The ability to plant two or more hybrids during a single planting operation (i.e., multi-hybrid planting) has the potential to mitigate in-field yield variation caused by soil, disease pressures, environmental and water conditions. A multi-hybrid planting platform was utilized to conduct on-farm research trials in ten eastern Nebraska fields in 2016 and 2017. Trials focused on placement of an offensive versus defensive (i.e., drought tolerant) maize hybrid, largely based on soil type and water availability interactions. Management zones were created through use of Management Zone Analyst to cluster correlated data layers, including historic yield, soil texture and electrical conductivity maps into zones. Hybrid placement and zone delineation effectiveness were assessed through in-season vegetative index readings and yield comparisons after harvest. Above average growing season rainfall led to mixed yield results for both growing seasons with six sites showing no difference in hybrid-by-zone placement and four sites indicating a single hybrid outperformed the multi-hybrid approach. Results indicated a single hybrid should have been planted within each field to optimize economic return. In several fields, however, there was no negative consequence for planting a defensive hybrid which could provide a level of yield protection during drier years. Zone scenarios were created for each field to find correct zone delineation and hybrid placement for the respective growing season. Optimum hybrid placement was derived for each site using post processing and spatial interpolation techniques, however further validation across more site-years would mitigate the high amounts of temporal variability due to the growing seasons studied.

在单次种植操作（即多杂交种种植）中种植两种或多种杂交种的能力具有减轻由土壤、病害压力、环境和水条件引起的田间产量变化的潜力。2016 年和 2017 年，利用多杂交种种植平台在内布拉斯加州东部的 10 个田地进行了田间研究试验。试验的重点是放置进攻性与防御性（即耐旱）玉米杂交种，主要基于土壤类型和水可用性交互。通过使用 Management Zone Analyst 将相关数据层（包括历史产量、土壤质地和电导率图）聚集到区域中来创建管理区域。通过季节内植物指数读数和收获后的产量比较来评估杂交种放置和区域划定的有效性。高于平均生长季节的降雨量导致两个生长季节的产量结果参差不齐，六个地点的杂交种按区域放置没有差异，四个地点表明单一杂交种优于多杂交种方法。结果表明，应该在每个田地内种植单一杂交种，以优化经济回报。然而，在一些田地里，种植防御性杂交种并没有产生负面影响，这种杂交种可以在干旱年份提供一定程度的产量保护。为每个田地创建了区域场景，以便为各自的生长季节找到正确的区域划分和混合布局。使用后处理和空间插值技术为每个站点导出最佳混合布局，