Six invaluable decision-support tools to help users develop cost-effective approaches to commonly occuring issues in reclaiming disturbed land...

Evidence shows that decision-making in these areas is often poorly informed and sometimes muddled by the opposing viewpoints of interested parties. roots problem-solving tools offer a stepwise approach and lead users logically through the decision making process. The accompanying narrative clearly identifies the information sources used in developing each tool, any assumptions made and limitations of the results which may apply. As well as resolving differences, these provide a valuable educational resource.

A number of ready reckoners help calculate the rates of amendments necessary to avoid nutrient deficiencies and growth disorders, taking fully into account the proposed vegetation type and physical and chemical properties of the recipient soil or soil-forming material. Application rates of different products are calibrated for ease of comparison and indicative costs offered. Opportunities for the recycling of waste materials as alternatives to premium products are highlighted.

The resultant reports can be used as the basis for applications to regulatory authorities for exemption from Waste Management Licensing, with loadings of potentially toxic elements determined and the theoretical increase in the soil concentration of these elements calculated and automatically compared to permitted limits.

Other ready reckoners help determine the most cost effective means of plant protection and identify British Standards. The former allows the user to compare the relative costs of protecting newly planted trees individually or by perimeter fencing. Based on the site investigation data and the risks presented by humans, wildlife and domesticated animals, the appropriate types of fence and tree shelters or guards are automatically identified A cost is assigned to each item, including adjustments for geographical variation in timber prices and labour rates within the UK. 

Having selected a plant protection item, the user is able to further refine the results by applying other relevant options e.g. use non tannalised timber, alter woodwork dimensions, with the cost automatically adjusted accordingly. To assist selection, recommendations are given on the suitability of individual products for each tree and shrub species, including their expected response to shelter microclimate.

Through this process, roots ready reckoners help eliminate the common errors and ensure that provision of plant protection is based on actual as opposed to perceived needs, the right organic amendments are chosen and application levels are correctly set.