The ship carrying the cows was denied entry by various countries.
"They've got more money in their back pocket and as a result they're all looking for and can afford to buy organic produce."
Vegetable and fruit grower T&G Global's profit has more than doubled as strong demand for its apples drove an increase in revenue.
Dairy company A2 Milk has reported a sharp fall in its half-year profit because of significant disruption to its infant formula sales.
The dairy co-op narrowed its profit forecast to between 25 cents per share and 35 cents.
The leak was likely the worst single-point freshwater pollution event in terms of fish killed in New Zealand history.
The strong performance of the agricultural sector has lifted PGG Wrightson's half year profit and led to a resumption of dividends.
There are concerns in the industry over lower demand for non-mānuka varieties of honey.
The study found up to 800,000 Kiwis may be exposed to potentially harmful levels of nitrates in their drinking water.