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

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: JOURNAL OF PLANT NUTRITION; NOV 2021.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 12/50786-8 - System development, plant density and electric conductivity evaluation in the aeroponic potato seed production
• Grantee: Thiago Leandro Factor
• Support Opportunities: Regular Research Grants