Advances in Meteorology / 2013 / Article / Tab 1

Research Article

Effect of the Evaporative Cooling on the Human Thermal Comfort and Heat Stress in a Greenhouse under Arid Conditions

Table 1

Various types of greenhouse work and the corresponding highest permissible WBGT values.

Type of greenhouse work (met)Permissible WBGT (°C)

No work is recommended >32.5
Preparation of spinach, defoliation of strawberry, leaves swing, standing relaxed, and so forth0.7–1<32.5
Disbudding, training, pinching, planting, chemical spraying, and so forth1-2<30.5
Weeding, fruit thinning, fertilizing, standing poles, extending screens, and so forth2-3<29.0
Mowing, preparation of nursery beds, and so forth3-4<27.5
Soil mounding, row creation, removal of crop wastes, and so forth4-5<26.5
Digging with a spade, working with an axe, and so forth5–7<25

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