The Apple Festival is on today and tomorrow. If numbers of people visiting the garden is the measure, it's the biggest event of the year (and certainly one of the biggest within the entire university) – I do have to say that 13,000kg (28,000lbs) of apples is quite a sight. Anyway, you'll have to excuse me if I've been a bit brief recently and for possibly being abbreviated the next couple days.
The 'Jonagold' apple is a half-sibling to 'Elstar', as it also has 'Golden Delicious' as one parent, with 'Jonathan' as the other. 'Jonagold' was introduced by the New York State Agricultural Experiment Station, and later received an “Outstanding Fruit Culitvar Award” from the American Society for Horticulture Science.
Botany resource link: Plant Hormones goes into great detail into the chemistry and physiological effects of plant growth regulators.