The current willow breeding programme has great chance to produce hybrids with high WUE however the production of a progeny population from high yielding hybrids that contrast widely in resistance to water stress is recommended. Water use (WU) of high yielding willow short rotation coppice hybrids is similar which indicates that the opportunity to reduce WU is limited and that productivity can be only improved by increasing WUE to produce above ground biomass and drought resistance. The results indicate that the best parents to produce such candidate are S. If water stress occurs before August the candidate is able to recover faster the initial physiological state and grow new leaves when re-watered. In food crops generally, only a small proportion of the total crop is used and even low levels of cosmetic damage, from whatever source, can reduce the useable yield significantly. The stomatal conductance decreases slowly and the leaf temperature is almost unaffected. OF SRC WILLOW Short rotation coppice willow differs from food crops in two major ways that have environmental and biodiversity implications. As water stress progresses, the leaf area decreases leaving little time for leaves to senesce and few yellow leaves remain on the stems. When grown under optimum condition, the large leaf area has high stomatal conductance and leaf temperature. The ideal candidate prioritises less biomass to its root system (root/shoot < 0.8) mainly in the top 0.2 m. After planting, the candidate does not grow rapidly but has an early exponential phase of stem elongation, after a year of growth it has few stems per stool ( 8) hairless leaves are characterised by small adaxial epidermal cells (AECS < 330µm2). Its cuttings do not develop calluses when stored in darkness at +4☌. The willow stools readily develop multiple shoots when coppiced and. However, its long-term effects on soil microbial communities are poorly characterized. Willow ( Salix spp.) is planted as rods or cuttings in spring using specialist equipment at a density of 15,000 per hectare. The effects of crop age, clone and soil type on the radiocaesium levels in the wood were assessed following sampling in 14 existing willow SRC fields, planted on radiocaesium-contaminated. The results depict the morpho-physiology of an ideal candidate that plant breeding could produce for drier area of UK, which are summarised below. Short rotation coppice (SRC) is increasingly being adopted for bioenergy production, pollution remediation and land restoration. The feasibility of willow short rotation coppice (SRC) for energy production as a revaluation tool for severely radiocaesium-contaminated land was studied. Within the genotype pool tested there was a wide range of responses. Experiments were conducted at Silsoe, Bedfordshire, in pots and field trials in 2002 and in lysimeters in 2003 to evaluate the range of water use efficiency (WUE) of 50 willows varieties (Salix sp.) and isolate morpho-physiological traits related to WUE and drought resistance. bioenergy), enhanced the overall value of this phytotechnology.This thesis reports on an investigation of drought resistance of willow SRC genotypes. The resulting high aboveground biomass yield, which can be used for other environmental applications ( e.g. We estimated that the willows demonstrated an overall efficiency level of 95% in reducing NH 4-N concentration in the leachate. For a two-year period, 5200 m 3 ha −1 of NH 4-N polluted groundwater were treated with very little environmental risk and high decontamination efficiency, mainly due to the high evapotranspiration rates and nutrient retention, and fast growth of the willow used.
Willow short rotation coppice trial#
Here we report the results of a field trial that used willow short rotation coppice stands to improve the quality of groundwater polluted mainly with ammonia nitrogen (NH 4-N), which is potentially life-threatening to many aquatic organisms. Ive only cut a strip about 5 trees deep the width of the. The battery chainsaw has been perfect for this.
You dont get a huge harvest but Im pleased with what Ive got from it. Cutting it a bit fine with the season but Ive just finished coppicing my hybrid willow that I planted about 7 years ago.
Willows are a highly versatile tree species that may have multiple environmental applications, including bioenergy, green structures, etc. Willow - Short Rotation Coppice - First Cuts.
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