Table 1.
Overview of key parameters, data sources, and formulas used to model the cost implications of replacing imported apples with locally grown conventional and organic apples in Czech school meals.
Tabelle 1. Übersicht über die wichtigsten Parameter, Datenquellen und Formeln, die zur Modellierung der Kostenauswirkungen des Ersatzes importierter Äpfel durch lokal angebaute konventionelle und biologische Äpfel in tschechischen Schulmahlzeiten verwendet werden.
| Parameter | Formula/source | Description |
|---|---|---|
| Daily meal weight (g) | From school canteen data | Total weight of food served per child per day |
| Meal cost per portion (CZK) and Euro equivalent | From school canteen data | Base cost before substitution |
| Apple portion per meal (g) | From school canteen data | Standardized by age group (32.5 or 40 g) |
| Apple unit prices (CZK/kg) and (€/kg) equivalent | Farmer, importer, and school canteen data | Different by source and production method |
| Share of organic/local apples (%) | Scenario dependent | Fixed at 5% of total meal weight or full replacement |
| New apple cost per meal (CZK) and Euro equivalent | Weight × price | Split into conventional and organic portions |
| Total new meal cost (CZK) and Euro equivalent | Original meal cost + apple cost | Reflects the impact of substitution |
| % Change in meal cost | (New – original)/original × 100 | Indicates cost feasibility |
Table 2.
Baseline meal characteristics for Czech schoolchildren aged 7–10 and 11–14 years
Tabelle 2. Grundlegende Mahlzeitenmerkmale für tschechische Schulkinder im Alter von 7–10 und 11–14 Jahren
| Age group | Meal weight (g) | Apple portion (g) | Base meal price (CZK) | Base meal price (€) |
|---|---|---|---|---|
| 7–10 years | 473 | 32.5 | 35 | 1.4 |
| 11–14 years | 538 | 40.0 | 38 | 1.52 |
Figure 1.
Methodological framework for data collection, price modeling, and replacement models
Abbildung 1. Methodischer Rahmen für Datenerhebung, Preismodellierung und Ersatzmodelle
Figure 2.
Cost impact of replacing imported conventional apples with local apples in Czech school meals
Abbildung 2. Kostenauswirkungen des Ersatzes importierter konventioneller Äpfel durch lokale Äpfel in tschechischen Schulmahlzeiten
Figure 3.
Apple cost per meal portion under different sourcing scenarios in Czech school meals
Abbildung 3. Apfelkosten pro Mahlzeitportion unter verschiedenen Beschaffungsszenarien in tschechischen Schulmahlzeiten
Table 3.
Cost and quantity impact of replacing imported conventional apples with 5% local organic apples in Czech school meals (age 7–10)
Tabelle 3. Kosten- und Mengenauswirkungen des Ersatzes importierter konventioneller Äpfel durch 5 % lokale Bio-Äpfel in tschechischen Schulmahlzeiten (Alter 7–10)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Total weight of daily meal | - | 473 g | - |
| Meal price per portion | - | 35 CZK | 1.4 € |
| Current apple quantity (conventional) | - | 32.5 g (0.0325 kg) | - |
| Price of imported conventional apples | - | 22 CZK/kg | 0.88 €/kg |
| Price of local organic apples | - | 40 CZK/kg | 1.6 €/kg |
| Required organic share of meal | - | 5% | - |
| 5% of 473 g (organic inclusion target) | 473 × 0.05 | 23.65 g | - |
| Organic apple portion | Targeted for 5% share | 23.65 g (0.02365 kg) | - |
| Remaining conventional apple portion | 32.5–23.65 g | 8.85 g (0.00885 kg) | - |
| Original apple cost per meal | 0.0325 kg × 22 CZK/kg | 0.715 CZK | 0.028 € |
| New local organic apple cost per meal | 0.02365 kg × 40 CZK/kg | 0.946 CZK | 0.038 € |
| New imported conventional apple cost per meal | 0.00885 kg × 22 CZK/kg | 0.1947 CZK | 0.0078 € |
| Total apple cost aher change | 0.946 + 0.1947 CZK | 1.1407 CZK | 0.046 € |
| Increase in apple cost per meal | 1.1407 – 0.715 CZK | 0.4257 CZK | 0.017 € |
| New total meal price | 35 + 0.4257 CZK | 35.43 CZK | 1.42 € |
| Percentage increase in total meal price | (0.4257/35)× 100 | 1.22% | - |
Table 4.
Cost and quantity impact of replacing local conventional apples with 5% local organic apples in Czech school meals (age 7–10)
Tabelle 4. Kosten- und Mengenauswirkungen des Ersatzes lokaler konventioneller Äpfel durch 5 % lokale Bio-Äpfel in tschechischen Schulmahlzeiten (Alter 7–10)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Total weight of daily meal | - | 473 g | - |
| Meal price per portion | - | 35 CZK | 1.4 € |
| Current apple quantity (conventional) | - | 32.5 g (0.0325 kg) | - |
| Price of local conventional apples | - | 32 CZK/kg | 1.28 € |
| Price of local organic apples | - | 40 CZK/kg | 1.6 € |
| Required organic share of meal | - | 5% | - |
| 5% of 473 g (organic inclusion target) | 473 × 0.05 | 23.65 g | - |
| Local organic apple portion | Targeted for 5% share | 23.65 g (0.02365 kg) | - |
| Remaining local conventional apple portion | 32.5–23.65 g | 8.85 g (0.00885 kg) | - |
| Original apple cost per meal | 0.0325 kg × 32 CZK/kg | 1.04 CZK | 0.042 € |
| New local organic apple cost per meal | 0.02365 × 40 | 0.946 CZK | 0.038 € |
| New local conventional apple cost per meal | 0.00885 × 32 | 0.2832 CZK | 0.0113 € |
| Total apple cost aher change | (0.02365 × 40) + (0.00885 × 32) | 1.2292 CZK | 0.049 € |
| Increase in apple cost per meal | 1.2292 – 1.04 CZK | 0.1892 CZK | 0.0076 € |
| New total meal price | 35 + 0.1892 CZK | 35.1892 CZK | 1.41 € |
| Percentage increase in total meal price | (0.1892/35)× 100 | 0.54% | - |
Table 5.
Cost and quantity impact of replacing imported apples with local organic and conventional apples in Czech school meals (age 7–10)
Tabelle 5. Kosten- und Mengenauswirkungen des Ersatzes importierter Äpfel durch lokale Bio- und konventionelle Äpfel in tschechischen Schulmahlzeiten (Alter 7–10)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Daily meal weight | - | 473 g | - |
| Daily apple portion per person | - | 32.5 g | - |
| Local organic apples in this scenario | - | 23.65 g (0.02365 kg) | - |
| Local conventional apples in this scenario | - | 8.85 g (0.00885 kg) | - |
| Original cost (100% imported apples) | 0.0325 × 22 CZK/kg | 0.715 CZK | 0.029 € |
| New cost (local organic + local conventional) | 0.02365 × 40 + 0.00885 × 32 | 1.2292 CZK | 0.049 € |
| Cost increase per meal | 1.2292 – 0.715 | 0.5142 CZK | 0.021 € |
| New total meal price | 35 + 0.5142 CZK | 35.5142 CZK | 1.421 € |
| % increase in meal price | (0.5142/35)× 100 | 1.47% | - |
Table 6.
Cost and quantity impact of replacing imported conventional apples with 5% local organic apples in Czech school meals (age 11–14)
Tabelle 6. Kosten- und Mengenauswirkungen des Ersatzes importierter konventioneller Äpfel durch 5 % lokale Bio-Äpfel in tschechischen Schulmahlzeiten (Alter 11–14)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Total weight of daily meal | - | 538 g | - |
| Meal price per portion | - | 38 CZK | 1.52 € |
| Current apple quantity (conventional) | - | 40 g | - |
| Price of imported conventional apples | - | 22 CZK/kg | 0.88 € |
| Price of local organic apples | - | 40 CZK/kg | 1.6 € |
| Required organic share of meal | - | 5% | - |
| 5% of 538 g (organic inclusion target) | 538 × 0.05 | 26.9 g | - |
| Local organic apple portion | Targeted for 5% share | 26.9 g (0.0269 kg) | - |
| Remaining local conventional apple portion | 40–26.9 g | 13.1 g (0.0131 kg) | - |
| Original apple cost per meal | 0.04 kg × 22 CZK/kg | 0.88 CZK | 0.035 € |
| New local organic apple cost per meal | 0.0269 kg × 40 CZK | 1.076 CZK | 0.043 € |
| New imported conventional apple cost per meal | 0.0131 kg × 22 CZK | 0.2882 CZK | 0.012 € |
| Total apple cost aher change | (0.0269 × 40) + (0.0131 × 22) | 1.3642 CZK | 0.055 € |
| Increase in apple cost per meal | 1.3642 – 0.88 CZK | 0.4842 CZK | 0.019 € |
| New total meal price | 38 + 0.4842 CZK | 38.4842 CZK | 1.539 € |
| Percentage increase in total meal price | (0.4842/38)× 100 | 1.27% | - |
Table 7.
Cost and quantity impact of replacing local conventional apples with 5% local organic apples in Czech school meals (age 11–14)
Tabelle 7. Kosten- und Mengenauswirkungen des Ersatzes lokaler konventioneller Äpfel durch 5 % lokale Bio-Äpfel in tschechischen Schulmahlzeiten (Alter 11–14)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Total weight of daily meal | - | 538 g | - |
| Meal price per portion | - | 38 CZK | 1.52 € |
| Current apple quantity (conventional) | - | 40 g | - |
| Price of local conventional apples | - | 32 CZK | 1.28 € |
| Price of local organic apples | - | 40 CZK | 1.6 € |
| Required organic share of meal | - | 5% | - |
| 5% of 538 g (organic inclusion target) | 538 × 0.05 | 26.9 g | - |
| Local organic apple portion | Targeted for 5% share | 26.9 g (0.0269 kg) | - |
| Remaining local conventional apple portion | 40–26.9 g | 13.1 g (0.0131 kg) | - |
| Original apple cost per meal | 0.04 kg × 32 CZK/kg | 1.28 CZK | 0.051 € |
| New local organic apple cost per meal | 0.0269 kg × 40 CZK | 1.076 CZK | 0.043 € |
| New local conventional apple cost per meal | 0.0131 kg × 32 CZK | 0.4192 CZK | 0.017 € |
| Total apple cost aher change | 0.0269 × 40 + 0.0131 × 32 | 1.4952 CZK | 0.0598 € |
| Increase in apple cost per meal | 1.4952 – 1.28 | 0.2152 CZK | 0.009 € |
| New total meal price | 38 + 0.2152 CZK | 38.2152 CZK | 1.529 € |
| Percentage increase in total meal price | (0.2152/38)× 100 | 0.57% | - |
Table 8.
Cost and quantity impact of replacing imported apples with local organic and conventional apples in Czech school meals (age 11–14)
Tabelle 8. Kosten- und Mengenauswirkungen des Ersatzes importierter Äpfel durch lokale Bio- und konventionelle Äpfel in tschechischen Schulmahlzeiten (11–14 Jahre)
| Parameter | Value/formula | Result | Euro (€) equivalent |
|---|---|---|---|
| Daily meal weight | - | 538 g | - |
| Daily apple portion per person | - | 40 g | - |
| Local organic apples in this scenario | - | 26.9 g (0.0269 kg) | - |
| Local conventional apples in this scenario | - | 13.1 g (0.0131 kg) | - |
| Original cost (100% imported apples) | 0.04 × 22 CZK/kg | 0.88 CZK | 0.035 € |
| New cost (local organic + local conventional) | 0.0269 × 40 + 0.0131 × 32 | 1.4952 CZK | 0.0598 € |
| Cost increase per meal | 1.4952 – 0.88 | 0.6152 CZK | 0.025 € |
| New total meal price | 38 + 0.6152 | 38.6152 CZK | 1.545 € |
| % increase in meal price | (0.6152/38)× 100 | 1.62% | - |