A gypsy moth spraying operation will be conducted in April and May focusing on the forested areas in the Aberdeen and Edgewood areas.
Aberdeen Proving Ground officials said its Directorate of Engineeringand Housing will conduct the spraying program.
The pesticide bacillus thuringiensis will be used to kill the insect, which defoliates and kills forest and shade trees.
The Army last year sprayed 9,000 acres on the proving ground to control the gypsy moths. Officials estimate that the spraying protected 90 percent of the foliage and reduced the moth population by 80 percent.
Most areas sprayed last year will not be sprayed again this spring, administrators said.
However, it is estimated the moths have infested another 10,000 acres at the proving ground since last year.
APG officials said studies on the bacillus thuringiensis by the EnvironmentalProtection Agency found the pesticide does not harm people or the environment.