Two successive experiments were conducted in plastic house under the natural
conditions during the both seasons of 1996-97 and 1997-96. Each experiment included
two application methods of uniconazole. as a foliar spray or as a soil drench, on a local
cultivar of Jacobinia camea, Nichols plants, using the rates of 0,60,90, 120.150 and 160
ppm. The experimental design was a split plot with 3 replicates, the main plots
represented the application methods, while the uniconazole rates resembled the sub
plots. The results can be summarized as follows:           1-      In both cases of application methods and comparing with the control, uniconazole
rates significantly retarded the plant height, the shoot dry weight, the flowering
time and the inflorescence dry weight and decreased the reducing, non-reducing
and total soluble sugars and starch contents in the leaves and roots, but
significantly increased the internode and shoot numbers and the leaf chlorophyll
"a" and "b" concentrations. The general effect of the chemical rates exhibited the
same trends.         2-     The internode length and the leaf area were evaluated with the foliar spray and
they were significantly decreased at the tested rates, compared with the control.         3-      Comparing with the control, the number of florets per inflorescence, the
inflorescence length, diameter and longevity were significantly increases at the
uniconazole rates applied as a foliar spray, while the opposite was noticed with the
soil drench. The general effect of uniconazole rates was Similar to the effect of the
soil drench.         4-    The soil drench was more effective than the foliar spray in depressing the plant
height. the shoot dry weight, the floret numbers, the inflorescence dimensions, life
and dry weight. the root contents of the reducing sugar and starch and the leaf and
root contents of the non-reducing and total soluble sugars. The foliar spray gave a
lower number of the internodes. a higher number of the shoots and earlier
flowering than the soil drench.         5-      All studied traits were markedly affected by each of the application methods, the
uniconazole rates and the interaction between them. except the leaf contents of
the chlorophyll" a" and" b", the reducing sugar and t he starch which were not
affected by the application methods.