sodininkystė ir daržininkystė 25(4)

SODININKYSTË IR DARÞININKYSTË. SCIENTIFIC ARTICLES. 2006. 25(3).
PHYSIOLOGICAL ASPECTS OF CUCUMBER
CROP DENSITY
J. Jankauskienë, A. Brazaitytë
Summary
In 2003-2005 two cucumber hybrids were grown in mineral rockwool in greenhouses
covered with double polymeric film (sides covered with plastics sheets) at
the Lithuanian Horticulture Institute and the influence of plant density on cucumber
hybrid photosynthesis system, yield and quality was investigated. There were grown
cucumber hybrids ‘Mandy’and ‘Componist’. Cucumbers were planted at different
densities: 2.0, 2.3, 2.6 plant/m 2 . During vegetation it was established the amount of
dry matter and pigments in plant leaves, the intensity of photosynthesis was measured.
The amount of pigments and dry matter, photosynthesis intensity in cucumber
leaves depends both on hybrid and plant density. Plant density influences the earliness
of the investigated cucumber hybrids, also affects the volume of yield. The
yield of cucumber hybrids grown at a density 2.6 plant/m 2 is bigger that this of
cucumber hybrids grown at a density 2.0 and 2.3 plant/m 2 . The average fruit mass in
all variants was the same.
Key words: cucumber, dry matter, hybrid, yield, photosynthesis intensity, pigments,
plant density.
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