Seed potato minituber production in an aeroponic system under tropical conditions: electrical conductivity and plant density

Autor(es)

Calori, Alex Humberto ^[1] ; Factor, Thiago Leandro ^[2] ; Feltran, Jose Carlos ^[1] ; Watanabe, Eduardo Yuji ^[3] ; de Moraes, Carolina Cinto ^[1] ; Villani Purquerio, Luis Felipe ^[1]

Afiliação do(s) autor(es)

^[1] Inst Agron Estado Sao Paulo, Hort Ctr, BR-13012970 Campinas, SP - Brazil

^[2] Agencia Paulista Tecnol Agronegocios, Northeastern Pole, Mococa, SP - Brazil

^[3] Agencia Paulista Tecnol Agronegocios, Dept Res & Dev, Itarare, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PLANT NUTRITION; v. 41, n. 17, p. 2200-2209, 2018.
• Citações Web of Science: 0

Resumo

Most seed potatoes in Brazil are produced in beds, pots or boxes containing substrate, but the yields are low. Aeroponic systems are one strategy for increasing the yield. However, the concentration of nutrient solutions, managed by varying the electrical conductivity (EC), is of upmost importance and can alter plant responses. Plant density is another important factor for obtaining high yields. The objective of this study was thus to determine the effect of nutrient-solution EC and plant density on plant and seed potato production in aeroponic system. The experimental design was a randomized block with a split-plot design and four replicates, with plots for EC and subplots for plant density. Two potato cultivars were tested. The best ECs for Agata and Asterix were 2.1 and 1.7dSm(-1), respectively. The highest plant density (100 plants m(-2)) for both cultivars produced the highest minituber yield and economic feasibility. (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