Influence of Colored Shade Nets and Salinity on the Development of Roselle Plants

Adequate fertilizer concentration and use of shade nets can favor the development and yield of agricultural crops. The objective of this investigation was to evaluate the growth of roselle plants with nutrient solutions of different electrical conductivities (ECns) (1.0, 2.0, 3.0, 4.0 and 5.0 dS m−1...

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Published in:Agronomy (Basel) 2024-10, Vol.14 (10), p.2252
Main Authors: Freire, Martiliana Mayani, Rodrigues, Paulo Hercílio Viegas, Duarte, Sergio Nascimento, Barros, Timóteo Herculino da Silva, Brito, Giulia Beserra da Silva, Marques, Patrícia Angélica Alves
Format: Article
Language:English
Subjects:
Abiotic stress
Agricultural production
Analysis
Crops
Electric properties
Electrical conductivity
Farm buildings
Fertilizers
Flowers & plants
Hibiscus sabdariffa L
Humidity
Impact analysis
Leaves
Light
medicinal plants
Metabolism
Nets
nutrient solution
Nutrient solutions
Physiology
Plant growth
Plant layout
Plant production
Plants
Plants (botany)
Radiation
Roselle
Salinity
Sensors
Shade
Shoots
solar radiation
Variance analysis
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Summary:Adequate fertilizer concentration and use of shade nets can favor the development and yield of agricultural crops. The objective of this investigation was to evaluate the growth of roselle plants with nutrient solutions of different electrical conductivities (ECns) (1.0, 2.0, 3.0, 4.0 and 5.0 dS m−1) and under different colored shade nets (red, blue, black) compared with full sun. The experiments were conducted in a controlled greenhouse environment and in full sun in the Plant Production Department of ESALQ-USP, Piracicaba, SP, Brazil. The experiments were organized using a 4 × 5 randomized block design. The results of analysis of variance and regression showed a significant impact of EC and colored shade nets on plant height, stem diameter, number of leaves, number of flowers, fresh and dry mass of shoots and fresh and dry calyxes. The data were subjected to analysis of variance and regression, which showed a quadratic effect for the variables studied, with increasing values up to 3.0 dS m−1; after this value, there was a decrease. Increasing ECns up to approximately 3.0 dS m−1 promoted increments of 2.34% in plant height, 7.21% in number of leaves, 19.76% in shoot fresh mass and 12.38% in shoot dry mass.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy14102252