Growth and Yield Data for the Bushland, Texas, Soybean Datasets

This dataset consists of growth and yield data for each season when soybean [Glycine max (L.) Merr.] was grown for seed at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). In the 1994, 2003, 2004, and 2010 seasons, soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. In 2019, soybean was grown on four large, precision weighing lysimeters and their surrounding 4.4 ha fields. The square fields are themselves arranged in a larger square with four fields in four adjacent quadrants of the larger square. Fields and lysimeters within each field are thus designated northeast (NE), southeast (SE), northwest (NW), and southwest (SW). Soybean was grown on different combinations of fields in different years. Irrigation was by linear move sprinkler system in 1995, 2003, 2004, and 2010 although in 2010 only one irrigation was applied to establish the crop after which it was grown as a dryland crop. Irrigation protocols described as full were managed to replenish soil water used by the crop on a weekly or more frequent basis as determined by soil profile water content readings made with a neutron probe to 2.4-m depth in the field. Irrigation protocols described as deficit typically involved irrigations to establish the crop early in the season, followed by reduced or absent irrigations later in the season (typically in the later winter and spring).
The growth and yield data include plant population density, height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, head mass (when present), kernel or seed number, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. In most cases yield data are available from both manual sampling on replicate plots in each field and from machine harvest. Machine harvest yields are commonly smaller than hand harvest yields due to combine losses.
These datasets originate from research aimed at determining crop water use (ET), crop coefficients for use in ET-based irrigation scheduling based on a reference ET, crop growth, yield, harvest index, and crop water productivity as affected by irrigation method, timing, amount (full or some degree of deficit), agronomic practices, cultivar, and weather. Prior publications have focused on soybean ET, crop coefficients, and crop water productivity. Crop coefficients have been used by ET networks. The data have utility for testing simulation models of crop ET, growth, and yield and have been used for testing, and calibrating models of ET that use satellite and/or weather data.
See the README for descriptions of each data file. Resources in this dataset:Resource Title: 1995 Bushland, TX, west soybean growth and yield data. File Name: 1995 West Soybean_Growth_and_Yield-V2.xlsxResource Title: 2003 Bushland, TX, east soybean growth and yield data. File Name: 2003 East Soybean_Growth_and_Yield-V2.xlsxResource Title: 2004 Bushland, TX, east soybean growth and yield data. File Name: 2004 East Soybean_Growth-and_Yield-V2.xlsxResource Title: 2019 Bushland, TX, east soybean growth and yield data. File Name: 2019 East Soybean_Growth_and_Yield-V2.xlsxResource Title: 2019 Bushland, TX, west soybean growth and yield data. File Name: 2019 West Soybean_Growth_and_Yield-V2.xlsxResource Title: 2010 Bushland, TX, west soybean growth and yield data. File Name: 2010 West_Soybean_Growth_and_Yield-V2.xlsxResource Title: README. File Name: README_Soybean_Growth_and_Yield.txt

本数据集收录了在美利坚合众国农业部农业研究服务局（USDA-ARS） Conservation and Production Laboratory（CPRL）土壤与水管理研究单元（SWMRU）气象观测站，位于德克萨斯州布什兰德（纬度 35.186714°，经度 -102.094189°，海拔高度1170米以上海平面）种植大豆（Glycine max (L.) Merr.）以籽实为目的时，每个生长季节的生长和产量数据。1994年、2003年、2004年和2010年，大豆种植于两个大型、精准称重的大型水桶中，每个水桶位于4.44公顷正方形田地的中心。2019年，大豆种植于四个大型、精准称重的大型水桶及其周边4.4公顷的田地中。这些正方形田地本身排列在一个更大的正方形内，四个田地分别位于更大正方形的四个相邻象限。每个田地内的田地和水桶被指定为东北（NE）、东南（SE）、西北（NW）和西南（SW）。大豆在不同年份种植于不同组合的田地中。1995年、2003年、2004年和2010年，灌溉通过线性移动喷灌系统进行，尽管在2010年，仅在建立作物后进行了一次灌溉，之后作物以旱作为主。描述为完全的灌溉方案旨在根据土壤剖面水分含量读数（使用中子探针在田间进行，深度至2.4米）以每周或更频繁的频率补充作物使用的土壤水分。描述为缺水的灌溉方案通常涉及在生长季节早期建立作物的灌溉，随后在生长季节后期减少或停止灌溉（通常在冬季和春季后期）。生长和产量数据包括植物种群密度、高度、植物行宽、叶面积指数、生长阶段、总地上生物量、叶和茎生物量、头质量（如有），粒数或种子数以及最终产量。数据来自田间重复样本以及非破坏性（除最终收获外）的称重水桶测量。在大多数情况下，产量数据均来自每个田地重复地块的田间手动采样和机械收获。由于联合收割机的损失，机械收获的产量通常小于手工收获的产量。这些数据集源于旨在确定作物水分利用（ET）、基于参考ET的ET-灌溉调度所用的作物系数、作物生长、产量、收获指数以及受灌溉方法、时间、数量（完全或一定程度的缺水）、农艺实践、品种和天气影响的作物水分生产力等方面的研究。先前发表的文献主要关注大豆ET、作物系数和作物水分生产力。作物系数已被ET网络所采用。这些数据对于测试作物ET、生长和产量模拟模型具有实用性，并且已用于测试和校准使用卫星和/或天气数据的ET模型。详见README文件，其中对每个数据文件进行了描述。数据集中包含的资源如下：

资源标题：1995年布什兰德，德克萨斯州西部大豆生长和产量数据。文件名：1995 West Soybean_Growth_and_Yield-V2.xlsx

资源标题：2003年布什兰德，德克萨斯州东部大豆生长和产量数据。文件名：2003 East Soybean_Growth_and_Yield-V2.xlsx

资源标题：2004年布什兰德，德克萨斯州东部大豆生长和产量数据。文件名：2004 East Soybean_Growth-and_Yield-V2.xlsx

资源标题：2019年布什兰德，德克萨斯州东部大豆生长和产量数据。文件名：2019 East Soybean_Growth_and_Yield-V2.xlsx

资源标题：2019年布什兰德，德克萨斯州西部大豆生长和产量数据。文件名：2019 West Soybean_Growth_and_Yield-V2.xlsx

资源标题：2010年布什兰德，德克萨斯州西部大豆生长和产量数据。文件名：2010 West_Soybean_Growth_and_Yield-V2.xlsx

资源标题：README。文件名：README_Soybean_Growth_and_Yield.txt