Early detection of plant stress and pest infestation is a key enabler of sustainable and precise crop management. Volatile organic compounds (VOCs) emitted by plants provide a valuable, non-invasive means of monitoring physiological changes, yet their implementation in real-time sensing remains limited by the high cost, complexity, and laboratory confinement of conventional analytical methods such as GC-MS (Gas Cromatography - Mass Spectrometry). This thesis investigates the potential of a low-cost MOS (Metal Oxide Semiconductor) gas sensor platform for detecting plant-emitted VOCs under controlled laboratory conditions. The system was tested across two main experiments designed to characterize the sensor response to biological volatile emissions.