Effect of Thinning on Apple Quality
Apple quality includes apple weight, market grade, skin color
and soluble solids concentration (sweetness). These qualities can be
controlled by the spacing of fruitlets allowed to grow to maturity on
a given tree. Historically, thinning has been done by hand. Chemical
thinners are now being used which, when sprayed on the blossoms, kill
all but the king blossom in each cluster.
This experiment involved a comparison (using and comparing two
apple cultivars) of apple quality:
1) using different hand thinning distances between fruitlets
2) using apples from thinned and unthinned trees
3) using chemically thinned and hand thinned apples
4) using kitchen thinners
Honeycrisp Apple: A New Valley Variety
During controlled atmosphere storage, Honeycrisp apples develop
soft scald, a physiological disorder making the apples inedible.
This experiment involved two harvests of apples (one on the
harvest date and one a week after) from two different orchards. Visual
evaluation for soft scald was done on these samples at appropriate
monthly intervals for four months. Other test were done at removal
were for firmness, percent soluble solids and anthocyanin
concentration (red pigment on apple akin determined using methanol
extraction and a spectrophotometer).
Apples: Keeping Them Fresh
Stored two different varieties for four months in controlled
atmosphere (CA) storage and cold storage (0°C) to see which kept
apples best for market.
Quality measures included weight stability, firmness and
soluble solids concentration.
Apples: Sweet and Firm
Looked at the effect of harvest time on apple sweetness and
Found that sweetness continued to increase up to and after
harvest while firmness decreased as the apples ripen and after
Controlling Weight Loss in Apples During Storage
Apples were stored in different containers to determine the
effect on weight loss during storage.
Containers were baskets and bags that were open, closed or had
Effect of Temperature on Apple Juice Yield
Apples were stored in different places around the house with
various temperatures (attic, fridge, room temperature and cold room)
to determine the effect of storage temperature on the amount of apple
Much Juice Do Apples Have?
Compared the amount of juice that different varieties of apples
Bubble Bath Lasts the Longest