遅効 ちこう せい肥料 ひりょうでしょう
chi kōsei hiryōdeshō

Noun
Desu Copula

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

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

Polite
Presumptive
Conjecture