His administration in Higo was a great success, and in particular he exhibited his remarkable ability, beyond the well-known flood control, in commercial policies such as making wheat a local specialty and using it to settle trade with Spain and Portugal.
肥後における治績は良好で、田麦を特産品化し南蛮貿易の決済に当てるなど、世に知られた治水以外に商業政策でも優れた手腕を発揮した。