Figure 1.
Figure 2.
Figure 3.
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% | - |
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% | - |
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% | - |
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% | - |
Baseline meal characteristics for Czech schoolchildren aged 7–10 and 11–14 yearsTabelle 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 |
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 |
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% | - |
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% | - |