Abstract
Abstract A differential response of peanut (Arachis hypogaea L.) cultivars with varying seed sizes to Ca nutrition has been observed for many years. No satisfactory explanation of why different seed sizes respond differently to Ca nutrition was found. Fruit with a wide range of seed sizes were investigated. Fruit characteristics relating to seed size and Ca content expressed as a concentration and as the total amount in a fruit were compared. Ca content expressed as a concentration showed no relationship to seed size. Utilizing total Ca content in a peanut fruit and its volume, it was shown that large‐seeded fruit needed to transport Ca through a longer soil distance to satisfy the fruit's nutritional need than small‐seeded fruit did. This result does not address any Ca nutritional characteristics internal to a peanut fruit nor does it address any genetic nutritional variables.
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