Seasonal patterns of nitrogen, phosphorus, potassium, calcium and magnesium in the leaves of the massachusetts cranberry

Abstract
Leaf samples from cranberry plants in Wareham, Massachusetts were collected during the 1980–82 growing seasons and analysed for N, P, K, Ca and Mg. The seasonal patterns which emerged allowed the proposal of normal ranges for the elements and optimum times for sampling. The foliar nutrient levels obtained were compared to those for cranberries grown in other areas as well as to those for crops which are grown under similar conditions.