Growth, yield and nutrients of sweet cassava fertilized with zinc

• Autor(a) principal: da Silva, Jessica Aparecida [UNESP]
• Data de Publicação: 2023
• Outros Autores: Leonel, Magali [UNESP], Fernandes, Adalton Mazetti [UNESP], de Sousa Garreto, Francisca Gyslane [UNESP], Nunes, Jason Geter da Silva [UNESP], Tajra, Ricardo Figueiredo [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/0103-8478cr20220064; http://hdl.handle.net/11449/248224
• topic: biofortification; fertilization; Manihot esculenta; minerals

The application of zinc fertilizers in the soil has been an agronomic practice to correct Zn deficiency in plants, aiming to increase productivity and/or nutritional quality. This study evaluated how zinc sulfate fertilization affects plant growth, yield performance and nutrient accumulation in the cassava ‘IAC 576-70’. The experimental design was in randomized blocks with eight replications. The treatments consisted of 0, 1.5, 3.0, 4.5 and 6.0 g p1-1 ZnSO4. Results showed improvement in yield with soil fertilization with ZnSO4, with the optimal dose of 2.5 g pl-1. The uptake of nutrients in plant parts is favored with lower doses of zinc fertilizer, with maximum points ranging from 0.8 to 3.2 g pl-1 for macronutrients and 1.6 to 3.6 g pl-1 for micronutrients. The Zn content in tuberous roots increases by more than 40% with fertilization up to 2.8 g pl-1 of fertilizer, which contributes to the nutritional value of roots.