Physiology and production of yellow passion fruit with hydroabsorbent polymer and different irrigation depths1
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Data
2020-10-02
Autores
Cavalcante, Adailza Guilherme [UNESP]
Cavalcante, Lourival Ferreira
Souto, Antônio Gustavo De Luna
Cavalcante, Alian Cássio Pereira
Araújo, Danila Lima De
Nascimento, Ana Paula Pereira Do
Zanuncio, José Cola
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Viçosa
Resumo
The yellow passion fruit is grown under different edaphoclimatic conditions. Irrigation standardizes and increases the development and productivity of the plants. The objective of this study was to evaluate the physiological and productive aspects of yellow passion fruit with application of hydroabsorbent polymer at different irrigation depths. The experimental design was in randomized blocks in a 2 × 5 factorial arrangement. The treatments were soil with and without polymer and five dephts of irrigation (60 to 100% of crop evapotranspiration). Initial, maximum, and variable chlorophyll fluorescence, physiology (photosynthetic rate, internal carbon concentration, transpiration, stomatal conductance, water use efficiency, and instantaneous carboxylation efficiency) and production of yellow passion fruit were the variables analyzed. The hydrogel probably retained water in its structure, reducing the ability to dissipate excess energy. Setting the irrigation depth at an estimated 82% of crop evapotranspiration increased photosynthetic rate, stomatal conductance, and water use efficiency of yellow passion fruit plants. Maximum yield was 17.2 t ha-1 in irrigated plants at 100% evapotranspiration (ETc) in soil without hydrogel.
Descrição
Palavras-chave
Production components, Passiflora edulis, Hydrogel, Irrigation management
Como citar
Revista Ceres. Universidade Federal de Viçosa, v. 67, n. 5, p. 365-373, 2020.