History (Feb. 2022 ~ Aug. 2024)

• Sep. 2020

  Origination

  We found a construction waste soil place of two ares (200 square meters) at Science Tokyo Suzukakedai Campus as suitable for SSS smart agriculture field.

  

• Mar. 2021

  Disappointment

  We found that the soil quality was not appropriate for farming.

• Feb. 2022

  Replacement

  We replaced surface soil with red soil.
  

  

• Mar. 2022

  Poles

  We installed iron poles for sensor network and tethered drone.

  

• Jul. 2022

  Trimming

  We trimmed surrounding trees for improving light environment.

  

  Fertilizing

  We applied 10 kg of chemical fertilizer specially compounded for legumes and potatos. This was the first, last and only time we applied chemical fertilizer.

  Time to start farming

  We started cultivating soybeans.

  

• Aug. 2022

  Infrastructure

  We installed infrastructure (electricity, communication) and photovoltaic (PV) generator.
  

  

• Oct. 2022

  Sensor networks

  We installed sensor network.
  

  

  Drones

  We started operating drones.
  

  

• Dec. 2022

  Bark compost and rice bran

  We added bark compost and rice bran to soil for fertilization.

  

• Jan. 2023

  Oats

  We started cultivating green manure (oats).

  

  Leaf mold

  We started producing leaf mold.
  

  

• Feb. 2023

  Irrigation

  We installed irrigation system.

  

• May. 2023

  Plow

  We plowed growing oats and antibiotic-free cow manure for fertilization.

  

  Then, soil electrical conductivity (EC) was improved.

  

• Jun. 2023

  Trimming

  We trimmed surrounding trees for improving light environment..
  

  

  Soybeans

  We started cultivating soybeans.
  

  

• Aug. 2023

  Improved

  Growth state of soybeans was significantly improved by organic soil fertilization.

  

• Sep. 2023

  Signboard

  We put up a signboard.

  

• Nov. 2023

  Satellite internet antenna

  We installed a satellite internet anntena for off grid high speed internet.

• Jan. 2024

  Self-sustaining agriculutural system

  We confirmed that off-grid communication is possible by the self-sustaining agricultural system based on LEO satellites and photovoltaic (PV) systems.

• Feb. 2024

  Oats

  We sowed oats in the field.

  

• Mar. 2024

  Leaf mold

  We started producing this year's portion of leaf mold.

  

  Switchboard enclosure

  We installed a compact outdoor switchboard enclosure.

  

• May. 2024

  Plow

  We plowed growing oats and antibiotic-free cow manure for fertilization. The central area was left uncut for 3D reconstruction experiment.

  Then, soil electrical conductivity (EC) was improved.

  

  The whole the area was plowed.

• Jun. 2024

  Sowing

  We sowed wheats, soybeans and maize in the field.

• Aug. 2024

  3D model

  3D model of the field.