Fertilizer Recommendations for Sugarcane Pre-sprouted Seedling Production in Ebb-and-Flow Subirrigation Benches

Ebb-and-flow subirrigation can save water and nutrients by reusing fertilizer solution (FS). Since there is no leaching and salts tend to accumulate over time in the growing media, nutrient concentrations should be lower than applied by other irrigation systems. However, fertilizer requirements for...

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Bibliographic Details
Published in:Sugar tech : an international journal of sugar crops & related industries 2020-12, Vol.22 (6), p.978-986
Main Authors: Macan, Natalia P. F., Ferrarezi, Rhuanito S., Matsura, Edson E., Maia, Aline H. N., Xavier, Mauro A., da Silva, Thomaz Penteado Cyrino Teixeira
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Crop growth
Cultivars
Electrical conductivity
Electrical resistivity
Evaluation
Fertilization
Fertilizer industry
Fertilizers
Flow
Flow system
Irrigation
Irrigation systems
Leaching
Life Sciences
Nutrient concentrations
Nutrients
Nutritional status
Plant growth
Research Article
Salts
Seedlings
Substrates
Sugarcane
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Summary:Ebb-and-flow subirrigation can save water and nutrients by reusing fertilizer solution (FS). Since there is no leaching and salts tend to accumulate over time in the growing media, nutrient concentrations should be lower than applied by other irrigation systems. However, fertilizer requirements for subirrigated sugarcane ( Saccharum   species hybrid) pre-sprouted seedlings (SPSS) are not yet available. Our objective was to evaluate two FS concentrations to produce SPSS in an ebb-and-flow system: 33% and 67% of the recommended concentrations for seedlings produced using overhead irrigation. We tested three cultivars (IACSP95-5000, IACSP95-5094 and IAC91-1099) in terms of crop growth and macronutrient content of stems and leaves. There was no effect of FS concentrations on 1st ligule height, diameter, and dry weight. Irrigation with both FS concentrations resulted in seedlings with adequate nutritional status. Substrate electrical conductivity (EC) increased for treatment irrigated with FS 67%, indicating excessive fertilization. For FS 33%, substrate EC remained stable. FS with concentration of 33% can be used to produce SPSS in ebb-and-flow benches, resulting in adequate plant growth and fertilizer savings.
ISSN:0972-1525
0974-0740
0972-1525
DOI:10.1007/s12355-020-00847-6