Nursery Techniques - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 21

Fig. 2.4 Plan and sectional view of a GLR of 50,000-l capacity
An OHR is a structure of considerable cost and complexity. Nevertheless, it
becomes an indispensable part of a nursery if labour costs are so high that pressure-
driven sprinklers must be installed for irrigation. The cost of an OHR can be brought
down by designing it for a lower capacity (Fig. 2.5 ) if availability of electric power