XVI. BEDS AND BENCHES A.Ground beds –tall crops - tomatoes, cucumbers, roses –Cost; $ per sq. ft. 1.surface Native soil modified Difficult to sterilize

2.benches Materials –Treated wood –Concrete Construction –Slope 1"/100' –V shape bottom

B.Raised beds 1.cut flower 4' wide 2.pot plant 6' wide; may be 3' to 5' 2.5 to 3' high no sides

3.advantages Air circulation Ease of handling plants Moveable

4.construction a)wood –cypress –treated wood b)concrete –long lasting –not movable

c)transite –long lasting d)other –snow fence –expanded metal –hardware cloth

C.Ebb & flood –Description –Types floor bench D.Float Description & Construction E.Controlled Water Table (CWT) Description & Construction

F.Bench arrangement 1.factors to consider Efficiency –workers –moving plants –culture practices; shading, irrigation Wide center aisle

2. types of arrangement length of house space utilization eff. –stationary 66% –peninsular 80% –movable 90% G.Bench support