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Volume :32 Issue : 2 2005      Add To Cart                                                                    Download

Effects of root pruning at transplanting on root and shoot growth of Quercus robur (English oak) seedlings

Auther : HANI AL-ZALZALEH

Aridland Agriculture and Greenery Department, Kuwait Institute for Scientific Research, P.O.Box 24885, Safat 13109, Kuwait

ABSTRACT

Development of management strategies that potentially promote rapid post-transplant root growth is key to successful seedling establishment. A study was therefore conducted to test the effects of various root-pruning treatments on post-transplant root and shoot growth for one-year-old Quercus robur (English oak) seedlings transplanted directly into simulated landscape or into nursery containers. Root pruning did not influence plant height or new shoot dry weight, but height generally increased when main and lateral roots were severed 10 cm from the root collar. Branch number for all seedlings was increased when plants were grown in plastic bags compared to ground beds. Root pruning did not increase root length or root dry weight in the nursery containers. The increases in root length for plants where the taproot had been stripped of all other roots were considerably less than for other treatments in the field experiment. Generally, the root weight of container-grown seedlings was higher than that for those transplanted to field beds. When tap roots were not pruned, Root Growth Potential (RGP): Root ratios were lower.

 

Keywords: lateral root, nursery, root:shoot ratio, tap root.

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