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Modeling Cut Rose Yield Over an 18-Month Period After Compost Amendment Using Repeated Sigmoidal Gompertz Curve
E A de Nijs1, A Tietema1, R Bol1,2
1Institute for Biodiversity and Ecosystem Dynamics (IBED) University of Amsterdam Amsterdam the Netherlands.
Plant-Environment Interactions (Hoboken, N.J.)
|May 2, 2025
Summary
Compost amendment significantly boosts early cut rose yield, with benefits diminishing as the crop matures. Repeated Gompertz growth curves effectively model these yield dynamics for sustainable agriculture.
Area of Science:
- Horticulture and Agronomy
- Agricultural Modeling
Background:
- Optimizing perennial crop production requires understanding growth and development patterns.
- Growth models are essential for evaluating crop responses to agricultural treatments.
Purpose of the Study:
- To assess the effectiveness of repeated Gompertz growth curves in modeling cut rose yield dynamics.
- To evaluate the impact of compost amendment on cut rose yield over an 18-month period.
Main Methods:
- Collected daily cut rose yield data (stems per plot) over 18 months.
- Applied repeated Gompertz growth curves and Generalized Additive Mixed Models for analysis.
- Compared model accuracy in capturing yield dynamics across different compost treatments.
Main Results:
- Repeated Gompertz curves accurately modeled individual yield flushes with high fidelity.
- Compost amendment significantly increased early-stage rose yield, particularly with full fertigation.
- Yield differences between treatments decreased as the crop matured, highlighting early-stage benefits.
Conclusions:
- Repeated Gompertz growth curves provide an adequate framework for analyzing dynamic yield responses to management practices.
- Compost amendment shows significant potential for enhancing sustainable cut rose production, especially in initial growth phases.
- Optimized compost application can improve yield and support environmental sustainability in floriculture.
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