THE EFFECT OF CCC ON THE YIELD OF TULIP CV. POLKA
The studies show that CCC has a favourable effect on the yield of tulip cv. Polka. The optimal effect was obtained with 0.1% CCC applied to plants in the green bud stage (I). In this case an increase of the production of first choice bulbs by 56% in 1989/90 and by 14.2% in 1990/91 was found.