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Colecrop

8 pages tagged with this crop. All crops →

Mustard aphid: Lipaphis erysimi

Symptoms of damage: Both nymph and adults suck the sap from leaves, buds and pods Curling of infested leaves and at advanced stage plants may wither and die Plants remain stunted and sooty molds grow on the honeydew excreted by the insects Identification of pe

Symptoms of damage:

Yellowing Crinkling and cupping Distorted primordia Presence of white cast skin at the base of the plant Identification of pest: Nymphs and adults yellowish green with wavy white filament over the body Management: Install yellow sticky trap @12 no/ha to monito

Symptoms of damage:

Damage leaves and heads of cabbage and cauliflower Damage leaves of radish and beet root Identification of pest: Egg: Masses appear golden brown Larva: Young caterpillars are light green with black head or black spots. Well grown caterpillars are grey or dark

Cabbage butterfly: Pieris brassicae, P.rapae

Symptoms of damage: Defoliation Bores into the heads of cabbage Identification of pest: Larva: Velvetty bluish green in colour with black dots, Yellow dorsal and lateral stripes covered with white hairs. Pupa: chrysalis which takes place in leaves and stem Adu

Cabbage green semilooper: Trichoplusia ni

Symptoms of damage: Scrabbing of leaves initially and defoliation Identification of pest: Egg: Greenish-white, spherical and sculptured eggs laid singly on ventral surface of leaves Larva: Slender and green in colour with light wavy lines Adult: Stout, brown m

Leaf webber: Crocidolomia binotalis

Symptoms of damage: Young larva feeds gregariously on leaves Later webs together the leaves feed within Identification of pest: Egg: laid in groups under surface of leaves. Larva: green coloured Pupa: pupation takes place within the webbed up leaves Adult: For

Symptoms of damage:

The larva webs the leaves and bore into the stem, stalks or leaf veins Identification of pest: Egg: Yellow shiny eggs laid on the leaves Larva: Full grown larva are greyish-yellow with seven purplish brown longitudinal stripes Adult: Pale greyish brown moth wi

Symptoms of damage:

Young caterpillars cause small yellow mines on leaves Scrapping of epidermal leaf tissues producing typical whitish patches on leaves Full-grown larvae bite holes in the leaves and feeds on curd Identification of pest: Egg: Minute yellow coloured eggs laid sin