Diamondback moth

Diamondback moth (English)

Plutella xylostella(Botanical)

Description

Diamondback moth has been recorded everywhere where cabbage is grown and it is highly dispersive. The diamondback moth has four instars. Throughout their development, larvae remain quite small and active. If disturbed, they often wriggle violently, move backward, and spin down from the plant on a strand of silk. The adult is a small, slender, grayish-brown moth with pronounced antennae. It is about 6 mm long, and marked with a broad cream or light brown band along the back. The band is sometimes constricted to form one or more light-colored diamonds on the back, which is the basis for the common name of this insect.

Control

Rainfall has been identified as a major mortality factor for young larvae, so it is not surprising that crucifer crops with overhead sprinkle irrigation tend to have fewer Diamondback moth larvae than drip or furrow-irrigated crops. Best results were obtained with daily evening applications. Chemical control includes Mac-Ten, Indoxacarb 15 SC, Nemesis, Fipronil.

Control chemicals

Mac-Ten (Emmamectin Benzoate 50g/kg) - Classified green

Nemesis (Acetamiprid 64 gr/lt + Emamectin benzoate 48 gr/lt) - Classified green

Indoxacarb 15 SC (Indoxacarb 15%) - Classified green

Fipronil 20 SC (Fipronil 20) - Classified amber

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