GrowTech Americas Flowers 98 Optimization of Rose Crop Production

8/18/98


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Table of Contents

GrowTech Americas Flowers 98 Optimization of Rose Crop Production

GrowTech Americas Flowers 98 Optimization of Rose Crop Production

Rose Production systems

Rose Production systems

Rose Production system: bent canopy

Optimization

Optimization

Optimization

Optimization

Optimization

Optimization of Rose Production

“Model”

Benefits that can be derived from models:

Example of models and their impact on greenhouse production: Decision Support System

Decision Support Software

PPT Slide

Examples of models and their impact on greenhouse production: Spin-off:

Tensiometer-based Irrigation System Design

Tensiometer

Horticultural implication:

Optimization of Rose Production

UCD Rose Modeling Project:

PPT Slide

PPT Slide

PPT Slide

PPT Slide

Model for rose shoot growth

Rose shoot growth model simulation:

PPT Slide

Rose shoot growth model simulation results:

Modeling results

Modeling results

Model for Rose Shoot Development

Events during rose shoot development:

Modeling crop development - methods

Modeling crop development - results

Phases of Rose Development

Optimization of Rose Production

Rose canopy management

What is Leaf Area Index (LAI)?

The canopy’s rate of capture and use of light is related to the amount of leaf material per unit ground area (=Leaf Area Index)

So what is this optimum LAI level?

What happens to light in rose canopies?

Light in Rose canopies

Light in Rose canopies

Fraction of PAR at top

Fraction of PAR at top

Rose Canopy Photosynthesis Analysis in relation to leaf area index

How to make the calculation:

How to make the calculation:

How to make the calculation:

Canopy psyn at various temperatures and LAI

Canopy Photosynthesis vs LAI at 3 temperatures

We don’t yet know the optimal LAI.

LAI=1.7

LAI=2.8

LAI=3.1

LAI=4.2

Conclusions

Conclusions

PPT Slide

Author: J. Heinrich Lieth

Email: jhlieth@ucdavis.edu