Microclimatic changes in cultivating systems for the production of Collard greens baby leaf

Autores

  • Gustavo Castilho Beruski Universidade de São Paulo - ESALQ / USP
  • Rosana Fernandes Otto Universidade Estadual de Ponta Grossa
  • Jhone de Souza Espíndola Universidade Estadual de Ponta Grossa

DOI:

https://doi.org/10.15361/1984-5529.2016v44n1p56-63

Resumo

With the growing demand for products beneficial to human health, olericulturists developed the marketing of baby leaf. Various cultivation environments provide microclimatic changes, which in turn will change the entire development of plants. Thus, the work aimed to study the productive response of collard greens baby leaf in four cultivations systems [low tunnels with plastic (PT) and with sombrite (SB), nonwoven floating system (NW) and natural environment (NE)] and at five harvest times [21; 28; 35; 42 and 49 days after sow­ing (DAS)]. The experiment was conducted in Ponta Grossa - PR, between 09-01 and 10-20-2011. At 14 DAS was held thinning, keeping the density of 500 plants m-2. At each moment of harvest, it were evaluated the number of leaves per plant (NL), plant height (PH), fresh (FM) and dry (DM) phytomasses of the plants, leaf area index (LAI) and productivity at the final collection point. The average air temperature (Ta) and photosynthetically active radiation (PAR) were monitored in each cultivation environment. Throughout the growing season it was found rapid growth of plants grown under PT compared to SB, characterized by greater accumulation of FM and DM. The baby leaf cultivation in the PT environment showed four days precocity in the harvest in relation to the NW, six days in NE and eight days for plants grown under SB. The low PAR radiation values within the SB environment interfered with the growth and development of the plants grown therein.

Biografia do Autor

Gustavo Castilho Beruski, Universidade de São Paulo - ESALQ / USP

Doutorando em Engenharia de Sistemas Agrícolas, Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, ESALQ/USP, Piracicaba - SP, Fone: (19) 3429-4217

Rosana Fernandes Otto, Universidade Estadual de Ponta Grossa

Setor de Ciências Agrárias e de Tecnologia, Departamento de Fitotecnia e Fitossanidade

Jhone de Souza Espíndola, Universidade Estadual de Ponta Grossa

Setor de Ciências Agrárias e de Tecnologia, Departamento de Fitotecnia e Fitossanidade. Doutorando em Agronomia

Publicado

22/12/2015

Edição

Seção

Horticultura - Horticulture