THE EFFECT OF SUBSTRATE TYPE ON THE QUALITY OF WATERMELON SEEDLINGS
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Watermelon is one of the leading vegetable crops grown in R. Macedonia. It is regularly produced by seedlings and very seldom by seed. The objective of the research was to determine the influence of growing substrate type on the quality of watermelon seedlings, variety Fantasy F1. Three different substrates were tested as follows: homemade substrate mixture of organic cattle manure and soil in ratio 1:1 (Reference treatment), commercial Brill substrate with Trichoderma (Treatment 1) and mixture of homemade substrate and Brill substrate with Trichoderma in ratio 1:1 (Treatment 2). According to research methodology several biometrical parameters were measured in order to determine quality of the watermelon seedlings as follows: seedling length (cm), mass of the aerial seedling part (g), stem thickness (mm), leaves number, leaves mass (g), root length (cm) and root mass (g). The seedlings were measured 18 days after sprouting. The results showed that seedlings grown in Brill substrate with Trichoderma had the best parameters for mass of the aerial seedling part (5.10cm), stem thickness (3.30mm), leaves number (6.27), leaves mass (9.04g), root length (17.17cm) and root length (13.95g). Only seedlings from treatment 2 were longer (16.23cm) in comparison to the Reference treatment (14.6cm) and Treatment 1 (14.73cm).
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