Citrus Gumming

gumming image 2Gum formation in the pockets on the trunk or branches of citrus trees is typically due to a Phytophthora spp. The wood beneath the blister shows a pink-orange colour and it can be exacerbated by freeze damage, high water tables and salt accumulation. Gumming can also be caused by lack of copper.

Gumming that occurs under new bark or on fruits could be as a result of copper deficiency.

Growers should check using tissue analysis and apply the appropriate micronutrient fertilizers to the leaf to ensure supplies of copper are not limiting growth.

Recommended Yara Fertilizers for Citrus

Citrus fertilizer programme

PROGRAMME 1 0.02 citrus crop program 1Elaborated by our specialists, Yara's nutrition programmes for citrus can help you to achieve excellent crop performance.