In toddlers and older children with faltering growth, fruit juice should be limited to 1 small cup per day. Fruit juice can contribute to poor growth by diminishing a child's appetite, and lead to reduced consumption of more nutrient dense foods1.
Royal Childrens Hospital Melbourne. (2013). Why no sweet drinks for children. Retrieved 11th April 2016 from http://www.rch.org.au/uploadedfiles/main/content/nutrition/2013NutritionSweetdrinksDEECD.pdf