This is another macadamia scouting course, shifting from insect and pests to diseases and abiotic stress. It covers flower and inflorescence diseases (dry flower disease, white mould, green mould), husk rot and branch dieback, fungal pathogens affecting trunks and roots (Roselinia, Phytophthora), viral symptoms, and non-disease stress factors like cold damage, drought, and zebra (bark) damage — giving growers a visual reference for diagnosing what's affecting tree and nut health beyond insect pests.
