The study looked at how controlling the growth of apple tree shoots with plant growth regulators affected the occurrence of bitter pit in Honeycrisp apples. They used two different regulators, one to limit shoot growth and one to stimulate it. The researchers found that neither of these treatments had an impact on the bitter pit incidence in the apples. This means that using these regulators to control shoot growth may not be effective in preventing bitter pit in Honeycrisp apples.