こう収量 しゅうりょう品種 ひんしゅじゃなかったです
kō shūryō hinshujanakattadesu

Noun
Desu Copula

The polite, past negative form of 高収量品種

1. Wasn't a high-yield variety.; Wasn't a high-yielding strain.

Past/Perfective
Negative
Polite
Casual Register