Can nitrogen reduction be used to increase seed potato minituber production in an aeroponic system?

Autor(es)

Calori, Alex H. ^[1] ; Factor, Thiago L. ^[2] ; Feltran, Jose C. ^[1] ; de Araujo, Humberto S. ^[3] ; Purquerio, V, Luis F.

Afiliação do(s) autor(es)

^[1] V, Inst Agron Estado Sao Paulo, Ctr Hort, PO PO 28, Campinas, SP - Brazil

^[2] Inst Agron, Unidade Pesquisa & Desenvolvimento, Mococa, SP - Brazil

^[3] Agencia Paulista Tecnol Agronegocios, Polo Extremo Oeste, Andradina, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PLANT NUTRITION; NOV 2021.
• Citações Web of Science: 0

Resumo

Decreasing the nitrogen (N) supply in nutrient solutions can reduce the accumulation of plant biomass and increase yield. Little information, however, is available about the amount and proportion of N reduction, especially for different potato cultivars. The objective of this study was thus to determine the effect of N reduction in the nutrient solution (141.2, 106.2, 71.2 and 36.2 mg L-1) at various times (47, 62, 77 and 92 days after transplantation) on two potato cultivars (Agata and Asterix) grown in an aeroponic system. N reduction did not affect biomass accumulation by ``Agata{''} plants but increased minituber yield by 17% compared to a control treatment (141.2 mg L-1). N reduction, though, affected the biomass accumulation by ``Asterix{''} plants but did not affect minituber yield. These findings suggest cultivar specificity of N management (reduction) in plants cultivated aeroponically. (AU)

• Processo FAPESP: 12/50786-8 - Desenvolvimento de sistema, avaliação da densidade de plantas e condutividade elétrica da solução nutritiva na produção de batata-semente em aeroponia
• Beneficiário: Thiago Leandro Factor
• Modalidade de apoio: Auxílio à Pesquisa - Regular