GROWTH AND FLOWERING IN POT PLANTS SOAKED WITH PLANT GROWTH REGULATOR SOLUTIONS IN EBB AND FLOOD BENCHES
In two experiments each with 2 cultivars of Kalanchoe blossfeldiana, the solutions with PGRs were supplied to the benches with ebb and flood irrigation. After 20 minutes of absorption into the substrate the residues were removed from the benches.
All the methods of application resulted in uniform retardation of the growth. Supply of ancymidol, paclobutrazol and uniconazole to the benches reduce the requirement of PGRs several times compared with spraying.
Analyses for ancymidol residues in the nutrient solution showed less residues after the supply to the benches than after a foliar spray.
The mentioned methods of application may be alternatives to multiple sprays with chlormequat and daminozide, or when foliar sprays have no effect.