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Table 2 Mean dry yield on Eniwa and Narita farms

From: Characterisation of soils under long-term crop cultivation without fertilisers: a case study in Japan

Sample

Mean dry yield (t ha−1 crop−1)

Plants

Eniwa unfertilised farm

3.2

Tomato

Eniwa control farm

2.6

Tomato

Narita unfertilised farm

4.2

Green onion

Narita control farm

2.0

Green onion