Pyrimethanil (Scala)

Scala is an anilinopyrimidine fungicide that inhibits or interferes with the secretion of enzymes necessary for infection in several plant-pathogenic fungal species. Because resistance can develop, the use of this product should conform to resistance management strategies established for the crop. When applying Scala alone, do not make more than two consecutive applications without alternating with a fungicide from a different resistance management group. Scala cannot be used on cherries.

Stone fruit: On apricots, nectarines, peaches, and plums, Scala can be used for brown rot blossom blight, shothole, and gray mold. Apply when bud tissue is susceptible to infection. If conditions continue to be favorable for disease development, apply at full bloom or at petal fall. Preharvest applications should be made on 7-day intervals or longer. Apply 9 to 18 fluid ounces per acre, but do not make more than three applications of Scala alone or more than 54 fluid ounces per acre and within 2 days of fruit harvest.

Pome fruit: On apple and pear, Scala can be used for inhibiting scab. Begin applications at green tip or as soon as conditions become favorable for disease development. Apply 7 to 10 fluid ounces of Scala alone or 5 fluid ounces when using in tank mixes. Do not apply more than 40 fluid ounces of Scala per crop and do not apply within 72 days of harvest.