Optimising Plant Establishment 2020 Hart Canola Experiment

Data from the 2020 crop establishment trial at Hart, SA. The trial compared the establishment of canola at different 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 Canola.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 emergence)), and three subplot treatments for the seeding rate (15, 25 and 40 seeds/m2). The design was arranged spatially in a single column 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), oil (%), 500 grain weight (g)Data collection and assessment:The paddock was seeded on 05/05/2020, with a stubble assessment within the plots on 13/05/2020. Plant emergence counts were made on 25/05/2020, 12/06/2020 and 07/07/2020 to assess establishment. Seedling depth in mm was also measured on 07/07/2020 for plots in replicate 4, with five measurements made per plot. Interplant distances were recorded at each plot in cm. NDVI was measured on 30/06/2020, 09/07/2020, 21/07/2020 and 03/08/2020. Biomass cuts were made on 09/09/2020 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 04/11/2020, with the yield (t/ha), oil content and 500 grain 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.

2020年哈特地区作物种植试验数据。该试验对比了在不同播种密度下，常规播种机和精量播种机下油菜的种植情况。该实验由南澳大利亚大学的UOA1803-009RTX GRDC科研项目领导，并由哈特试验场地小组负责本地管理和数据收集。文件：2020 Hart Canola.xlsx 实验设置：实验由哈特试验场地小组本地管理。试验采用裂区设计，包括三个全区处理（常规播种机、精量播种机和完美定位（即手工疏苗，确保出苗后植株间距离一致））以及三个亚区处理针对播种密度（15、25和40粒/平方米）。该设计在空间上排列为单列36行，4个重复，共计36个区。记录的变量：秸秆百分比（%）、秸秆量（吨/公顷）、种植数量（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）、油分百分比、500粒重（克）。数据收集与评估：种植于2020年5月5日，于5月13日在各区进行秸秆评估。于5月25日、6月12日和7月7日进行植株出苗计数，以评估种植情况。于7月7日对重复4的各区进行幼苗深度测量，每区测量五次。在各区记录株间距离。于6月30日、7月9日、7月21日和8月3日测量NDVI。于9月9日在生长阶段75进行生物量切割，并记录干物质重量，于10月29日进行收获成熟度切割，以评估重量和收获指数。作物于11月4日收获，记录产量（吨/公顷）、油分含量和500粒重。此外，还拍摄了一些试验和作物生长期间秸秆的照片，这些照片嵌入在xlsx文件中。