EFFECT OF INDOLE BUTYRIC ACID (GROWTH HORMONE) ON POSSIBILITY OF RAISING Dalbergia sissoo THROUGH BRANCH CUTTINGS

An experimental study was conducted at Students Experimental and Research Nursery: Department of Forestry, Range Management & Wildlife, University of Agriculture Faisalabad through which effect of growth hormone (IBA) on vegetative propagation of shisham (Dalbergia sissoo) was determined. The branch cuttings were prepared from one-year-old branches of resistant plus trees of shisham at UAF, having 15-20 years age. The length of the cuttings was kept uniform as 6’’ with a thickness of 10mm. The cuttings were collected during first week of September which were then treated in bleach with 1: 4 ratio for 1/2 hour to disinfect them from any pest pathogen infestation. The study comprised two levels of growth regulator concentration as IBA 100mg/l & IBA 200mg/l. The cuttings were planted followed by four replications as R1, R2, R3 and R4 comprising 25 cuttings/replication, planted in same no. of polythene bags (23cm x 10cm) making a total number of 300 cuttings under low polythene tunnel. The results showed that true to type shisham tube plants can be produced vegetatively through branch cuttings with the application of rooting hormones. The cuttings in comparison to different concentration levels of IBA, responded well to a conc. of IBA 200mg/l. Many experiments done by various scientists have showed promising results in regard to growth of these tube plants with more than 80% survival when were planted in the field.