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 BED HEIGHT AND NITROGEN FERTILIZER SOURCE

 E. E. Albregts
 Associate Professor (Horticulturist)


Objective: To determine effect of nitrogen fertilizer sources and bed height on
nitrogen availability during season and crop response. Also to determine the
extent of leaching of these fertilizer sources.

 Fertilizer was applied at top bed center. The same amount of N, P, and K was
applied to all treatments. Soil samples were taken in 6 inch increments to 24
inches before fertilizer was applied, after plants were started. These plots will
be sampled in February and at end of season at same depths to measure nitrogen
availability and leaching.


 KEY TO TREATMENTS FOR BED HEIGHT & N FERTILIZER SOURCE TRIAL, FIELD 7



Plot No. Fertilizer Source Bed Height

 1 Ammonium nitrate 12 inches
 2 Urea 12 inches
 3 Osmocote 12 inches
 4 Sludge 12 inches
 5 Uramite 12 inches
 6 1/2 sludge & 1/2 ammonium nitrate 12 inches
 7 No fertilizer 12 inches
 8 Ammonium nitrate 9 inches
 9 Urea 9 inches
 10 Osmocote 9 inches
 11 Sludge 9 inches
 12 Uramite 9 inches
 13 1/2 sludge & 1/2 ammonium nitrate 9 inches
 14 Ho fertilizer 9 inches
 15 Ammonium nitrate 6 inches
 16 Urea 6 inches
 17 Osmocote 6 inches
 18 Sludge 6 inches
 19 Uranite 6 inches
 20 1/2 sludge & 1/2 ammonium nitrate 6 inches
 21 No fertilizer 6 inches