Drivers of hydrogen cyanide in roots of field-grown cassava in Malawi

This dataset provides field and environmental data from multi-location cassava trials conducted in Malawi to examine hydrogen cyanide (HCN) content, yield, and related physiological and soil factors across different cultivars, sites, and harvest times. Two complementary files are included. Driver_of_cassava_hcn_field.xlsx · Contains agronomic, physiological, yield, and soil property data collected at the same sites and harvest intervals. · Variables include: leaf area index (LAI), plant height (cm), dry matter content (%), yield (t ha⁻¹), HCN concentration (mg kg⁻¹), and soil chemical/physical properties (pH, organic carbon, organic matter, nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese, zinc, clay %, silt %, texture class, and soil moisture content). · Data are structured by location, harvest time (MAP), replicate, and cultivar. Weather_driver_cassava_hcn_field.xlsx Provides site-specific environmental variables recorded during the experiment. Variables include total rainfall (mm), maximum and minimum temperature (°C), daily temperature range (DTR), solar radiation (MJ m⁻²), and growing degree days (GDD). Data are organised by location (Makoka, Chitedze, Chitala, Mkondezi), harvest time (6, 8, 10, 12 months after planting, MAP), and cultivar (Mbundumali, Sauti, Mpale, Sagonja). Corresponding HCN values are reported for each cultivar × site × harvest combination. These datasets together provide a comprehensive resource for examining the environmental and physiological factors influencing cassava cyanogenic potential and yield across different site conditions. They can be used to replicate the analyses in the manuscript, perform meta-analyses, or support further modelling of cassava food safety and agronomic performance.本数据集涵盖马拉维多地点木薯田间试验的田间与环境数据，旨在探究不同品种、试验位点及收获期下的氰化氢（hydrogen cyanide, HCN）含量、产量及相关生理与土壤影响因子。本数据集包含两份互补配套文件。 Driver_of_cassava_hcn_field.xlsx · 包含在相同试验点与收获间隔采集的农艺、生理、产量及土壤属性数据。 · 涉及变量包括：叶面积指数（leaf area index, LAI）、株高（cm）、干物质含量（%）、产量（t ha⁻¹）、HCN浓度（mg kg⁻¹），以及土壤化学/物理属性（pH、有机碳、有机质、氮、磷、钾、钙、镁、铁、锰、锌、黏粒占比（%）、粉粒占比（%）、质地类别与土壤含水量）。 · 数据按试验地点、收获时间（MAP，即播种后月数）、重复次数与品种进行组织。 Weather_driver_cassava_hcn_field.xlsx · 提供试验期间记录的定点环境变量。 · 涉及变量包括：总降雨量（mm）、最高与最低气温（°C）、气温日较差（daily temperature range, DTR）、太阳辐射（MJ m⁻²）与生长度日数（growing degree days, GDD）。 · 数据按试验地点（Makoka、Chitedze、Chitala、Mkondezi）、收获时间（播种后6、8、10、12个月，MAP）与品种（Mbundumali、Sauti、Mpale、Sagonja）进行整理。 · 针对每个品种×试验位点×收获组合，均报告了对应的HCN数值。 本数据集组合后可形成一套全面的研究资源，用于探究不同试验条件下影响木薯生氰潜力与产量的环境及生理因子。该数据集可用于复现论文中的相关分析、开展元分析，或支撑木薯食品安全与农艺性状表现的后续建模研究。