Published in Scientific Papers. Series B, Horticulture, Vol. LXIII, Issue 1
Written by Kostadin KOSTADINOV, Stoyan FILIPOV, Velika KUNEVA, Mladen ALMALIEV, Tony SHOPOVA, Rady RADEV
The characteristics of seedlings to a great extent determine the quality and describe the success of production after planting. In an experiment carried out with winter-spring planting in an unheated glasshouse the influence of seedlings mixture on the main characteristics and the productivity of leaf lettuce variety Malvine.Four variants of nurseries grown with different seedlings mixtures have been set up as follow: 1.Peat -100% (control); 2.Peat 88% +Perlite 12%; 3.Peat 80% + Perlite 10% + Pine shavings Peat 79.85% + Perlite 10.52% + Pine shavings 10.53%. The aggregated results show that Peat 79.85% + Perlite 10.52% + Pine shavings 10.53% is with the highest vegetative growth and development, as exceeded the control for all indicators: 2% - 3% for the whole plant, 8% for the leaves, and 1% -2 % by diameter of the rosette. This study gives us reason to recommend as a hopeful for salad planting winter-spring season in unheated glasshouse mixture: Peat 79.85% + Perlite 10.52% + Pine shavings 10.53%.
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