Diagnose nutricional e qualidade de mudas de <em>Psidium cattleianum</em> var. <em>cattleianum</em> Sabine em diferentes substratos

Abstract

<jats:p>The objective of the research was to evaluate the effect of different substrates with sewage sludge on nutrients concentration in biomass of Psidium cattleianum var. cattleianum Sabine seedlings. The treatments are different substrate compositions containing sewage sludge. After 180 days of seeding, biometric characteristics were measured: aerial part height, root system length, stem base diameter, number of leaves, fresh and dry aerial biomass, root and total biomass. Dickson's Quality Index was calculated and nutrients concentration was determined in root system, stem and leaves. It was observed that macronutrients accumulation in root followed the order: N Ca Mg P K S; in stem: Ca N K Mg P S and in leaves: N Ca K Mg P S, were sulfur was less concentrated in three vegetative structures. Micronutrients accumulation in root followed the order: Fe Zn Mn Cu B Mo, and in stem and leaves: Fe Zn B Mn Cu Mo. It is noted that in three vegetative structures, iron and zinc were more concentrated, and molybdenum less concentrated. Sewage sludge use as a substrate proved to be effective in viable seedlings production for planting in field.</jats:p>

Proportions of sewage sludge in the production and quality of Malpighia emarginata DC. seedlings

“…In the production of P. cattleianum Sabine var. cattleianum seedlings, with the same SS content was found similar results for the content of N and S in the aerial part and root (Gonçalves et al, 2020). Similar to our study, S content was the lowest with other forest species using SS as substrate (Camargo et al, 2013;Santos et al, 2019;Melo et al, 2021).…”

“…Treatments T3 and T4 have higher values of S in the aerial part and K and S in root system. There was also an oscillation of K and S in the aerial part of the plant, whereas they decreased in the root in the study of Gonçalves et al (2020). Santos and Lima (2020) conclude that the content of N, P, K, and Ca in leaf structures is significant in seedlings grown in substrates with organic derivatives.…”

“…The availability of nutrients in the substrate influences the growth of lateral roots (Trazzi et al, 2013;Neimog et al, 2022). Additionally, in other analyzes of treatments formulated with SS, lateral roots are more likely to occur when the SS content is higher (Santos et al, 2019;Gonçalves et al, 2020).…”

“…Fruit species native to Neotropical America, such as Eugenia uniflora L. and Psidium cattleianum Sabine var. cattleianum (both Myrtaceae), have demonstrated successful production of high-quality seedlings using SS as substrate (Santos et al, 2019;Gonçalves et al, 2020). Considering the increasing production of this waste due to high population concentration and urbanization implies an increase in the volume of its disposal in landfills (Muter et al, 2022;Silva et al, 2023).…”

“…SS is a variable chemical composition, which can be affected by the composting process and the waste used (Caldeira et al, 2014). Many researchers have tested SS with a variety of native, exotic, and also fruit tree species, in general, the SS has demonstrated results excellent (Faustino et al, 2005;Caldeira et al, 2012Caldeira et al, , 2014Faria et al, 2013;Marques et al, 2018;Santos et al, 2019;Gonçalves et al, 2020;Melo et al, 2021;Silva et al, 2023).…”