Please use this identifier to cite or link to this item:
|Document Type: ||Article|
|Title: ||Poplar (Populus spp) growth and crop yields in a silvoarable experiment at three
lowland sites in England|
|Authors: ||Burgess, Paul J.|
Incoll, L. D.
Corry, D. T.
Hart, B. J.
|Issue Date: ||2004|
|Citation: ||P. J. Burgess, L. D. Incoll, D. T. Corry, A. Beaton, & B. J. Hart, Poplar (Populus spp) growth and crop yields in a silvoarable experiment at three lowland sites in England, Agroforestry Systems, 63, 157-169|
|Abstract: ||In early 1992, a silvoarable experiment, comprising four poplar (Populus spp.)
hybrids (at a spacing of 10 m x 6.4 m) and four arable treatments, was
established at three contrasting lowland sites in England. By the end of 1998,
seven years after planting, the height of the poplar hybrid Beaupré (11.9 m) was
greater than those of the hybrids Gibecq, Robusta and Trichobel (8.9-9.8 m). The
trees at the most exposed site had the shortest height (9.2 m) and the greatest
diameter at breast height (173 mm). Tree growth was also affected by the arable
treatments. The height (9.5 m) and diameter (143 mm) of the trees bordered on
both sides by a continuous rotation of arable crops were 89% and 79%,
respectively, of those bordered on both sides by a regularly cultivated fallow.
This result could be explained by competition for water. Across the three sites,
in the presence of the trees the yield per unit cropped area, relative to that
in the control areas, was an average of 4% less in the first three years and an
average of 10% less between years four and six. However the specific responses
were dependent on the arable crop. The experiment also included an alternately-
cropped arable treatment, where the crop was alternated with a one-year bare
fallow. The benefits of a preceding fallow, rather than a cereal crop, for yield
were greatest for wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.)
and least for field beans (Vicia faba L.), peas (Pisum sativum L.) and mustard
(Brassica alba L.)|
|Appears in Collections:||Staff publications - Cranfield University at Silsoe|
Items in CERES are protected by copyright, with all rights reserved, unless otherwise indicated.