April 18, 1981

The Government acceded today to the demands of Polish farmers to create an independent union. Members of the union, Rural Solidarity, and Government representatives signed an agreement to permit the organization to come into being officially by May 10. The union will be open to the country's 3.5 million private farmers and will have the organizational structure of Solidarity, the union that now represents virtually all of Poland's industrial and office workers. The agreement removes a prolonged cause of tension after the Government's initial rejection of a union for farmers. The authorities had asserted that such a union would be a potential source of anarchy and antisocialist ferment.

Throughout the two long nights and the intervening day that he kept his vigil beside the gravel road leading to the Dutch Creek No. 1 coal mine, 51-year-old Vince Ayala held to the hope that his ''baby brother'' John had somehow eluded the deadly explosion that ripped through the mine last Wednesday. ''I'm not really a giver-upper,'' he said. ''The guy had a lot of gumption. The guy had a lot of quick moves. If there had been a hole he would have made it.''

A two-day strike by firefighters and other municipal employees that threw this city into crisis and allowed fires to race out of control ended tonight. The unions agreed to go back to work while their contract dispute was submitted to binding arbitration. Homer LaRue, a state mediator, said at 5:10 P.M., ''We expect full resumption of all normal city services as of right now.'' Shortly afterward, the more than 1,000 strikers - firemen, police superior officers, sanitation workers and other members of the Department of Public Works - began returning to their jobs. The agreement to return to work and to submit the dispute to binding arbitration must be ratified by the unions' membership. No date was set for the vote. Mayor Hails Accord Mayor Gerald E. Loehr, who, with other city officials, had been up for much of both nights, said he was pleased ''to have it resolved.'' It was ''regrettable that it happened,'' he said, ''but we're pleased there was no loss of life.''

As many as 15 persons were killed this afternoon when a twin-engine commuter airliner and a small private craft carrying sky divers collided in clear weather over northern Colorado, spreading debris over an area of several square miles. The number of fatalities made it the worst aviation accident in the United States this year. The two planes collided at an altitude of about 8,000 feet one and a half miles from the Fort Collins-Loveland airport, about 40 miles north of Denver. The parachutists' plane had taken off from that airport shortly before the accident.

The first high-level meetings between Indian Government officials and the Reagan Administration ended today in sharp disagreement over the Administration's plans to bolster Pakistan's armed forces. American and Indian officials said that Eric Gonsalves, the senior career official in India's Foreign Ministry, expressed New Delhi's deep concern to Secretary of State Alexander M. Haig Jr. and other department officials over the willingness of the Reagan Administraton to provide Pakistan with about $1 billion in military and economic aid over two years. India regards Pakistan as a threat to its security. In New Delhi, Prime Minister Margaret Thatcher of Britain told reporters that Pakistan had the right to buy arms. (Page 4.)