At MAISEN, we prepare the soil with organic fertilizer and good microbes. We do not use chemical fertilizer at all.
We need effective strategies since we only have 5 workers managing 150 hectors rice field; otherwise it would not be possible to provide rice of a stable quality. Rice is the staple food. No matter how much effort we put into production or how completely organic it is, we cannot provide rice at a price that is too high. Also, Japan is small, even though we do not use pesticides; the adjacent fields are being sprayed. Naturally, water flows downhill. What if the farmers in higher areas use pesticide? What if the rain contains harmful substances? There will always be risk.
Thus, it is not always the truth to say that all organic food is safe. Pesticides and weed killers specially designed for organic farming are now available. This is the reason why we do not apply the term "organic" to our company despite our rice having no pesticide residue.