SodininkyStĖ ir darŽininkyStĖ 28(4)

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SODININKYSTĖ IR DARŽININKYSTĖ. SCIENTIFIC ARTICLES. 2009. 28(4).
Influence of substrate volume on spring cucumber productivity
J. Jankauskienė, A. Brazaitytė
Summary
At the Lithuanian Institute of Horticulture in 2007–2009 cucumber hybrid ‘Mandy’
was grown in greenhouse covered with double polymeric film (sides covered with plastic).
The influence of peat substrate volume per plant on dry matter accumulation in leaves and
fruits, on early and total yield was investigated. Cucumber was grown in peat bags of different
volume: 15 liters (7.5 liters per plant), 20 liters (10 liter per plant), 25 liters (12.5 liters
per plant). During investigation there was measured plant height, established leaf assimilation
areas, dry matter content in cucumber leaves and fruits, photosynthetic pigments content
in cucumber leaves. The biggest leaf assimilation areas had cucumbers, which were
grown in peat bags of 25 liters. Substrate volume did not influenced dry matter content in
cucumber leaves and fruits, but influenced the earliness of investigated cucumber hybrid
and affected yield size. Cucumbers, which were grown in peat bags of 25 liters, produced
the biggest early and total yield. Average weight of fruits in all treatment was uniform.
Key words: cucumber, dry matter, yield, leaf assimilation area, photosynthesis pigments,
substrate volume.
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