Cyproconazole Translocation in Coconut Palm Tree Using Vegetative Endotherapy: Evaluation by LC-MS/MS and Mathematical Modeling

Endotherapy is a potential eco-friendly alternative to conventional pesticide application techniques in coconut (Cocos nucifera Linn.) palms. Field trials applying cyproconazole by vegetative endotherapy using two different injection methods, pressurized and nonpressurized, were tested. Stem samples above the point collected 2 45 days after application, fruits up 120 application. Residue analyses on fruit stem of performed modified QuEChERS (an acronym for “quick, easy, cheap, effective, rugged, safe”) LC-MS/MS MS (liquid chromatography–tandem mass spectrometry). For m tall hybrid palms, residue analysis results revealed that method achieves faster translocation higher concentrations upper part than nonpressurized method, even when half volume. After both methods showed residue-free fruits, ensuring quality. Based these experimental results, mathematical models developed aid interpreting stem. The modeling was extrapolated taller prediction simulated leaf disease. fitted data, indicating performs better efficiency.