Physiological quality of scarlet eggplant seeds produced in soil contaminated with industrial residues

José Carlos Lopes,Allan R Freitas,Nathália Aparecida B Fávaris,Luan P Venancio,Amarilson O Candido

doi:10.1590/s0102-053620180111

José Carlos Lopes, Allan R Freitas + Show 3 more

Open Access

https://doi.org/10.1590/s0102-053620180111

Copy DOI

Abstract

ABSTRACT Industrial and organic residues cause environmental impacts at various levels. However, these residues present potential to correct soil acidity and fertility. Considering the possibility of using these alternative sources, the objective of this study was to analyze the quality of scarlet eggplant seeds produced with the use of industrial waste. The experiment was carried out in a greenhouse. We used scarlet eggplant seeds (Solanum gilo), cv. ‘Verde-Claro’, and the soil was Typic Hapludox. The experimental design was randomized blocks, in a factorial distribution (3x4x5), being three soil variations [(pure soil (S), soil + cattle manure (SE) and, soil + sewage sludge (SL)], four corrective treatments [without correction (C1), limestone (C2), steel slag (C3) and marble powder (C4)], and five periods of seed storage (0, 100, 120, 140 and 160 days). The use of steel slag and marble powder associated with the addition of sewage sludge and cattle manure increased fresh mass of plants, at 40%, and dry mass of plants, at 48%, when compared with the pure soil. After 140 day of storage, negatives effects on the vigor of scarlet eggplant seeds could be noticed.

Highlights

Qualidade fisiológica de sementes de jiló produzidas em solo com resíduos industriais Os resíduos industriais e orgânicos causam impactos ambientais em diversos níveis
Several studies on nutritional management of the “motherplant” indicate that many factors may compromise the physiological quality of the seeds as for example the stage of translocation of nutrients to the seeds and the seed storage after its physiological maturation; these factors are considered as mandatory steps in a seed production program (Silva et al, 2015)
All heavy metals in the sewage sludge showed amounts below the maximum limits determined by CONAMA Resolution (2006)

Summary

Introduction

Qualidade fisiológica de sementes de jiló produzidas em solo com resíduos industriais Os resíduos industriais e orgânicos causam impactos ambientais em diversos níveis. O delineamento experimental utilizado foi em blocos casualizados, com distribuição fatorial (3x4x5), sendo três variações de solo [solo puro (S), solo + esterco bovino (SE) e solo + lodo de esgoto (SL)], quatro tratamentos corretivos [sem correção (C1), calcário (C2), escória de siderurgia (C3) e pó de mármore (C4)], e cinco períodos de armazenamento das sementes (0, 100, 120, 140 e 160 dias). Production of quality seeds depends on numerous cares as the place of origin, highlighting soil nutrient availability, since it directly influences on formation of the embryo, the genetics and chemical composition of the species (Carvalho & Nakagawa, 2012). As the seeds of P. angulata, solanaceae, are orthodox, they did not present any reduction in germination and vigor during storage for up to 45 days (Carvalho et al, 2014). Environmental practices aiming to use residues such as steel slag and marble powder, for correcting soil acidity, and sewage sludge, as nutrient source for plants, have been studied in the latest years in order to reduce the impact of their deposition and to reduce production costs (Grotto et al, 2013; Freitas et al, 2015)

Objectives

Methods

Results