintes teores: 17,54 e 3,70 g kg-1, respectivamente. As omissões individuais de N e K provocaram redução da matéria seca da parte aérea e massa seca de raiz. Em adição, observou-se que a omissão de N limitou a passagem da fase vegetativa para a fase reprodutiva, sendo, portanto, o elemento que mais restringiu o crescimento e desenvolvimento do jambu. Palavras-chave: Solução nutritiva. Desordem nutricional. Macronutrientes. ABCTRACT Jambu is a vegetable that has gained a lot of notoriety in the last years, on a regional scale due to the impact it has on paraense gastronomy, but also on the national and international scene, because it has an active component known as spilanthol, which gives the sensation of an anesthetic effect and tingling in the mouth. Despite that, studies describing deficiency symptoms and nutritional requirements of the species have not yet been completely elucidated. Therefore, the objective of this work is evaluate symptoms of nutritional deficiencies and dry mass production of jambu plants in function of nitrogen, phosphorus and potassium omission in nutrient solution. The experiment was conducted in a protected environment of the Federal Rural University of Amazonia in Belém-PA. A completely randomized design with four treatments and ten replications was used. The treatments were: complete solution, nitrogen omission (-N), phosphorus omission (-P) and potassium omission (-K). The suppressions of N, P and K in the nutrient solution resulted in the occurrence of nutritional disorders only for N and K, verifying characteristic deficiency symptoms for these nutrients, being that the deficiency occurs with the following contents: 17.54 and 3.70 g kg-1, respectively. Individual omissions of N and K caused reduction of aerial part dry matter and root dry mass. In addition, it was observed that the omission of N limited the passage from the vegetative phase to the reproductive phase, being therefore the element, most restricted the growth and development of jambu.
Revista Eletrônica Científica Inovação e Tecnologia, Jun 17, 2021
Direito autoral: Este artigo está licenciado sob os termos da Licença creativecommons.org/license... more Direito autoral: Este artigo está licenciado sob os termos da Licença creativecommons.org/licenses/bync/4.0Internacional.
Uploads
Papers by Stefany Figueiredo