MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202541091886 A) filed by Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, on Sept. 25, 2025, for 'novel injectable emulsion matrix from methylobacterium against meloidogyne enterolobii in guava and its preparation thereof.'
Inventor(s) include Dr. R. Poorniammal; and Dr. S. Prabhu.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a novel biocompatible injectable emulsion formulation derived from Methylobacterium species, specifically developed for the effective management of Meloidogyne entero/obii (guava root-knot nematode) in guava (Psidium guajava L.). The formulation is an oil-inwater emulsion matrix enriched with heterocyclic bioactive metabolites, including Keto derivative, cyclopropanol derevative and methoxyflavone derivative, which are selectively nematicidal but safe to plants and non-toxic to humans, as confirmed by molecular docking and phytotoxicity studies. The formulation is designed for direct stem injection into the pith region of guava plants using a 5 ml livestock syringe, preferably administered during the post-pruning phase. Pot culture and multi-location field trials at Coimbatore, Periyakulam, and Tiruvannamalai demonstrated the formulation's efficacy in reducing nematode populations, root galling, and enhancing plant vigor, with the 2% concentration outperforming conventional chemical and integrated nematode management recommendations. The invention includes the method of preparation, composition of the emulsion matrix, application strategy, and efficacy results, establishing a novel, plant-compatible, and target-specific biocontrol solution for nematode management in guava."
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