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To study influence of indole butyric acid (IBA) for enhancing root and shoot growth of dragon fruit stem cuttings and optimise the concentration of IBA, 0, 1000IBA, 0, , 2000, 4000, 6000 , 4000, 6000 and 8000 ppm were used to treat the stem cuttings planted in polybags as well as field experiment (raised bed planting).Polybags filled with sandy loam soil from ravine bed mixed with farm yard manure (FYM) and without FYM and raised beds were prepared in native murrum soil filled with FYM.Results revealed that the application of IBA @6000 ppm enhanced root and shoot growth of dragon fruit at 20 and 60 days after planting (DAP) in both the growing medium as well as in the field.Root length (34.50 ± 1.25 cm), numbers of roots (25.20 ± 1.52), fresh (10.81 ± 0.70 g) and dry weight of roots (5.16 ± 0.49 g)as well as shot growth represented by number of new shoots, shoot weigh on fresh and dry basis etc. were found greater with application of IBA @6000 ppm at 60 DAP; in soil with FYM medium.Similar trend was also observed in cuttings planted in polybags filled with soil without FYM and in the field experiment where application of IBA @6000 ppm found at par with 8000 ppm.IBA @ 6000ppm treatment also resulted in to sprouting of cuttings in 16-17 days compared to control where it took 19-20 days under the experiments.Therefore, IBA@6000 ppm is optimum for enhancement of adventitious root and shoots growth of dragon fruit stem cuttings.
Kakade et al. (Wed,) studied this question.
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