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Abstract
Florida currently has 26 state supported junior colleges and each campus is an autonomous unit which contributes to tremendous variability in administrative philosophy, curricula, and academic standards. All of these colleges have open door admission policies in that all graduates of high schools within the state are eligible for admission. Non-high school graduates may enter many community junior colleges to complete secondary educational programs.
Students wishing to transfer to the University of Florida as juniors must have completed an Associate of Arts (AA) Degree from a junior college with a grade point average (GPA) of 2.0 or better in academic courses based on a 4 point system of evaluation. They might enter without completing such a program provided they had been eligible to have entered the University of Florida as freshmen. The University of Florida requires 300 or higher score on the Florida 12th Grade Test, which usually limits eligibility to the top 2/5 ths of high school graduates in the state.
Abstract
Compared with manual pruning, use of fatty acid pruning compounds (Emgard, Off-Shoot-O and C-10) increased time to bloom for Rhodedendron obtusum Planch ‘Alaska’ and ‘Red Wing’ and decreased flower number on ‘Alaska’. Pruning compounds interacted with succinic acid-2,2-dimethylhydrazide (SADH) and (2-chloroethyl)triethylammonium chloride (chlormequat) as well as frequency of application in affecting date of bloom and number of flowers.
Abstract
‘Shasta’ chrysanthemum (Chrysanthemum morifolium Ramat) showed less SO2-induced leaf necrosis than ‘Hurricane’. The growth retardant a-cyclopropyl-a-(4-methoxy-phenyl)-5-pyrimidine methanol (ancymidol) at 0.16 and 0.48 mg ai/2.5 cm pot reduced SO2 damage on both cultivars. There was positive correlation between stomatal activity (water diffusion resistance) and degree of leaf necrosis from SO2.
Abstract
High N fertilization reduced percent infection by Glomus spp. (Glomus fasciculatus (Thaxter Gerd. & Trappe and G. mossae (Nich. and Gerd.) & Trappe) endomycorrhizae on inoculated Podocarpus macrophyllus Thunb., Pittosporum tobira Thunb., and Rhododendron simsii Planch. plants. Inoculation with Glomus spp. benefited growth of the 3 woody plant species even at high levels of fertilization (1250 N, 1250 K and 230 Mg kg/ha·yr−1) although leaf nutrients levels showed little difference from noninoculated plants.
Abstract
Adventitious root formation was stimulated with foliar application of indolebutyric acid (IBA) from 1000 to 1500 mg/liter for juvenile and 2000 to 3000 mg/liter for mature leaf bud cuttings of Ficus pumila L. IBA increased cambial activity, root initial formation, and primordia differentiation and elongation. IBA stimulated rooting when applied to juvenile cuttings at 3, 5, or 7 days after experiment initiation, but had no effect on mature cuttings when applied at day 15, the final treatment period. The interaction of IBA/gibberellic acid (GA3) did not affect early root development stages, but reduced root elongation and quality once primorida had differentiated. IBA/6-(benzylamino)-9-(2-tetrahydropyranyl)-9H-purine (PBA) inhibited rooting at early initiation stages.
Abstract
Soil drench of (2-chloroethyl)phosphonic acid (ethephon) at 500 or 1000 mg (active ingredient)/25-cm pot, caused prostrate growth habit and fruit set on Ficus benjamina L. grown in full sun or 47% shade. Leaves of sun plants generally had a mesophyll with multiple palisade layers, while shade plants had only limited regions of multiple cells. Ethephon treatments reduced intercellular spaces in palisade and spongy mesophyll cells, particularly near leaf margins. High shoot/root ratios, reduced leaf area, and heavy leaf drop during an interior phase occurred with ethephon treatment, especially plants grown under full sun.
Abstract
The effect of 0, 250, 1000, 3000, 5000, 7500, 10,000, and 15,000 ppm solution of NaCl:MgCl2 in a 10:1 ratio was determined on Chinese fan palms [Livistona chinensis (Jacq.) R Brown] grown in soil or nutrient solution. Plants grown in soil and drenched weekly with 10,000 ppm ceased growth within 2 months, while palms grown in nutrient solution exhibited a reduced growth rate with increasing salinity levels. Tissue analysis showed increased levels of Na and Mg in plant tissue with increased saline substrate levels, with highest Na and Mg tissue levels in fronds from container-grown palms.
Abstract
Three container-grown woody ornamentals (Viburnum suspension Lindl., Podocarpus macrophylla Thunb., Pittosporum tobira Thunb.) showed increased height, stem caliper, shoot and root fresh weight when inoculated with either Glomus fasiculatus (Thaxter) Gerd. & Trappe or G. mosseae (Nich. and Gerd.) Gerd. & Trappe endomycorrhizae.
Abstract
A series of 6 experiments was initiated October 9, 1964, to find root promoting or inhibiting factors in Feijoa sellowiana stem cuttings, to find a method of promoting rooting in difïicult-to-root plants, and to obtain information on indole metabolism in cuttings during the rooting process.
The ability to root in response to IAA or kinetin varied greatly between clones. Both kinetin and IAA promoted rooting of one clone but had no effect on 2 others.
Gas chromatographic analysis did not reveal any endogenous indole compounds in leafless stems. Indoles may have been present, but were masked by other compounds present in samples. IAA applied to cuttings was detected in samples taken immediately after treatment but not in samples taken 24 hr later. An unknown compound believed to be an inhibitor was found in both moderately easy and difficult-to-root clones but the content was 5 times higher in the latter. Effective levels of kinetin and IAA were found to be 0.10 and 70.00 mg/liter respectively when applied as an 8 hr basal soak.
Abstract
Light compensation point (LCP) was decreased 28.1% at 25% shade and 65% under 63% shade, as compared to full sun plants in chrysanthemum (chrysanthemum morifolium Ramat.). Shade level decreased plant growth characteristics measured and increased light intensity produced earlier flowering. Reductions in water and fertilizer levels did not alter LCP, but growth characteristics were affected. Total water used per pot varied with light levels.