Milan Mitreski
University”St.Kliment Ohridski”-Bitola, Scientific Tobacco Institute-Prilep
Kicevski pat bb, 7500 Prilep; e-mail: kirilfiliposki@yahoo.com

ABSTRACT
Investigations on the green/dry mass ratio were carried out in 2009 and 2010 in the trialfield of Tobacco Institute-Prilep, with six varieties of the type Prilep: P-23, P 12-2/1, NS-72, 66-9/7,P-79-94 и Prilep Basma 82. The ratios for the two years ranged from 6.11:1 to 6.95:1, or 6,64:1 in average. Namely, the variety Prilep 66-9/7 had an average value of 6,11:1 and the Prilep Basma 82 variety achieved 6,58:1. The other varieties showed much higher average values compared to the check, in the following range: Prilep NS-72 - 6,77:1, Prilep P-79-94 - 6,86:1 and P 12-2/1 showed the highest average ratio - 6,95:1. The ratio between green and dry mass can be also expressed as plant productivity. In our investigations, the highest productivity among varieties was observed in P 66-9/7 and the lowest in Prilep P 12-2/1.

Key words: tobacco, Prilep, P-23, P-12-2/1, NS-72,P 66-9/7, P-79-94, Prilep Basma 82