Pine Needle Scale Pheno Forecast, Contiguous United States, 2016 - Current Year

Pheno Forecast maps predict key life cycle stages in a range of species to improve conservation and management outcomes. For insect pest species, Pheno Forecasts are based on published growing degree day (GDD) thresholds for key points in species life cycles. These key points typically represent life cycle stages when management actions are most effective. These maps are updated daily and available 6 days in the future. We forecast crawler emergence in pine needle scale (Chionaspis pinifoliae) at 298-448F growing degree days (base 50F, start date: March 1, simple average GDD method). Forecasts are available for the current and prior year in the USA-NPN Visualization Tool (https://www.usanpn.org/data/visualizations) and 2016-present through USA-NPN Geo Web Services (available upon request). Pine needle scale insects pierce pine needles and consume sap. Treatments are often applied when crawlers emerge from their eggs and before they develop their protective waxy coating. For all inquiries regarding this dataset, please contact the USA-NPN. This data is subject to the USA-NPN's Data Use Policy.

物候预测图（Pheno Forecast）可对多种物种的关键生命周期阶段进行预测，以优化保护与管理成效。针对昆虫害虫物种，该物候预测基于已发表的物种生命周期关键节点的生长度日（GDD）阈值。这些关键节点通常对应管理措施实施效果最佳的生命周期阶段。该类图件每日更新，并可提供未来6天的预测数据。本数据集针对松针盾蚧（Chionaspis pinifoliae）的爬动若虫孵化期进行预测，其阈值为298-448华氏度的生长度日（基准温度50华氏度，起始日期为3月1日，采用简单平均GDD计算法）。用户可通过美国国家物候网（USA-NPN）可视化工具（https://www.usanpn.org/data/visualizations）获取当年及上一年的预测结果；2016年至今的预测数据则可通过美国国家物候网地理网络服务获取（需提交申请）。松针盾蚧会刺破松针并吸食汁液，防治措施通常在初孵若虫从卵中孵化后、且其形成保护性蜡质覆盖层前实施。若需咨询该数据集相关事宜，请联系美国国家物候网（USA-NPN）。本数据集需遵守美国国家物候网的数据使用政策。