Search

Investigation was carried out at the LRCAF Institute of Horticulture in 2012. The aim of this experiment was to evaluate delayed sowing time influence on tomato yield and quality. The object of investigation was tomato variety -- 'Tamina'. It's a medium early, indeterminate type variety, growing up till 2 meters in height with mid-sized (75 g) fruits. Tomato seeds were sown at four different times (29-03-2012; 05-04-2012; 04-12-2012 and 19-04-2012) in heated greenhouse. On the 5th of June tomato seedlings were planted in natural soil in polyethylene non-heated greenhouse as a second culture. The experiment was conducted in three replications. Harvesting field area was 2.1 m². Dry matter and soluble solids content of tomato fruit were determined at the LRCAF Institute of Horticulture in Biochemistry and Technology Laboratory, applying non-destructive Near Infrared Spectroscopy (NIR). The results showed that the earliest sown tomatoes had the earliest yield, but time between germination and the first yield was 3 days longer in comparison with latest sowing tomatoes. Tomatoes sown on the 29th of March and on the 5th of April stood out with the highest total and marketable yields. Tomato sowing time delay gradually increased the amount of non-marketable yield and non-marketable amount of fruits. The earliest sown tomatoes had the largest fruits and sowing delay had negative effect on fruit size. Sowing time also influenced the amounts of dry soluble solids and soluble solids content in tomato fruits. [ABSTRACT FROM AUTHOR]

Investigation was carried out at the LRCAF Institute of Horticulture in 2007--2009. The aim of this experiment was to evaluate yield and biochemical parameters of cherry tomatoes (Lycopersicon esculentum Mill. var. Cerasiforme (Dunal) A. Gray). Tomatoes were grown according to integrated tomato growing technology approved by Institute of Horticulture. The object of investigation was six varieties ('Snow bewy', 'Vishenki yellow', 'Tangella orange', 'Orange sweet chewy', 'Huge tresies', 'Yellow centilor') and three selection numbers (995, 1112, 1144) of cherry tomatoes. It was established that the highest total (10.5 kg m-2 ) and marketable (9.8 kg m-2 ) yield had cherry tomato variety 'Orange sweet chewy'; also their fruits were rich in saccharose. Selection numbers 995 and 1144 were lexible and every year their yield varied in small range. Selection number 1144 fruits accumulated the highest amount of inverted (5.39 %) and total sugar (6.15 %); besides, their fruits had a lot of dry soluble solids (8.0 %) and dry matter (11.7 %). Selection number 995 tomatoes had the biggest amount of ascorbic acid (19.6 mg 100 g-1 ) and the lowest active acidity pH (4.18). [ABSTRACT FROM AUTHOR]