SOMSTARTM -SL is a biological insecticide based on Polyhedral Inclusion Bodies (PIB) of Nuclear Polyhedrosis Virus (NPV) of Spodoptera litura with a PIB count of 1*10^9 PIB /ml. It infects and kills Spodoptera litura
SOMSTARTM -SL 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 - SL 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 SOMSTAR TM -SL @ 1ml / L of water The spray volume depends upon the crop canopy. Addition of blue dye and skimmed milk powder enhances the bioefficacy of production.
SOMSTARTM -SL 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 -SL is stable for a period of 12 months from the date of manufacturing.