Sustainable resource optimization for tomato cultivation in a rooftop greenhouse: an 8-year case study

Urban Farm DB summary

This 8-year case study tracked tomato cultivation in a rooftop greenhouse. Peak yield reached 49 g plant−1 day−1 in the 2023 cycle, but overall yield declined by 31.2% across the 8 years. Best water use efficiency reached 36.8 g/L under reduced irrigation. Solar transmittance dropped from 50.9% in 2015 to 46.4% in 2023 due to polycarbonate degradation, and life-cycle global warming impact rose from a minimum of 0.54 kg CO2eq to 0.94 kg CO2eq in 2023.

Only numbers and their conditions are stored, as structured data — never the source's own sentences. Metric and condition names stay in English, as coded.

• 49 g_per_plant_per_day

  peak yield rate(rooftop greenhouse tomato)

  Yield

  region

  Europe

  year

  2023

• 31.2 %↓ Decrease

  yield decline 8yr(rooftop greenhouse tomato)

  YieldControl: start vs end of 8-year study period

  region

  Europe

  year

  8-year study

• 36.8 g_per_l

  water use efficiency best(rooftop greenhouse tomato)

  WaterControl: reduced irrigation cycle

  region

  Europe

• 0.94 kg_co2eq↑ Increase

  global warming potential(rooftop greenhouse tomato)

  ClimateControl: minimum 0.54 kg CO2eq (17-C cycle) vs 0.94 kg CO2eq (2023)

  region

  Europe

  year

  2023

• 46.4 %↓ Decrease

  solar transmittance(rooftop greenhouse)

  DesignControl: 50.9% in 2015 vs 46.4% in 2023, due to polycarbonate degradation

  region

  Europe

  year

  2015-2023

Direction of conclusions

Each author conclusion is recorded only as a coded direction per topic. Read the original for the conclusion itself.

• Yield and productivityMixedWith caveats
• Carbon / GHGMixedWith caveats