Crop and input icons by game-icons.net (CC BY 3.0).
Crop photos via Wikimedia Commons:chilli by MTur Destinos (Public domain), tomato by Michal Klajban (CC BY-SA 4.0), oil-palm by Wagino 20100516 (CC BY-SA 3.0), citrus by Ivar Leidus (CC BY-SA 4.0), paddy by Basile Morin (CC BY-SA 4.0), banana by dronepicr (CC BY 2.0), potato by Ruslan V. Albitsky (CC BY-SA 3.0), pomegranate by Ivar Leidus (CC BY-SA 4.0), tea by Athulvis (CC BY-SA 4.0), turmeric by Simon A. Eugster (CC BY-SA 3.0), ginger by HaJunkiyada (CC BY-SA 4.0), maize by Bim24 (CC BY 4.0), cotton by Michael Bass-Deschenes (CC BY 2.0).
Symptom photos via Wikimedia Commons:damping off in chilli by Howard F. Schwartz, Colorado State University, Bugwood.org (CC BY 3.0 US), fruit rot by DannykhorskhiLXII (CC BY-SA 4.0), leaf curl by Philarium (CC BY-SA 3.0), thrips damage by Natalka Ukraine (baby-bear.org) (CC BY 4.0), wilting plants by Scot Nelson (CC0), early blight by Dwight Sipler (CC BY 2.0), bacterial wilt by Scot Nelson (CC0), blast disease by Donald Groth, LSU AgCenter, Bugwood.org (Public domain), brown plant hopper by portioid (CC BY 4.0), panama wilt by Scot Nelson (CC0), pink bollworm by Peggy Greb, USDA ARS, Bugwood.org (Public domain).