Cover Crop Impacts Fusarium Head Blight Incidence and Mycotoxin Contamination of Cannabis sativa.

IF 2.8 2区农林科学 Q1 PLANT SCIENCES

Plant disease Pub Date : 2026-09-01 Epub Date: 2026-09-03 DOI:10.1094/PDIS-02-26-0295-RE

Henry Smith, Annika Church, Robert Pearce, Misbakhul Munir, Edward Dixon, Nicole Ward Gauthier

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引用次数: 0

Abstract

Hemp has been commercially produced in Kentucky since federal reintroduction in 2018. Fusarium head blight (FHB) is among the most detrimental diseases encountered in Kentucky hemp production. Growers are heavily reliant on cultural management practices to manage FHB of hemp, as resistant cultivars have not been identified and fungicide options are limited. A 2-year multisite field trial was conducted in 2024 and 2025 to determine whether cover crop preceding hemp influenced Fusarium graminearum inoculum load and FHB incidence as well as mycotoxin contamination. Hemp that was no-till planted following a wheat cover crop was exposed to more inoculum than hemp no-till planted into mustard or planted following conventional tillage. In addition, the hemp following wheat had the highest levels of FHB incidence and F. graminearum DNA and mycotoxins in the harvested grain. The mycotoxin contamination levels observed in 2024 were above the advisory limits set for other crops. The results from this study indicate that cultural management practices such as tillage or cover cropping can have significant impacts on FHB in hemp production.

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覆盖作物对大麻赤霉病发病率和霉菌毒素污染的影响

自2018年联邦政府重新引入大麻以来，大麻一直在肯塔基州进行商业生产。镰刀菌头疫病（FHB）是肯塔基州大麻生产中遇到的最有害的疾病之一。种植者严重依赖文化管理实践来管理大麻的FHB，因为抗性品种尚未确定，杀菌剂选择有限。在2024年和2025年进行了一项为期两年的多地点田间试验，以确定大麻覆盖前的作物是否影响镰刀菌接种量和FHB发病率，以及霉菌毒素污染。在小麦覆盖作物后免耕种植的大麻比在芥菜中免耕种植或在常规耕作后种植的大麻暴露于更多的接种量。此外，继小麦之后的大麻在收获的谷物中有最高的FHB发病率和F. graminearum DNA和真菌毒素水平。2024年观察到的霉菌毒素污染水平高于对其他作物设定的建议限值。本研究结果表明，耕作或覆盖作物等栽培管理措施对大麻生产中的FHB有显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant disease 农林科学-植物科学

CiteScore

5.10

自引率

13.30%

发文量

1993

审稿时长

2 months

期刊介绍： Plant Disease is the leading international journal for rapid reporting of research on new, emerging, and established plant diseases. The journal publishes papers that describe basic and applied research focusing on practical aspects of disease diagnosis, development, and management.