Ap. Everaarts et Cp. Demoel, THE EFFECT OF NITROGEN AND THE METHOD OF APPLICATION ON THE YIELD OF CAULIFLOWER, Netherlands journal of agricultural science, 43(4), 1995, pp. 409-418
The effects of nitrogen on the yield of cauliflower were studied over
a period of three seasons at several locations. Different amounts of n
itrogen fertilizer were applied at planting broadcast or band placed.
Another treatment consisted of a split application. The number of plan
ts harvested was not consistently influenced by the amount of nitrogen
or the method of application. The quality of the product was not infl
uenced by the treatments either. Nitrogen application influenced the s
ize of the marketable curd. At high yield levels band placement had no
advantage with regard to increasing the yield or reducing the amount
of fertilizer applied. Split application did not increase the yield an
d sometimes even decreased the yield. The best correlation between yie
ld and nitrogen availability was found when the mineral nitrogen (Nmin
) in the soil layer 0-60 cm at planting was taken into account. The op
timum nitrogen fertilizer application was 224 - Nmin (0-60 cm) kg per
hectare.