Low phosphor concentrations in fruits produce "low temperature breakdown", shown by brown and soft areas within flesh in store.
Only at progressed stage damage is visible from the outside. Fruits are squashy and show brown areas on surface.
Phosphor deficiency
Low phosphor concentrations in fruits produce "low temperature breakdown", shown by brown and soft areas within flesh in store.
At progressed stage damage is visible from the outside. Fruits are brown and squashy.
Phosphorus deficiency
Apple: 5-8 applications of 10 l/ha at 10-14 day intervals commencing at petal fall. Water rate: 500 l/ha. For red coloration: Seniphos at 10 l/ha in 1,000 litres of water has been shown to enhance red colouration. 1 or 2 applications (7 days apart) should be made once the fruit has started to change colour, normally 2 to 3 weeks before harvest.