Postharvest quality and coloration of radish roots under organic fertilization in a semi-arid environment

• Published in: Ciência e agrotecnologia 2023-01, Vol.47
• Main Authors: Silva, Jéssica Paloma Pinheiro da, Bezerra Neto, Francisco, Santos, Elizangela Cabral dos, Lima, Jailma Suerda Silva de, Carmo, Iron Dhones de Jesus Silva do, Frutuoso, Rebeca Monique Silva
• Format: Article
• Language: English
• Subjects: AGRICULTURE, MULTIDISCIPLINARY; Calotropis procera; food security; green manuring; post-harvest; Raphanus sativus
• ISSN: 1413-7054; 1981-1829; 1981-1829
• DOI: 10.1590/1413-7054202347004423

ABSTRACT The postharvest quality and coloration of radish roots can be compromised by factors such as the type of cropping system and fertilization management. Therefore, the objective of this work was to estimate the postharvest quality indices and color parameters of radish roots in monocropping, as a function of different roostertree (Calotropis procera) biomass amounts, in two cropping seasons in a semi-arid environment. The experimental design used was randomized complete blocks with five treatments and five replications. The treatments consisted of different roostertree biomass amounts: 16, 29, 42, 55 and 68 t ha-1 on a dry basis, incorporated into the soil. In each block, two additional treatments were added, one without fertilization (control) and the other with mineral fertilizer, for comparison purposes with the maximum efficiency treatment. The radish cultivar planted was Crimson Gigante. The radish characteristics evaluated were: pH, soluble solids content (SS), titratable acidity (TA), SS/TA ratio, total soluble sugar content (TSS), vitamin C (CV) and anthocyanin (A) contents, and roots color parameters (L*, C* and h°). The maximum flavor efficiency (SS/TA) and the total soluble sugar content (TSS) were achieved with the incorporation into the soil of 47.24 and 25.27 t ha-1 roostertree biomass, respectively. Higher concentrations of bioactive compounds (CV and A) were obtained when incorporating 35.79 and 45.85 t ha-1 green manure biomass. The color parameters values (L*, C* and h°) in the red radish roots were achieved in the biomass amounts of 40.39, 53.14 and 52.71 t ha-1 of roostertree. RESUMO A qualidade pós-colheita e a coloração das raízes do rabanete podem ser comprometidas por fatores como o tipo de sistema de cultivo e manejo da adubação. Portanto, o objetivo deste trabalho foi estimar os índices de qualidade pós-colheita e os parâmetros de cor de raízes de rabanete em monocultivo, em função de diferentes quantidades de biomassa de flor-de-seda (Calotropis procera), em duas estações de cultivo em ambiente semiárido. O delineamento experimental utilizado foi blocos ao acaso com cinco tratamentos e cinco repetições. Os tratamentos consistiram de diferentes quantidades de biomassa de flor-de-seda: 16, 29, 42, 55 e 68 t ha-1 em base seca, incorporadas ao solo. Em cada bloco foram adicionados dois tratamentos adicionais, um sem adubação (controle) e outro com adubação mineral, para fins de comparação com o tratamento de máxima eficiência.