The effect of oxygen fumigation of sawdust medium on the yield and yield-components of greenhouse cucumbers

Greenhouse cucumbers were planted in sawdust-filled plastic bags which were fumigated with oxygen at each feeding. Treated plants produced 20% more cucumbers and 18% more fresh and dry weight than controls, but mean fruit length was 1.0 cm lower in treated plants. Fruit dry weight yield of treated plants did not depend on any particular yield component, while 58.6% of the yield variability of control plants was accounted for by the number of cucumbers produced per unit leaf area.