Diagnosis of nutrient balances for fertilizer recommendations in cranberry crops

小红莓产业在魁北克有很大的经济影响，年收入达1亿美元，创造了1200个就业机会。在过去的40年里，随着工程、机械、虫害管理、灌溉和浆果改造等研发项目的开展，该行业发展迅速。随着浆果产量的增加，北美市场的竞争变得更加激烈，欧盟市场也开始开放。随着更严格的要求、更高的化肥成本和环境法规，该行业在营养管理和优质浆果的可持续生产方面面临着新的挑战。养分管理仍然基于专家知识和过去的一些田间试验，这些试验往往会产生中低产量的浆果。我们的目标是校准和验证营养诊断和建议，以适应魁北克蔓越莓高产水平的生产。我们将建立四个永久性试验点，假设其他养分供应充足(每个试验点36块)，N、P、K、镁、B和铜的添加将有所不同。我们将收集土壤和植物样本，并测量产量构成因素(#直立、#开花、#直立开花、浆果产量和质量-花青素、硬度、含糖量)。将在试验附近的田野中监测组织成分的时间变化。垃圾质量将使用FT-NIR定标进行分析。组织和土壤模型将通过使用全球和本地元数据以及新的营养平衡概念的荟萃分析来开发。将获得组织、土壤和产量调查数据，以便与组织和土壤养分模型进行比较。结果将被记录在MAPAQ元文件中，供整个小红莓社区使用。

The cranberry industry has large economic impact in Quebec with annual revenues of 100 M $ and 1200 jobs created. The industry developed rapidly over the past 40 yr following R&D projects in engineering, mechanics, pest management, irrigation and berry transformation. As berry production increased, the North American market became more competitive and the EU market opened. With more stringent requirements, higher fertilizer costs and environmental regulation, the industry is facing new challenges in nutrient management and the sustainable production of high-quality berries. Nutrient management is still based on expert knowledge and a handful of past field experiments that often returned low to medium berry yields. Our objective is to calibrate and validate nutrient diagnosis and recommendation tailored to the Quebec cranberry production at high yield level. We will establish four permanent sites where N, P, K, Mg, B and Cu additions will be varied, assuming that other nutrients are in adequate supply (36 plots per site). We will collect soil and plant samples and measure yield components (# uprights, # flowers, # flowering uprights, berry yield and quality - anthocyanin, firmness, sugar content). Time change in tissue composition will be monitored in fields near trials. Litter quality will be analyzed using FT-NIR calibration. Tissue and soil models will be developed from meta-analysis using global and local metadata and novel nutrient balance concepts. Tissue, soil and yield survey data will be acquired for comparison with tissue and soil nutrient models. Results will be recorded in the MAPAQ metafile for use by the whole cranberry community.