Principles and Significance of Nitrogen Management for Blackberry Production

Nurjahan Sriti, Jeffrey Williamson, Steven Sargent, Zhanao Deng and Guodong Liu ()
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Nurjahan Sriti: Department of Horticultural Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA
Jeffrey Williamson: Department of Horticultural Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA
Steven Sargent: Department of Horticultural Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA
Zhanao Deng: Gulf Coast Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Wimauma, FL 33598, USA
Guodong Liu: Department of Horticultural Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA

Agriculture, 2024, vol. 14, issue 9, 1-13

Abstract: Blackberry cultivation presents significant opportunities for fruit growers in subtropical regions, where nitrogen (N) is identified as a crucial macronutrient for optimal production. Given the variability in climate and soil conditions, determining the ideal N fertilizer amount can be complex. Effective blackberry cultivation requires careful attention to the principles of nutrient stewardship, including the selection of appropriate N sources, application rates, timing, and placement. Recommended N rates generally range from 25–45 kg/ha in the first year and 45–70 kg/ha in subsequent years, with adjustments based on plant type and regional conditions. The choice of fertilizer, particularly NH 4 + , is beneficial for blackberry plants, which thrive in acidic soils and show improved biomass and chlorophyll levels with this form of N. Research on N-cycling reveals its importance in supporting new plant growth, such as primocane development. However, improper N management, either excessive or insufficient, can negatively impact flower bud production and, consequently, fruit setting and yield. By using databases such as Google Scholar, Scopus, and Web of Science, this review synthesizes existing research on the role of N in blackberry cultivation, emphasizing the importance of precise fertilization practices tailored to regional climate and soil conditions. By highlighting variations in recommended N amounts and underscoring the principles of nutrient stewardship, this review aims to guide growers in achieving sustainable and high-quality blackberry production.

Keywords: primocane; floricane; N forms; N acquisition; N accumulation (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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