Fræðaþing landbúnaðarins - feb. 2010, Síða 399

VEGGSPJÖLd | 399
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Yield of cucumbers was divided into 1st and 2nd class fruits. 7% of the 1st and 0% of
the 2nd cropping of the cucumbers were 2nd class fruits, independent of the fertilizer.
In both croppings the 1st class yield level of cucumbers was also unaffected by
fertilizers and ranged about 1214 kg/m2 (Fig. 1). However, an application of fishmeal
and seaweed  mixture resulted in a somewhat higher yield compared to Nugro, but
the differences were statistically not significant. It seems that this difference increased
with longer growing period, suggesting that both fertilizers are mineralizing equally
well, but fishmeal and seaweed  mixture may have a longer lasting N mineralization.
Also, the lower N content of the later used Nugro 527 may be a reason for the
divergence of the yield (Stadler et al., 2006). However, for better evaluation, analysis
from the soil samples for nitrateN, taken on regular intervals, as well as the analysis
of the fertilizer N content, is needed to be able to verify assumptions. In addition, it
seems that yield increased with higher solar irradiation (excluding June, which was
affected with much pest), which would also coincide with the higher cucumber yield
Gunnlaugsson & Guðfinnsson (2004) obtained.
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 Cumulative marketable yield (1st class) of cucumbers (a: 1st cropping, b: 2nd
cropping) fertilized with fishmeal and seaweed  mixture or Nugro.
Letters indicate significant differences at the end of the harvest period (HSD, p≤0.05).

The choice of fertilizer was not observed to affect the number of harvested fruits.
Average fruit weight of cucumbers was about 370 / 400 g (1st / 2nd cropping) and
independent of fertilizer. Fruits were ripe in about 16 / 13 days (1st / 2nd cropping)
independent on the fertilizer, but influenced by the time of cropping. It seems that
winter grown cucumbers resulted in a delayed harvest, highlighting, on the one hand,
the importance of supplemental lighting and, on the other hand, the impact of solar
irradiation.
Yield of sweet pepper was divided into 1st and 2nd class fruits as well as unmarketable
fruits. About 10 % of the fruits were 2nd class, but close to 0 % were unmarketable. 1st
class fruits were about 10 kg/m2 red and 2 kg/m2 green (Fig. 2).
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 Cumulative marketable yield (1st class) of sweet pepper.
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