Summary The distribution of Alopecurus myosuroides (black‐grass) in fields is patchy. The locations of these patches can be influenced by the environment. This presents an opportunity for precision management through patch spraying. We surveyed five fields on various types of soil using a nested sampling design and recorded both A. myosuroides seedlings in autumn and seed heads in summer. We also measured soil properties at those sampling locations. We found that the patches of seed heads within a field were smaller than the seedling patches, suggesting that techniques for patch spraying based on maps of heads in the previous season could be inherently risky. We also found that the location of A. myosuroides patches within fields can be predicted through their relationship with environmental properties and that these relations are consistent across fields on different soil types. This improved understanding of the relations between soil properties and A. myosuroides seedlings could allow farmers to use pre‐existing or suitably supplemented soil maps already in use for the precision application of fertilisers as a starting point in the creation of herbicide application maps.

中文翻译：

---

在田间尺度上定义大穗看麦娘的栖息地生态位

小结 大头看麦娘（黑草）在田间的分布是不规则的。这些补丁的位置会受到环境的影响。这为通过贴剂喷洒进行精确管理提供了机会。我们使用嵌套抽样设计调查了各种类型土壤上的五个田地，并记录了秋季的 A. myosuroides 幼苗和夏季的种子头。我们还在这些采样点测量了土壤特性。我们发现田地内的种子头斑块比幼苗斑块小，这表明基于上一季种子头图的斑块喷洒技术可能存在固有风险。我们还发现 A. 田间的 myosuroides 斑块可以通过它们与环境特性的关系来预测，并且这些关系在不同土壤类型的田间是一致的。这种对土壤特性与 A. myosuroides 幼苗之间关系的更好理解可以让农民使用预先存在或适当补充的土壤图来精确施用肥料，作为创建除草剂施用图的起点。