Abstract:

This paper reviewed the symptoms of calcium deficiency, the effects of calcium nutrition on the growth and development, yield components, quality, morphological and anatomical structure and the mechanism of biochemistry and molecular biology of peanut crop. The combined effects of applying calcium and other fertilizers were summarized and several judging criteria of calcium deficiency of peanut were compared. The future research areas of calcium nutrition should focus on the followings: further demonstrated the internal mechanism of calcium deficiency that resulted in unfilled peanuts; improved diagnostic methods and judgment criteria of calcium deficiency; widely collected and screened peanut germplasm with tolerance to low calcium or high utilization of calcium and improved related cultivars; enhanced the precise, fast, efficient, sustained-releasing applying technology of calcium fertilizers.