Factors affecting propagation of some ornamental conifers by cutting
1982
Weerapan Sangsiripisal
Comparison of the effects of root-inducing substances: ethrel at 100,500 or 1,000 ppm, IBA at 2,000 ppm, NAA at 2,000 ppm, commercial wettable powder Rootone F and Seradix number 3 and water as an untreated treatment was investigated on terminal and subterminal cuttings of Juniperus virginiana, Cupressus sempervirens 'stricta' and Thuja orientalis at different seasons after the cuttings were incubated under intermittent mist at Bangkhen, Bangkok. The effect of upon the cultivars. The highest percentage of rooting, root length and number were observed when the terminal cuttings of Juniperus virginiana were treated with NAA at 2,000 ppm. The best result was obtained when terminal cuttings of Juniperus virginiana treated with ethrel at 500 ppm or with water formed roots 93% and increase in root length and number. The effects of growth substances on rooting of 3 ornamental conifer cuttings in various seasons were varied end
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