Citrus leaves curling and silvery twisted with tiny insects on new flush (nimbu)

Curled, twisted, silvery new leaves with tiny insects clustered on the tender flush usually mean a sucking pest, most often the citrus psylla, and sometimes aphids or citrus leaf miner causing the silvery winding trails. The psylla is doubly important because it spreads citrus greening, so it is worth managing well. The damage shows mostly on the new flush, so the key is to protect each flush as it emerges. Confirm which pest it is with a photo to your KVK, since leaf miner trails, aphid curling and psylla damage need slightly different handling. Cultural steps help: try to synchronise pruning so flushes come together and are easier to protect, remove water shoots, and keep trees healthy. KVK-recommended insecticides for psylla and aphids exist as typical actives such as imidacloprid or thiamethoxam, used in rotation, but follow the label, the pre-harvest interval, and resistance management, and watch residue and MRL limits on fruit. Yellow sticky traps help monitor. Encourage natural enemies by avoiding unnecessary broad sprays. Get the pest identified before spraying so the timing matches the flush.