The 3 entries in Laisha's encyclopedia that attack Grapefruit and pomelo, grouped by type. Each page covers identification, life cycle, the conditions that favour it, action thresholds and integrated management.

Growing Grapefruit and pomelo? The free Grapefruit and pomelo grow guide covers the crop from sowing to harvest.

Insect pests

• Asian citrus psyllidDiaphorina citriInsect · A small mottled-brown bug that feeds on the new shoots of citrus. On its own it does modest harm, but it…

Oomycete diseases (water moulds)

• Citrus gummosis (Phytophthora foot rot)Phytophthora citrophthora and Phytophthora nicotianaeOomycete disease · Gummosis is a rot of the bark at the base of citrus trees caused by soil-borne Phytophthora water moulds.…

Bacterial diseases

• Citrus greening (huanglongbing, HLB)'Candidatus Liberibacter asiaticus'Bacterial disease · Huanglongbing, or citrus greening, is the most destructive citrus disease in the world. A bacterium carried…