Abstract
The objective of this investigation was to study the effect of cutting position, rooting medium and hormone on the rooting of bush tea stem cuttings. The experiment was carried out in four consecutive seasons from 2002 to 2003 at the Hatfield Experimental Farm of the University of Pretoria, Pretoria, South Africa. The parameters recorded were cutting position (apical vs. basal), rooting medium (composted pine bark vs. sand), rooting hormone (with Seradix® No. 2 vs. no hormone), sampling days (15, 20, 25 and 30 days) and season (summer, autumn, winter and spring). Cutting position had a highly significant effect (P<0.001) on rooting and transplanting survival of bush tea with better rooting percentage, root length, root number and survival percentage from apical than from basal cuttings. Composted pine bark improved the number of roots developed but had no effect on rooting percentage, survival percentage nor on root length of the cuttings. The application of rooting hormone (Seradix® No. 2) during the propagation period increased root number and further increased shoot length after transplanting but not rooting percentage, survival percentage or root length. Season also showed highly significant differences (P<0.001) on rooting percentage, root number and root length. Rooting of cuttings was improved when propagated in autumn (longer roots) and spring (number of roots) but not in summer or winter. The results of this study suggest that vegetative propagation of bush tea could be achieved by apical cuttings propagated in composted pine bark with Seradix® No. 2 hormone in spring for 30 days since root number was the most important factor for the successful establishment of the cuttings.
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Claims 10
Claim · model-written summary
Apical cuttings had better rooting percentage, root length, root number and survival than basal cuttings.
Verbatim
e0“Cutting position had a highly significant effect (P<0.001) on rooting and transplanting survival of bush tea with better rooting percentage, root length, root number and survival percentage from apical than from basal cuttings.”
Claim · model-written summary
Composted pine bark improved root number.
Not reportedComparator
Verbatim
e0“Composted pine bark improved the number of roots developed”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
Composted pine bark had no effect on rooting, survival or root length.
- Taxon
- bush teat0
- Treatment
- Composted pine barke0
- Outcome
- rooting percentage, survival percentage nor on root lengthe0
- Direction
- no effecte0
Not reportedComparator
Verbatim
e0“Composted pine bark improved the number of roots developed but had no effect on rooting percentage, survival percentage nor on root length of the cuttings.”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
Seradix rooting hormone increased root number.
Not reportedComparator
Verbatim
e0“The application of rooting hormone (Seradix® No. 2) during the propagation period increased root number”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
Seradix rooting hormone increased post-transplant shoot length.
- Taxon
- bush teat0
- Treatment
- rooting hormone (Seradix® No. 2)t1
- Outcome
- shoot lengthe0
- Direction
- increasede0
- Qualifier
- after transplantinge0
Not reportedComparator
Verbatim
e0“further increased shoot length after transplanting”
t0“bush tea (Athrixia phylicoides DC.)”
t1“rooting hormone (Seradix® No. 2)”
Claim · model-written summary
Rooting hormone did not affect rooting percentage, survival or root length.
- Taxon
- bush teat0
- Treatment
- rooting hormone (Seradix® No. 2)t1
- Outcome
- rooting percentage, survival percentage or root lengthe0
- Direction
- note0
Not reportedComparator
Verbatim
e0“but not rooting percentage, survival percentage or root length.”
t0“bush tea (Athrixia phylicoides DC.)”
t1“rooting hormone (Seradix® No. 2)”
Claim · model-written summary
Season differed significantly for rooting percentage, root number and root length.
Not reportedDirection
Verbatim
e0“Season also showed highly significant differences (P<0.001) on rooting percentage, root number and root length.”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
Autumn propagation produced longer roots.
Verbatim
e0“Rooting of cuttings was improved when propagated in autumn (longer roots) and spring (number of roots) but not in summer or winter.”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
Spring propagation improved root number.
Verbatim
e0“Rooting of cuttings was improved when propagated in autumn (longer roots) and spring (number of roots) but not in summer or winter.”
t0“bush tea (Athrixia phylicoides DC.)”
Claim · model-written summary
The authors recommend apical bush tea cuttings in pine bark with Seradix in spring for 30 days.
Verbatim
e0“vegetative propagation of bush tea could be achieved by apical cuttings propagated in composted pine bark with Seradix® No. 2 hormone in spring for 30 days”