"The company is in the process of obtaining additional information about the circumstances of the NYSE allegations and considering additional options, including filing an appeal to the committee of the board of directors of the NYSE challenging the commencement of delisting proceedings," Agria said.
Agria's American Depositary Shares last traded on the NYSE at US0.85c.
Agria indirectly holds 50.22 per cent PGG Wrightson (PGW) through Agria (Singapore).
The independent directors of PGW, Bruce Irvine, John Nichol and Ronald Seah have reformed as a Committee to consider and assess the implications, if any, that the subject matter of the announcement may have on PGW, PGW said in a separate statemen to the NZX.
"Mr Irvine said that the Committee would continue to monitor matters and would update the market if there are any material developments that may require consideration by PGW shareholders," the company said.
Last December Agria received a subpoena from the US Securities and Exchange Commission in connection with a "non-public" investigation. The commission's subpoena was focused on, among other things, Agria's historic and ongoing business operations in China, Agria said.
"The subpoena advised that the existence of the investigation should not be construed as an indication by the SEC or its staff that the company or any of its officers or directors had violated any of the federal securities laws," Agria said.
In April, PGG Wrightson said its chairman Guanglin "Alan" Lai had withdrawn his non-binding takeover offer for Agria.
In theory, a successful bid by Lai for Agria could have triggered a full takeover of PGG Wrightson by Agria under the New Zealand takeovers code.
PGG Wrightson, which has annual turnover of about $1.3 billion and which employs around 2200 staff, is big in grass seed and is well represented across the New Zealand agribusiness spectrum, from horticulture to real estate.
Agria describes itself as a global agricultural company involved in areas such as seeds and grain, crop protection, nutrients and merchandise and rural services.
In August, Christchurch-based PGG Wrightson reported that its net profit rose to $39.6 million in the year ended June 30, from $32.8m a year earlier. PGW's shares last traded on the NZX at 48c.