Plant Health Care plc

Plant Health Care plc develops and supplies proprietary agricultural biological products designed to improve crop performance. Its patented offerings include Harpin alpha beta, a recombinant protein biostimulant that promotes crop yield and quality, and PHC279, a harpin-derived peptide that strengthens plants' natural defences against disease. The company's PREtec, or Plant Response Elicitor Technology, platform is inspired by naturally occurring harpin proteins and produces peptide-based crop inputs. Products are intended to help growers manage disease, drought and other environmental stresses, improve nutrient uptake, and increase resistance to soil pests. PREtec peptides break down rapidly in the environment and leave no harmful residues on crops or in the environment.

The group sells Harpin alpha beta and PHC279 under various brands through specialist distributors worldwide, while its Mexican business also distributes third-party biological products. Saori was launched in Brazil through Nutrien for soybean seed treatment, and Obrona was launched in the United States through Wilbur-Ellis for disease control in corn and specialty crops. PHC949 is a PREtec peptide developed to activate plant defences against nematode infection and abiotic stress. The company has transferred production methods to third-party manufacturers and scaled fermentation from pilot volumes to commercial 5,000-litre tanks. Plant Health Care plc became a wholly owned subsidiary of PI Industries Ltd of India in August 2024.