緩効 かんこう せい肥料 ひりょうでしょう
kankō sei hiryōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 緩効性肥料

1. Slow-release fertilizer, probably.; It will likely be slow-release fertilizer.

Polite
Presumptive
Conjecture