Table 1.

Monitoring significance of target analytes in agricultural greenhouse environments.

Target Analyte	Monitoring Significance for Agricultural Greenhouse Environments	Target Range	Refs.
Ethylene	•Ripening hormone which effects the growth and development of plants	0.001–10 ppm	[3,18,19]
	•Influences the crop adaptability and performance under stress conditions
	•Prolongs the storage life of commercial produce
Carbon Dioxide	•Essential component of photosynthesis	200–1300 ppm	[6,9]
	•Increases plant productivity by improving growth and vigor
Hydrogen Sulfide	•Preservative that can delay ripening and senescence of crops during storage	1–80 ppm	[14]
	•Maintains colour and conserves intercellular energy
Ethanol	•Preservative that can delay ripening and senescence of crops during storage	500–2500 ppm	[4,15,16]
Water Vapor	•Influences leaf conductance and CO${}_2$ assimilation	40–100%	[5,9]