What are the environmental factors affecting tea production?
What are the factors affecting the production of tea?
Environments: Soils and climate are two major factors affecting the quality. High elevations are considered to be the most favourable for production of quality tea.
Cultural practices: 
These, including tillage, weeding, fertility management, irrigation, plant protection and harvesting management may affect the quality though their effect on the yield may be more important. Among the management practices affecting the quality, leaf age and season of harvesting are the most significant.
 Processing technique: The processing technique of partially fermented tea involves a series of complicated operations (withering, shaking, panning, rolling, and drying) which, indeed, can be regarded as an art. Slight changes in manipulation of every step can affect the final quality including appearance, tea liquor colour, aroma and taste. It is not surprising to find that the qualities of made teas from the same batch of fresh leaves may vary greatly between individual processors.