John Breker on Twitter: "Northwood, ND: Phosphorus deficiency in corn; striking and colorful example of slow growth and purpling of lower leaves. Don't forget starter phosphorus! #soilfertility #plantnutrition https://t.co/juZW8PDFrK" / Twitter
Nutrient Deficiency Guide For Crops - Cropnuts
Function and Deficiency symptoms of phosphorus in plants - Basic Agricultural Study
How to resolve the deficiency of phosphorus in plants? | Haifa Group