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Providing evidence to improve practice

Individual study: Hawthorn berry yield reduced when hedge management removes fruit-bearing wood

Published source details

Sparks T.H., Robinson K.A. & Downing S.L. (2000) Hedgerow management and the yield of hawthorn Crataegus monogyna berries. Aspects of Applied Biology, 58, 421-424

This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Manage hedgerows to benefit wildlife (includes no spray, gap-filling and laying) Farmland Conservation

A replicated study of hedgerows in Cambridgeshire and Warwickshire, England (Sparks, Robinson & Downing 2000) (same site as (Sparks & Martin 1999)) found that hawthorn Crataegus monogyna berry yield was significantly reduced when management involved removing fruit-bearing wood.  Yield was significantly higher in sections that had been laid (282 g/2.5 m²) or uncut (219-421) than those that had been cut (4-10), coppiced (3-26) pollarded (70) or grubbed out (0). Yield differences were due to greater numbers of berries rather than increased berry size. At Monks Wood, the dry matter content was significantly higher in uncut sections; this was not the case at Drayton. At Drayton there were five randomized replicate plots (12 m long) of the following five treatments: unfenced or fenced control cut annually; fenced uncut; coppiced; grubbed out and replanted with blackthorn. At Monks Wood, there were two randomized trials each of 10-12 (20 m long) plots that received 3-5 replicates of three (uncut, coppiced or laid) or two (uncut or pollarded to 1.5 m) treatments. Berries were harvested within each plot from five 50 × 50 cm quadrats on the side of hedges, 1 m above ground.