Tariffs for farming implements and equipment were reduced, and farm incomes more than trebled during Whitlam's time in office. In 1973, a payment of emergency adjustment assistance was initiated to benefit canning-fruit growers and growers of pears and apples, while the Dairy Adjustment Act of 1974 provided generous assistance for financially unsound dairy farms. A number of environmental measures were also implemented by the Whitlam Government. In 1974, the Environment Protection (Impact of Proposals) Act was passed, which was the first piece of Commonwealth legislation to specifically address environmental issues, and set up procedures to review the environmental impact of development proposals which involved Commonwealth Government decisions. In 1973, the federal government awarded $100,000 in grants to environmental centres throughout Australia, the first action of its kind in Australia. In 1975, the Australian National Parks and Wildlife Conservation Act was passed, which allowed for the establishment of the Australian National Parks and Wildlife Service.