Optimising Plant Establishment 2020 Hart Chickpea Experiment

Data from the 2020 crop establishment trial at Hart, SA. The trial compared the establishment of chickpea at different target seeding rates, under a conventional seeder and under a precision seeder. This experiment was run under the UOA1803-009RTX GRDC research project led by the University of Adelaide, and the experiment and data collection were managed locally by the Hart Field-Site Group.Files:2020 Hart Chickpea.xlsxExperiment setup:Experiment managed locally by the Hart Field-Site Group. The trial was organised as a split plot design, with 3 whole plot treatments (conventional seeder, precision seeder, and perfect placement (i.e. handthinned plots curated to consistent interplant distance after plant emergence)), and three subplot treatments for the seeding rate (15, 25 and 35 plants/m2). The design was arranged spatially in a single column (3 bays long) and 36 rows, 4 replicates, 36 plots in total.Variables recorded:stubble (%), stubble (t/ha), establishment count (plants/m2), seedling depth (mm), interplant distance (cm), GS75 biomass dry matter (t/ha), harvest biomass wet weight (g), harvest biomass dry weight (g), harvest index, yield (t/ha), 300 seed weight (g)Data collection and assessment:The paddock was seeded on 14/05/2020, with a pre-seed stubble assessment on 13/05/2020. Plant emergence counts were made on 18/06/2020, 29/06/2020 and 14/07/2020 to assess establishment. Seedling depth in mm was also measured on 14/07/2020 for plots in bay 1, with five measurements made per plot and averaged. Interplant distances were recorded at each plot in cm. NDVI was measured on five separate occasions: 30/06/2020, 14/07/2020, 24/07/2020, 03/08/2020 and 13/08/2020. Biomass cuts were made on 24/09/2020 at Growth Stage 75 and the dry matter weight recorded, and harvest maturity cuts were made on 29/10/2020 to assess weight and harvest index. The crop was harvested on 09/12/2020, with the yield (t/ha) and 300 seed weight recorded. Additionally, some photos were taken of the trial and stubble during the crop growth, and these are available embedded in the xlsx file.

本数据集源自2020年于南澳大利亚哈特地区进行的作物播种试验。该试验旨在对比不同目标播种密度下鹰嘴豆的播种成活情况，分别于传统播种机和精量播种机下进行。实验由阿德莱德大学主持的UOA1803-009RTX GRDC研究项目资助，并由哈特田间试验组负责现场管理和数据收集。数据文件：2020 Hart Chickpea.xlsx
实验设置：实验由哈特田间试验组在当地管理。试验采用裂区设计，包括3个区组处理（传统播种机、精量播种机和理想定位（即手选区，植物出苗后保持一致株距的精挑细选区）），以及针对播种密度的3个亚区组处理（15、25和35株/平方米）。该设计在空间上排列为一列（3个湾长）和36行，共4个重复，总计36个小区。记录的变量包括：秸秆（百分比）、秸秆（吨/公顷）、成活株数（株/平方米）、幼苗深度（毫米）、株间距离（厘米）、GS75生物量干物质（吨/公顷）、收获生物量鲜重（克）、收获生物量干重（克）、收获指数、产量（吨/公顷）、300粒种子重量（克）。数据收集与评估：播种于2020年5月14日进行，播种前于5月13日进行秸秆评估。植物出苗计数于6月18日、6月29日和7月14日进行，以评估成活情况。7月14日对第1个湾的幼苗深度（毫米）进行测量，每个小区进行五次测量并取平均值。每个小区的株间距离（厘米）也被记录。归一化植被指数（NDVI）在五个不同时间点进行测量：6月30日、7月14日、7月24日、8月3日和8月13日。生物量切割于生长阶段75（9月24日）进行，记录干物质重量，收获成熟切割于10月29日进行，以评估重量和收获指数。作物于12月9日收获，记录产量（吨/公顷）和300粒种子重量。此外，在作物生长期间拍摄了一些试验和秸秆的照片，这些照片已嵌入xlsx文件中。