Calcium Nitrate Doesn't Make Grannies Greener

摘要

GRANNY Smith growers know that calicum sprays are a good way to prevent bitter pit from ruining their crop. But when rumors spread that sprays of calcium nitrate would enhance the apple's greenness in addition to stopping bitter pit, Steve Drake was suspicious. Drake, a research horticulturist with USDA's Tree Fruit Research Laboratory in Wenatchee, WA, decided to investigate.