History (Feb. 2022 ~ Aug. 2024)
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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.
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Mar. 2021
Disappointment
We found that the soil quality was not appropriate for farming.
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Feb. 2022
Replacement
We replaced surface soil with red soil.
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Mar. 2022
Poles
We installed iron poles for sensor network and tethered drone.
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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.
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Aug. 2022
Infrastructure
We installed infrastructure (electricity, communication) and photovoltaic (PV) generator.
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Oct. 2022
Sensor networks
We installed sensor network.
Drones
We started operating drones.
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Dec. 2022
Bark compost and rice bran
We added bark compost and rice bran to soil for fertilization.
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Jan. 2023
Oats
We started cultivating green manure (oats).
Leaf mold
We started producing leaf mold.
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Feb. 2023
Irrigation
We installed irrigation system.
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May. 2023
Plow
We plowed growing oats and antibiotic-free cow manure for fertilization.
Then, soil electrical conductivity (EC) was improved.
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Jun. 2023
Trimming
We trimmed surrounding trees for improving light environment..
Soybeans
We started cultivating soybeans.
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Aug. 2023
Improved
Growth state of soybeans was significantly improved by organic soil fertilization.
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Sep. 2023
Signboard
We put up a signboard.
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Nov. 2023
Satellite internet antenna
We installed a satellite internet anntena for off grid high speed internet.
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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.
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Feb. 2024
Oats
We sowed oats in the field.
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Mar. 2024
Leaf mold
We started producing this year's portion of leaf mold.
Switchboard enclosure
We installed a compact outdoor switchboard enclosure.
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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.
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Jun. 2024
Sowing
We sowed wheats, soybeans and maize in the field.
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Aug. 2024
3D model
3D model of the field.