Optimising Plant Establishment 2018-2019 Narraport Lentil Experiment

Data from the 2018-2019 crop establishment trial at Narraport, VIC. The trial compared the establishment of Hurricane variety lentil at different densities, under a conventional cone seeder and under a precision seeder, and at two row spacings (a narrow row spacing of 22.9cm, and a wide row spacing of 30.5cm). The experiment was run under the UOA1803-009RTX GRDC project led by the University of Adelaide, with the experiment management and data collection handled locally in Narraport by the Birchip Cropping Group (BCG).Files:2018 Birchip Lentils.xlsx, 2019 Birchip Lentil.xlsxExperiment setup:The experiment was managed locally by the Birchip Cropping Group (BCG). The trial was organised as a split split plot with 6 treatments of target plant densities (40, 60, 80, 100, 120, 140 plants/m2), with 2 different row spacings (narrow 22.9cm row vs wide 30.5cm row), and two different seeders used (cone seeder vs precision seeder). The design was embedded in a spatial grid with 16 rows (not including the two bordering buffer plots on either side), 6 ranges, and 4 replicates, for 96 plots total. The variety used for these Narraport trials was Hurricane variety lentil. The trial randomisation differed between 2018 and 2019, with the design staying mostly the same, but with the spatial structure changing in 2019 to accommodate an extra filler row.Variables recorded:2018:establishment count (plants/m2), interplant distance (cm), seed bed moisture (%), NDVI, Anthesis dry matter (t/ha and also per-plant), yield (t/ha, and also corrected to 12% moisture), harvest weight (kg), 100 grain weight (g), 1000 grain weight (g).2019:establishment count (plants/m2), interplant distance (cm), NDVI, flowering biomass (t/ha), harvest biomass (t/ha), yield (t/ha), 1000 grain weight (g).Data collection and assessment:2018:The paddock was sown to lentil on 15/05/2018. Fertiliser and chemical application was applied between 15/05/2018 and 2/12/2018 according to the schedule provided in the '2018 Birchip Lentils.xlsx' spreadsheet. Date of seedling emergence was 31/05/2018. The lentil establishment was recorded on six occasions between 31/05/2018 and 20/06/2018, counting all of the plants emerging in two rows within a 3m pinned section. During the emergence, soil moisture probes were used to take five measurements of the soil moisture between 31/05/2018 and 15/06/2018. Sowing depth was recorded by paddock survey after maximum establishment. Interplant distances were also measured by survey after maximum establishment was reached. NDVI measurements were recorded four times between 26/06/2018 and 09/08/2018, using the handheld GreenSeeker held 50cm above the crop canopy and held horizontally over the two middle crop rows. Biomass cuts were made at anthesis, with 2 cuts/plot minimum using a ruler, and the anthesis dry mass was measured. Harvest and grain assessments were recorded at lentil harvest on 07/12/2018, with the yield, 100-grain weight and 1000-grain weight recorded.2019:The '2019 Birchip Lentil.xlsx' spreadsheet contains the recorded values for the variables measured during the second year of the experiment. NDVI were recorded for each plot 6 times between 20/06/2019 and 26/08/2019. The interplant distance (cm), plant establishment, flowering biomass, harvest biomass, yield and thousand-grain weight were also recorded.本数据集源自澳大利亚维多利亚州纳拉波特（Narraport, VIC）2018-2019年度作物出苗试验。该试验对比了飓风（Hurricane）品种小扁豆（lentil）在不同种植密度下的出苗表现，分别采用常规锥形播种机（cone seeder）与精密播种机（precision seeder），并设置两种行间距：窄行22.9cm与宽行30.5cm。本试验由阿德莱德大学（University of Adelaide）牵头的UOA1803-009RTX GRDC项目开展，试验管理与数据收集工作由伯奇普作物集团（Birchip Cropping Group, BCG）在纳拉波特本地完成。 相关数据文件：2018 Birchip Lentils.xlsx、2019 Birchip Lentil.xlsx 试验设置： 本试验采用裂裂区试验设计，设置6个目标植株密度处理（40、60、80、100、120、140株/m²）、2种行间距（22.9cm窄行 vs 30.5cm宽行）以及2种播种机类型（常规锥形播种机 vs 精密播种机）。试验布局为空间网格，含16个小区（不含两侧各2个边界缓冲小区）、6个列区、4次重复，总计96个试验小区。本次纳拉波特试验所用品种为飓风（Hurricane）小扁豆。2018与2019年的试验随机化方案存在差异：整体试验框架基本保持一致，但2019年为增设额外填充行调整了空间结构。 记录变量： 2018年测定变量包括：出苗数（株/m²）、株间距离（cm）、苗床含水量（%）、归一化植被指数（Normalized Difference Vegetation Index, NDVI）、开花期干物质（t/ha，同时记录单株干物质量）、产量（t/ha，校正至12%含水量）、收获重量（kg）、百粒重（g）、千粒重（g）。 2019年测定变量包括：出苗数（株/m²）、株间距离（cm）、归一化植被指数（NDVI）、开花生物量（t/ha）、收获生物量（t/ha）、产量（t/ha）、千粒重（g）。 数据收集与评估： 2018年：试验田于2018年5月15日播种小扁豆。肥料与化学品施用按照"2018 Birchip Lentils.xlsx"表格中的时间表，于2018年5月15日至12月2日期间完成。幼苗出苗日期为2018年5月31日。分别于2018年5月31日至6月20日期间的6个时间点记录小扁豆出苗情况，统计3m固定样段内两行中的所有出苗植株。出苗期间，于2018年5月31日至6月15日期间使用土壤湿度探针完成5次土壤含水量测定。最大出苗完成后，通过田间调查记录播种深度，并测定株间距离。于2018年6月26日至8月9日期间，使用手持GreenSeeker设备在作物冠层上方50cm处水平横跨作物中间两行进行4次NDVI测定。开花期进行生物量刈割，每个小区至少刈割2次，以直尺划定取样区域，随后测定开花期干物质量。于2018年12月7日小扁豆收获时记录收获与籽粒评估数据，包括产量、百粒重及千粒重。 2019年："2019 Birchip Lentil.xlsx"表格包含试验第二年测定的所有变量记录。于2019年6月20日至8月26日期间，对每个小区完成6次NDVI测定。同时记录株间距离（cm）、植株出苗数、开花生物量、收获生物量、产量及千粒重。