Anthony J. Rojko, 60, an economist and specialist in long-range world commodity projections at the Agriculture Department, died of leukemia Tuesday at George Washington University Hospital.

All the time of his death, he was leader of the commodities program area in the foreign demand and competition division of the Economics, Statistics and Cooperatives Service.

The commodities program area is responsible agricultural supply needs through statistical and economic analysis.

Mr. Rojko was born in Hadley, Mass. He graduated with a bachelor's degree in agricultural economics from the University of Massachusetts, earned a master's degree from the further work in economics at the University of Chicago.

He joined in the Agriculture Department on Boston in 1948 as an employe of the Bureau of Agricultural Economics and transferred to Washington a year later.

Before switching to foreign demand division in 1966, Mr. Rojko was head of the price research and methods section of the economic and statistical analysis division, Economic Research Service.

He was the principal author of "Alternative Futures for World Food in 1935," a four-volume work now being published. Other works included "The Demand and Price Structure for Dairy Products" (1957), "World Food Situation" (1976) "World Demand Prospects for Grain in 1980" (1971), and "World Food Situation and Prospects to 1985" (1974).

He is survived by his wife, Genevieve L., two daughters, Patricia and Catherine, and a son, Anthony, all of the home in McLean; three other daughters, Phyllis, of Williamsburg, Va., Jennifer, of Columbus, Ohio, and Constance Schmidt, of Lafayette, Ind., a brother, John and a sister, Amelia Kucinski, both of Hadley.