Saturação por Bases no Crescimento e na Nutrição de Mudas de Ipê-Amarelo

Abstract

RESUMOO ipê-amarelo (Tabebuia serratifolia) é uma espécie florestal com potencial madeireiro, porém, pouco utilizada em plantios florestais, devido à escassez de informações sobre sua produção tanto em viveiro quanto no campo. Diante disso, realizou-se experimento com o objetivo de verificar os efeitos da calagem no crescimento e na nutrição de mudas de T. serratifolia. O calcário foi misturado ao solo Latossolo Vermelho distrófico de textura franco-arenosa, em sacolas plásticas com capacidade para 2,5 kg. Os tratamentos foram dispostos em delineamento inteiramente casualizado, com cinco repetições: testemunha (26,5%); 60%; 70%; 80% e 100% de saturação por bases. Após 120 dias, avaliaram-se: altura, diâmetro de colo, relação altura e diâmetro, biomassa seca e índice de Dickson. As plantas secas foram submetidas às determinações dos teores de macronutrientes. Os melhores resultados para crescimento da T. serratifolia foram verificados no nível de 70%, principalmente porque N, K, Ca e Mg foram disponibilizados em concentrações adequadas, possibilitando o incremento. Palavras-chave:Tabebuia serratifolia, calagem, nutrição de plantas. Base Saturation on Growth and on Nutrition of Yellow Ipê Seedlings ABSTRACTYellow ipê (Tabebuia serratifolia) is a forest species with wood potential, but little used in forest plantations because of the lack of information about their production both in the nursery and in the field. Therefore, an experiment was conducted in order to verify the effects of liming on growth and nutrition of T. serratifolia. The lime was mixed with soil dystrophic Red Oxisol with sand loam texture in plastic bags with capacity of 2.5kg. The treatments were in a completely randomized design with five repetitions: control 26.5%; 60%; 70%; 80% e 100% base saturation. After 120 days, were evaluated: height, stem diameter, height and diameter relation, dry biomass and Dickson quality index. The dried plants were submitted to determination of macronutrients content. The better results for growth of T. serratifolia were observed on the level of 70%, mainly because N, K, Ca and Mg were available in adequate concentrations, allowing the increase.

Effect of substrate formulations on seedlings of Araucaria angustifolia (Bertol.) Kuntz, a critically endangered species from Southern Brazil

“…Base saturation is an important indicator of soil fertility since high levels of V% suggest high concentration of cations, such as Ca² + , Mg² + and K + , and decreased levels of H + and exchangeable Al 3 + (GORSKI et al, 2019), denoting a suitable environment for plant growth. Similarly to the present study, Vieira and Weber (2017) found that base saturation at 70% allowed for better development of Tabebuia serratifolia seedlings in comparison to lower levels. Conversely, for Toona ciliata var.…”

Growth and Quality of Leucochloron incuriale Seedlings Subjected to Liming and Phosphorus

“…The lack of response to liming by the species may have resulted from its ability to adapt to soils such as those found in the Cerrado biome, which presents high acidity level and low nutrient availability. The chemical limitations of the soil mean that the phytophysiognomy of this biome is featured by the presence of tolerant species, although these species face limited growth and development due to nutrient deficiency (Vieira & Weber, 2017). The aforementioned authors assessed the effects of liming on the growth and nutrition of Tabebuia serratifolia seedlings in an experiment using soil with 26.5% base saturation and found better growth in 70% BS.…”

Trichoderma spp. on treatment of Handroanthus serratifolius seeds: effect on seedling germination and development

“…Despite its importance, H. serratifolius is rarely utilized in forest plantations due to the lack of information regarding its development in both nursery and field conditions [16], being propagated mainly by seeds but also demonstrating germination and preservation issues, such as reduced physiological potential during storage [17,18,19].…”