c7d03397_ening_Tips_and_Plants___How_to__Plant_Uses
[Plant Symptoms] Purplish leaves Yellow or streaked leaf margins Leaf tips die off Fruits late, poor or absent [Deficiency] Phosphorus [Sources] Manure, bonemeal, rock phosphates [Plant Uses] 
Genetic material, root growth, storage and use of energy
Organic Gardening Tips and Plants - How to