SOMSTARTM -Ha is a biological insecticide based on Polyhedral Inclusion Bodies (PIB) of Nuclear Polyhedrosis Virus (NPV) of Helicoverpa armigera with a PIB count of 1X10^9/ml that infects and kills Helicoverpa armigera. SOMSTAR TM -Ha is registered by Indian Pesticides Regulatory Authority - Central Insecticides Board, Govt of India. SOMSTAR TM-Ha is approved for use in Organic agriculture..
Mode of Action
Ingestion : The Occlusion bodies are ingested by insect larvae. In the highly alkaline pH of the midgut, the occlusion body protein dissolves and is further degraded by host’s alkaline proteases.
Virus reproduction : The virus strain is protected in a polygonal structured capsid which enables the virus to infect host cells easily and aids in reproduction of the virus. When the capsid is broken down inside the host, virus strains are released and begin reproduction. The virus particles are released from polyhedra and subsequently attach to the peritrophic membrane lining the midgut. The lipoprotein membrane surrounding the virus fuses with plasma membrane of the gut wall cells and liberates nucleocapsids into the cytoplasm. The nucleotide transport virus DNA into the nucleus of the cell and virus gene expression begins. The virus multiplies rapidly and eventually fills the body of the host with virus particles.
Infection : The host will become visibly swollen with fluid containing the virus and will eventually die - turning black with decay. A pale whitish fluid is released from the insect’s body within 2-5 days of application of SOMSTARTM -Ha at young larval stages. The infection of NPV is sometimes carried inside the infected pupae and adults. The caterpillars emerging out of the eggs layed by such adults also carry the Poly Inclusion Bodies of NPV.
Method of Application
Foliar application : Spray SOMSTARTM -Ha @ 1ml / L of water
The spray volume depends upon the crop canopy.
Addition of blue dye and skim milk powder will enhance bio efficacy of the product.
SOMSTARTM -Ha is suitable for application on Cotton , Chilly, Tomato, Capsicum , Brinjal ( Egg plant) , Lady’s finger ( Okra ) , Cereals , Millets, Pulses, Oilseeds, Fibre Crops , Sugar Crops , Forage Crops , Plantation crops ,Vegetables, Fruits, Spices , Flowers , Medicinal crops , Aromatic Crops , Orchards and Ornamentals.
SOMSTARTM -Ha is stable for a period of 12 months from the date of manufacturing.