Symptom This virus has been reported from Argentina. It produces mosaic symptoms followed by necrosis and vein swelling severe necrosis and chlorosis on the leaves and curling of glumes are the additional symptoms. Seed treatment with Imidacloprid 2 g / kg of

Symptom Several kinds of symptoms have been described from India. Mosaic symptoms accompanied by ring spots or chlorotic spots which had a tendency to coalesce have been frequently reported. Another mosaic virus described as mosaic and chlorotic rings that wer

Symptom Initial symptom appears as brown irregular water soaked spots on the back of ripening head usually adjacent to flower stalk. Spots gradually enlarge and become soft and pulpy and get covered with superficial white mycelium which later becomes black. So

Symptom Initial symptoms of the disease are noticed 40 days after sowing. Sickly appearance of plants can be noticed from a distance and a row effect can be observed in heavily infested soil. Later the entire plant withers and dies. White cottony mycelium and

Symptom Charcoal rot is of economic importance particularly in the arid areas. The most common symptom of the disease, under field conditions is the sudden wilting of plants, usually after pollination. Early symptoms are not visible on infected plants, but the

Symptom The disease is a destructive one, widely distributed wherever the crop is grown. Severe reduction in seed and oil yield reported. The most affected components are number of seeds per head and the seed yield per plant. The disease also affects the quali

Symptom It is more prominent in the rabi season and in the kharif season the appearance is usually late. This disease in conjunction with Alternaria blight of leaves may cause yield loss up to 40 per cent. Uredo pustules appear first on the lower leaves. Uredo

Symptom The disease spreads rapidly through seeds. Symptoms of the disease are evident as seedling damping off, systemic infection, local foliar lesions and basal root or stem galls. First symptoms are yellowing of the first pair of true leaves. Sunflower plan

Parakeet: Psittacula krameri Symptoms of damage : The birds damage starts from the milky stage and continues till harvest These consumes on an average of 152 seeds/day Identification of the pest : It is slim, green parakeet with the typical short, heavy, deepl

Leaf hopper (jassids): Amrasca biguttula biguttula Symptoms of damage: The adult and nymphs suck the plant sap The infected leaves show pale yellow colouration In case of heavy infestation the leaves turn inwards The leaf edges may turn light pinkish brown I d

The larvae feed on the tender leaves, shoots, bracts and petals Later, the larvae spread in the field causing defoliation The larvae also feeds on the developing seeds in capitulum Identification of the pest : Egg: Egg masses appear golden brown Larva: Pale gr

Young larvae feed gregariously mostly on the under surface of the leaves Caterpillars feed on leaves and in severe infestation the whole crop is defoliated Drying up of infected leaves is the main symptom Identification of the pest: Egg : Laid in cluster on th

The larva feeds on the developing seeds and bore the head Fungal developed and head starts rotting The larva consumes leaf in early stage of growth and move towards the capitulum and tunnel the head Identification of the pest: Egg: Spherical in shape and cream