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Effect of cultivar and rockwool as a root medium on yielding of cherry tomato

Józef Piróg*, Andrzej Komosa**

**Department of Vegetable Crops
**Agricultural University of Poznań
**D±browskiego 159, 60-594 Poznań, Poland
**Department of Horticultural Plant Nutrition
**Agricultural University of Poznań
**Zgorzelecka 4, 60-198 Poznań, Poland

In the years 2000 and 2001 research on cherry tomato grown on rockwool in the greenhouse was carried out. Eight cultivars: ‘Conchita F1’, ‘DRC 1021 F1’, ‘Evita F1’, ‘Favorita F1’, ‘Flavorino F1’, ‘Goldita F1’, and ‘Picolino F1’ from De Ruiter Seeds (Holland), and ‘Piko F1’ from SHR Krzeszowice (Poland) were studied. As growing substrates rockwool Agroban (Slovakia) and Flormin (Poland) were used. The aim of the research was to determine the size and quality of yield of the cherry tomato grown on rockwool. The results indicated the full usefulness of rockwool as a substrate for cherry tomato cultivation. The 1st grade yields of the studied cultivars differed, but the kind of rockwool did not affect the yield differentiation. With respect to yielding and yield growth rate the highest note was given to ‘DRC-1021 F1’. The highest 1st grade yield (16.50 kg m-2) was also given by ‘DRC-1021 F1’, while the lowest by ‘Piko F1’ (8.8 kg m-2). The greatest number of clusters was noted on a plant of ‘Goldita F1’ (15.18 kg) and the smallest on ‘Flavorino F1’ (12.4 kg). ‘Piko F1’ had the greatest number of fruits in a cluster (21.5 kg) but these fruits were the lightest.

Piróg J., Komosa A., 2002. Effect of cultivar and rockwool as a root medium on yielding of cherry tomato. Folia Horticulturae 14/1: 87-94.