The effects of soil amendments and inoculation timing on the development of clubroot (Plasmodiophora brassicae)

This dataset includes raw data from the master's thesis of Shauna Chesney titled "The effects of soil amendments and inoculation timing on the development of clubroot (Plasmodiophora brassicae)." Abstract: Clubroot is an important disease limiting canola production in Canada. The current study examined the effects of selected soil amendments and inoculation timings on the development of clubroot. Lime consistently reduced clubroot severity when soil pH was raised above 7.0 but there was no interaction with boron. Boron reduced clubroot severity at relatively high rates. However, determining how boron suppresses clubroot was inconclusive. An experimental biofumigant was evaluated and was not effective against clubroot. Induced resistance / susceptibility was investigated using the reaction to avirulent / virulent pathotypes on split-root plants. Inoculation on one side of the split-root system did not induce a resistant or susceptible reaction on the other side when inoculated with the alternative pathotype. Based on the results of these studies, lime is the best option to include in a management system for clubroot in canola.

本数据集包含Shauna Chesney硕士论文《土壤改良剂与接种时间对根肿病（clubroot，由芸薹根肿菌（Plasmodiophora brassicae）引起）发展的影响》的原始数据。
摘要：根肿病（clubroot）是制约加拿大油菜（canola）生产的重要病害。本研究考察了选定土壤改良剂（soil amendments）与接种时间（inoculation timing）对根肿病发展的影响。当土壤pH（soil pH）提升至7.0以上时，石灰（lime）可持续降低根肿病严重程度，但与硼（boron）无交互作用；硼在较高施用量下可降低根肿病严重程度，但其抑制机制尚未明确。实验性生物熏蒸剂（biofumigant）经评估对根肿病无效。通过分根植物（split-root plants）对无毒/有毒致病型（avirulent/virulent pathotypes）的反应，研究了诱导抗性/敏感性（induced resistance/susceptibility）：分根系统一侧接种后，另一侧对接种替代致病型未表现出抗性或敏感性反应。基于上述结果，石灰是油菜根肿病管理体系中的最佳选择。