Mr. Allah DadKhan gave a lecture to IPM trainees on lime diseases. He discussed several diseases that affect citrus trees including tristeza, citrus scab, citrus canker, anthracnose, citrus greening, Phytophthora gummosis, citrus chlorotic dwarf virus, and Pseudocercospora fruit and leaf spot. Citrus canker is a serious bacterial disease that reduces fruit growth and causes leaves to drop and fruit to fall prematurely, while citrus greening causes mottling and yellowing across leaf veins.