Concern over government policies has driven a sharp fall in farmer confidence from recent record highs.
Farmers across all sectors were now less positive about the outlook for the agricultural industry, Rabobank's latest rural confidence survey said.
Concern over policies was the main reason cited by farmers who were expecting conditions to worsen.
The survey - completed last month - found the number of farmers expecting the rural economy to improve in the next 12 months had fallen to 29%, down from 46% last quarter.
The reduction in confidence was the largest drop in one quarter since March last year and, combined with the decline in sentiment recorded in the previous quarter, represented a 41% fall in rural confidence since the record high reached in June's survey.