Sourcing labour remained a challenge, the document said.
Tomato growing businesses were operating with 40-60 per cent of employee numbers due to the effects of Covid-19 and border restrictions.
Tomatoes NZ chair Barry O'Neil said the group was hearing constantly from the media and the public about high prices, yet growers were not seeing the high prices due to increased costs.
"When supply is low and demand is high in winter the price of tomatoes is high but people forget that in summer prices can get very, very low.
"Last year we saw tomatoes selling for 8 cents a kilo," he said.
"That fluctuation in the industry is not sustainable.
"We thought we'd bring the issues that are impacting growers so we can have a more informed discussion with our consumers, the media and with politicians."
There were solutions to some of the issues but they were not quick fixes and would require a level of investment, O'Neil said.
On the cost of energy, for example, policies and actions that supported undercover crop growers to transition to decarbonised heating would help.
"Emission Trading Scheme charges also have a great impact on our growers.
"We think protection should be given to domestic growers as imported fresh tomatoes from Australia are not subject to the same ETS or carbon tax production costs, which leads to unfair competition," he said.
"We estimate that 25 per cent of small to medium growers have left the industry in the last four years due to some of these issues and we are worried that we could end up in a situation where we are heavily relying on imported products because it's too expensive to grow tomatoes here.
"Unless we can get some change to policy settings that are impacting our producers that's a real risk so that's why we are putting this document out."
- RNZ
