XENOFALLOW
Plan a field

NASA Space Apps Challenge · Team Xenofallow

Know what to plant, where, when, and how much water it will take.

Plan a field How the model works
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What Where When How

01 · Mission

Egypt farms with every drop counted

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Our answer

02 · How it works

From a GPS fix to a planting decision

  1. 01

  2. 02

  3. 03

  4. 04

  5. 05

03 · Platform

Field planner

Season
Soil texture

What matters most to you?

Best matches

Four-season rotation

    Full ranking

    04 · Science

    The model, equation by equation

    ET₀ = [0.408 Δ (Rn − G) + γ · 900/(T+273) · u₂ (es − ea)] / [Δ + γ (1 + 0.34 u₂)]

    ETc = Kc × ET₀

    Y = 100 − b (ECe − a)

    r(T) = 0 · ↗ · 1 · ↘ · 0

    0.10
    0.30
    0.60
    +0.30
    +0.30
    −0.15

    05 · Data

    Sources

    06 · Roadmap

    What works today

    Validation plan

    07 · Team

    Team Xenofallow

    08 · References

    References

    1. FAO (1995). Irrigation in Africa in figures: Egypt — geography, population and water resources. fao.org/4/v8260b
    2. FAO AQUASTAT (2005). Irrigation in Africa in figures — AQUASTAT Survey 2005: Egypt country profile. EGY_egypt_cp.pdf
    3. NASA Langley Research Center. POWER Climatology API v2.10, community AG, 2001–2025 climatology. power.larc.nasa.gov
    4. Allen, R.G., Pereira, L.S., Raes, D., Smith, M. (1998). Crop evapotranspiration. FAO Irrigation and Drainage Paper 56. Chapters 3 and 6, Tables 11–12. fao.org/4/x0490e
    5. Ayers, R.S., Westcot, D.W. (1985). Water quality for agriculture. FAO Irrigation and Drainage Paper 29 Rev. 1, Tables 4–5 (after Maas & Hoffman 1977; Maas 1984). fao.org/4/t0234e
    6. FAO EcoCrop database, as distributed in the OpenCLIM EcoCrop repository (EcoCrop_DB.csv). github.com/OpenCLIM/ecocrop
    7. Brouwer, C., Heibloem, M. (1986). Irrigation Water Management Training Manual 3: Irrigation water needs, Table 14 and section 4.2 (effective rainfall). fao.org/4/s2022e
    8. Brouwer, C. et al. (1989). Irrigation Water Management Training Manual 4: Irrigation scheduling, Annex I, Table 8 (field application efficiency). fao.org/3/t7202e
    9. FAO. Post-harvest handling: recommended temperature and relative humidity for fruits and vegetables, Table 5 (Cantwell 1999; Sargent et al. 2000). fao.org/4/y4893e
    10. FAO. Conservation Agriculture: species diversification and crop rotation. fao.org/conservation-agriculture
    11. Runfola, D. et al. (2020). geoBoundaries: a global database of political administrative boundaries. EGY ADM0/ADM1 (OpenStreetMap source, ODbL). geoboundaries.org
    12. ISRIC World Soil Information. SoilGrids 250 m v2.0; REST API status notice. docs.isric.org/globaldata/soilgrids
    13. Hackett, C. (1991). Mobilising environmental information about lesser-known plants. Agroforestry Systems 14: 131–143 (EcoCrop response method).