Crescimento e diagnose de deficiências nutricionais em <i>Physalis peruviana</i> L.

Abstract

Resumo -O cultivo de Physalis peruviana L., popularmente conhecido como fisális, apresenta grande potencial econômico e está sendo aos poucos incorporado aos plantios do grupo de pequenas frutas no Brasil. Entretanto, ainda há necessidade de se aprimorar o manejo cultural, principalmente em questões relativas às necessidades nutricionais, bem o estabelecimento de parâmetros de diagnose visual de deficiência nutricional. Objetivou-se com este trabalho descrever os sintomas visuais de deficiências nutricionais, bem como avaliar o efeito da omissão de nutrientes no crescimento e nutrição mineral de fisális. O experimento foi conduzido em casa de vegetação do Departamento de Ciências do Solo da Universidade Federal de Lavras, Lavras, Minas Gerais, Brasil. O delineamento experimental utilizado foi o inteiramente casualizado com três repetições e oito tratamentos, em solução nutritiva baseada em solução de Hoagland e Arnon com os seguintes tratamentos: omissões individuais de Ca, Mg, B, Zn, Mn, Fe e múltiplas de CaB e MgMn. Avaliou-se o número médio de folhas por planta (NF); altura (ALT); diâmetro do caule (DC); produção de matéria seca da parte aérea (PMPA), das raízes (PMR) e total (PMT); relação parte aérea/raízes (PA/R); o crescimento relativo da parte aérea e das raízes; bem como a diagnose visual. As deficiências dos nutrientes nas mudas de fisális se traduziram por sintomas típicos, com exceção da omissão do Zn que não manifestou nenhum sintoma de carência. As omissões de Fe e CaB foram as mais limitantes para o crescimento vegetativo dessa espécie.Palavras-chave: Pequenos frutos; Solução nutritiva; Fisális. Nutritional deficiency and growth of Physalis peruviana L.Abstract -The Physalis peruviana L. cultivation, popularly known as 'golden berry', has a great economic potential and is being gradually incorporated into the crops of the small fruits group in Brazil. However, there is still a need to improve management practices, especially in matters relating to the nutritional needs such as the establishment of visual diagnosis parameters of nutritional deficiencies, which would make it possible to achieve higher productivities. This study aimed to describe the visual symptoms of nutritional deficiencies and evaluate the effect of the omission of nutrients on the growth and nutrition of golden berry. The experiments were conducted in a greenhouse of the Department of Soil Science of the Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil. The experimental design was completely randomized with three replications and eight treatments in nutrient solution based on Hoagland and Arnon solution with the following treatments: individual omission of Ca, Mg, B, Zn, Mn, Fe and multiple omissions for CaB and MgMn. This study evaluated the number of leaves; plant height; stem diameter; dry matter weight of aerial parts; dry matter weight of roots; total dry matter weight; dry matter weight aerial:roots ratio; and the visual diagnosis of nutritional deficiencies. The observations of the nutritional deficiencies sho...

Productivity of tomato hybrids due to the application of calcium silicate

“…According to Guerrero et al (2011), silicon accumulates in the epidermis of leaves and may accumulate in other parts of the plant depending on the species. While calcium is one of the essential nutrients to maintain cell wall structure and stabilization (MOSCHINI et al, 2017). Thus, it can be noted that these two nutrients are completely involved in the membrane integrity of the leaves and in the cell wall of the fruit, because the noncommercial productivity of the fruit showed the same performance as the damage of membrane integrity of the leaves, obtaining a reduction of this damage with the Sci.…”

“…The calcium content in the tomato fruit showed significant interaction between the hybrids and doses of calcium silicate ( Figure 4B) and the model that best fitted was linear for 'Ivety' and quadratic for the Natalia hybrid, showing a small increase in the calcium content in the fruit during the increase in calcium silicate doses. According to Moschini et al (2017), Ca deficiency results in low growth of meristematic tissues, which may reflect on the plant in regions of greater cellular expansion such as in tomato fruits. This fact can be observed in this study, when analyzing the non-commercial productivity of the fruits, it COUTINHO, P. W. R. et al 2020Sci.…”

“…The use of silicon in horticulture has been providing important benefits for plants such as resistance against pests and diseases, as well as improving and increasing the post-harvest quality, mainly as a result of the formation of a double layer in the cuticle of the cell wall, which can reduce water loss, decrease the transpiration flow and increase the storage period of vegetables (MARODIN et al, 2014;NETO et al, 2020). Fertilization with silicon also influences the architecture of the plant, increasing the exposure of the leaves to light and thus favoring photosynthesis (SIDDIQUI et al, 2018).…”

“…According to a study on tomatoes by Marodin et al 2014, they found a reduction in the number of noncommercial fruits and increased productivity. Besides being associated with increased antioxidant defense capacity against water deficit (NUNES et al, 2019) and plants under saline stress (RODRIGUES et al, 2018).…”

INQUÉRITO SOROLÓGICO PARA Toxoplasma gondii EM CAPIVARAS (Hydrochoerus hydrochaeris) DE VIDA LIVRE ENCONTRADAS EM ÁREAS URBANAS E RURAIS

“…Porém, a forma de abate e comercialização da carne pode oferecer muitos riscos para a saúde humana principalmente quando se desconhece a origem do animal abatido (LUNDGREN et al, 2009). Toxoplasmose é causada pelo protozoário Toxoplasma gondii, que é um parasita intracelular capaz de causar sérios danos à saúde humana, sua forma principal de transmissão é através de oocistos eliminados por fezes de felinos, que são hospedeiros definitivos, e através do consumo de carne de animais contaminados (COUTINHO;VERGARA, 2015).…”