For the second week running last night, a plan to build an 18-hole golf course along the Edgartown Great Pond was subjected to a tough public grilling for more than three and a half hours on everything from pesticide use to membership policies.

A key subcommittee of the Martha’s Vineyard Commission began deliberating this week on a proposal for a private 18-hole golf club on the Edgartown Great Pond, but not before a brittle debate that saw one member of the MVC launch a harsh personal attack on a fellow commissioner.

The commission land use planning committee (LUPC) is expected to develop recommendations on the Meeting House Golf Club project in the next couple of weeks.

The executive director of the Martha’s Vineyard Commission said this week that the regional land use commission will ask the developers for the Meeting House Golf Club project to agree to a three-week extension for the review process.

“The setting and the site are of such a complicated nature that the time frame does not allow us to adjust,” said MVC executive director Charles Clifford. “It is basically to give us a little more time to digest exactly what it is that the applicant has submitted,” he added.

The developers who want to build a golf course along the Edgartown Great Pond jacked up the pressure this week in an attempt to gain favorable votes from members of the Martha’s Vineyard Commission.

Opponents of the golf course project also are waging a lobbying campaign, including a series of paid advertisements, but the campaign by the developers is now clearly accompanied by high-pressure tactics more commonly seen in Boston than on the Cape and Islands.

A sharply divided subcommittee of the Martha’s Vineyard Commission completed an evaluation of a proposal for a golf club along the Edgartown Great Pond with little in the way of accord this week, but decided to wait one more week before voting on a recommendation on the project.

“This committee is not going to come up with a clear recommendation,” declared commission member Linda Sibley.

“The committee is going to come out with two reports,” concluded commission member Jennie Greene.

High-ranking state officials associated with the office of Gov. Paul Cellucci put heavy pressure on members of the Martha’s Vineyard Commission in an unabashed attempt to win votes in favor of the Meetinghouse Golf Club project in Edgartown, the Gazette has learned.

The commission rejected the golf club project by a one-vote margin three months ago.

A longtime member of the commission who has been a governor’s appointed member for 20 years admitted this week that she was pressured by a high-ranking state official to vote in favor of the Meetinghouse Golf project.

Ending months of debate, untold numbers of hours of public testimony and weeks of bruising deliberations, the Martha’s Vineyard Commission voted 7 to 6 last night to deny a proposal for a private 18-hole golf club on some 200 acres of land along the Edgartown Great Pond.

The developers who recently lost their bid to build a private golf club on some 200 acres of land along the Edgartown Great Pond intend to file a new plan and try again.

“We are neither dead nor finished,” declared a letter sent to the founding members of the Meeting House Golf Club one day after the plan was voted down by the Martha’s Vineyard Commission.

The letter was sent by mail and by fax to 30 seasonal residents of the Vineyard who advanced some $2 million in start-up money for the failed golf course project.

Developers at a hearing last night described the Meeting House Golf Club project as a blessing for the environment. The project would remove nitrogen from the groundwater, they said, improve the salinity of the Edgartown Great Pond and protect the rare plant known as gypsywort.

Some members of the public questioned those claims. And two opponents of the project hinted that scientific experts will appear, when the hearing continues, to offer different ideas about the environmental impacts of the golf resort proposed by Rosario Lattuca.

Officials from the YMCA presented their application to build a 39,000-foot addition, adding an indoor basketball court, exercise studios, indoor track and a golf simulator to the existing facility.