Translation guide
In Japanese, the most common term for chemical fertilizer is 化学肥料 (かがくひりょう). In everyday conversation, it is often shortened to 化成肥料 (かせいひりょう) or simply 肥料 (ひりょう) when context makes the type clear. This guide covers the standard term, its abbreviation, and how to talk about chemical fertilizers naturally.
The most direct and formal way to say 'chemical fertilizer'
This is the standard, formal term for chemical fertilizer. It is used in technical, agricultural, and official contexts.
化学肥料を使いすぎると土が悪くなります。
If you use too much chemical fertilizer, the soil will deteriorate.
この農家は化学肥料を一切使っていません。
This farmer doesn't use any chemical fertilizer at all.
A shorter, everyday term for chemical fertilizer
This is a common abbreviation of 化学肥料. It is widely used in gardening, farming, and casual conversation.
化成肥料は即効性があります。
Chemical fertilizer has a quick effect.
ホームセンターで化成肥料を買ってきた。
I bought some chemical fertilizer at the home improvement store.
Using the generic word for fertilizer when the chemical type is implied
肥料 simply means 'fertilizer'. In many contexts, especially when contrasting with organic fertilizer, it is understood to mean chemical fertilizer. However, to be explicit, use 化学肥料 or 化成肥料.
肥料をあげすぎないでください。
Don't give it too much fertilizer.
有機肥料と肥料、どちらがいいですか？
Which is better, organic fertilizer or chemical fertilizer?
化成肥料 is a contraction of 化学肥料 and is perfectly acceptable in most situations. It is not slang; it is the standard short form used in gardening and agriculture.
If you need to explicitly contrast with organic fertilizer, use 化学肥料 (chemical) vs. 有機肥料 (organic). Using 肥料 alone might be ambiguous.