Nigel Cattlin / Sheath blight (Thanatephorus cucumeris) infection on Rice (Oryza sativa) plants, Philippines.

Nigel Cattlin / Sheath blight (Rhizoctonia solani) bleached lesions on leaves of diseased flattened Rice (Oryza sativa) crop, Luzon, Philippines

Nigel Cattlin / Sheath blight (Rhizoctonia solani) diseased bleached lesions on grains on a Rice (Oryza sativa) ear, Luzon, Philippines

Nigel Cattlin / Sheath blight (Rhizoctonia solani) disease bleached lesions on leaves and stems of Rice (Oryza sativa), Luzon, Philippines

Doug Wechsler / Beech blight aphids (Grylloprociphilus imbricator) colony covering a tree branch, with waxy excretions that protect them from predators, Crossways Preserve, Pennsylvania, USA. July.

Doug Wechsler / Beech blight aphid (Grylloprociphilus imbricator) on tree bark, showing waxy excretion that protects it from predators, Fulshaw Craeg Preserve, Pennsylvania, USA. August.

Nigel Cattlin / A culture of Rice blast fungus (Magnaporthe grisea) growing on a PDA nutrient agar plate.

Nigel Cattlin / Pythium blight / Grease spot (Pythium spp.) damage to Bluegrass ( Poa sp.) on lawn, USA.

Nigel Cattlin / Northern corn leaf blight (Setosphaeria turcica) severe fungal disease lesions on maize / corn crop, Thailand

Nigel Cattlin / Early blight (Alternaria solani) target spot / bullseye lesions pattern on a tomato fruit, Thailand

Nigel Cattlin / Early blight (Alternaria solani) target spot / bullseye lesions pattern on a tomato leaf, Thailand

Nigel Cattlin / Early blight (Alternaria solani) target spot / bullseye lesions pattern on a tomato leaf, Thailand