Together, those factors brought the company's full-year results towards the midpoint of its guidance range.
PGW chief executive Mark Dewdney said the company's New Zealand seed and grain business was most affected by the severe weather events in April - including two sub-tropical cyclones.
Autumn demand for seed products was less than expected as many farmers had been unable to complete regrassing and autumn pasture renewal plans.
For grain, much lower harvest yields had reduced earnings from the company's processing and drying facilities.
PGW's livestock business delivered a record operating ebitda as strong international demand for protein and lower stock numbers combined to push up livestock prices and retail performed ''extremely well'', Mr Dewdney said.
In contrast, the performance of PGW's wool procurement and brokering business was affected by the collapse of global crossbred wool prices over the past 15 months, resulting in much less crossbred wool sold. The company's wool export business increasing its profitability was was ''pleasing'', he said.
South America was a good performer in seed and grain during 2017, bouncing back with a lift on last year's operating ebitda.
As the company entered its 2018 financial year, market conditions were improving.
The weather impact on autumn planting had affected many New Zealand farmers and the implications of that, both on livestock supply and crop production, would be a key factor in the year ahead.
In South America, there had been a positive recovery this year.
The long-term effects of the April 2016 flooding on farmer confidence, and their demand for inputs, was likely to remain a constraint in the near term.
- Otago Daily Times