The two largest farm properties - 158ha Willowbank Farm and 148.5ha Taipo Park, which both border the Kakanui River - were advertised by CRT Real Estate last weekend.
CRT agent Derek Austin said six smaller properties ranging in size from 6ha to 32ha were also being sold by Nikken Seil and would be advertised shortly.
The eight farm properties total about 460ha and most have substantial improvements, including houses.
The farm sales follow the decision by the food-production company in June to sell the 22ha business park site just north of the Oamaru boundary.
It was bought by Auckland company TR Group, which plans to subdivide it.
At this stage, Teschemakers - the former Catholic girls' boarding school just south of Oamaru which Nikken Seil bought in 2000 for $500,000 - is not on the market, but it is understood it will be sold as the company withdraws from North Otago.
Nikken Seil arrived in North Otago in 2000 when its principal shareholder, Dr Hirotomo Ochi, bought Teschemakers and started a $3.5 million refurbishment to turn it into an international centre for health sciences.
In 2001, he bought the land opposite the Oamaru Racecourse on State Highway 1 just north of Oamaru for a $20 million business park with a plan to attract international companies, mainly with a food-processing background.
That was followed by the purchase of farmland, mainly around Teschemakers, which he wanted to use for organic food production, tying in with the Teschemakers centre and the business park.
His plans received a setback in June 2003 when fire caused major damage to Teschemakers partway through its refurbishment.
The redevelopment continued, but Dr Ochi died in October 2005, and all the projects were put on hold until Nikken Seil decided what to do with them.
Nikken Seil's North Otago representative, Katashi Kai, could not be contacted yesterday.
