The influence of soil steaming on some properties of the soil and on the growth and heading of winter glasshouse lettuce. III. The influence of nitrogen form, manganese level and shading studied in sand culture experiments with trickle irrigation.

  • G. Jager
  • J. van der Boon
  • G.J.G Rauw


Heading of winter lettuce was impaired by poor light, and by NH4 and Mn accumulation resulting from soil steaming. The latter should be postponed until spring or done under relatively dry conditions, restricting the temperature and duration of treatment to a minimum. (Abstract retrieved from CAB Abstracts by CABI’s permission)