Pulse crops such as chickpeas, lentils, and dry peas are grown widely for human and animal consumption. Major yield- and quality-limiting constraints include diseases caused by fungi and oomycetes. The environmental and health concerns of synthetic fungicides used for disease management, emergence of fungicide-resistant pathogens, and demand for organic pulse crop products necessitate the search for effective alternatives. Safe and environmentally friendly plant-derived essential oils (EOs) have been reported effective against some pathogenic fungi. Growth on EO-amended growth medium and an inverted Petri plate assay were used to determine the effects of 38 oils and their volatiles on mycelial growth and spore germination of important pathogenic fungi and oomycetes: Aphanomyces euteiches, Botrytis cinerea, Colletotrichum lentis, Didymella pisi, D. rabiei, D. lentis, Fusarium avenaceum, Stemphylium beticola, Sclerotinia sclerotiorum, and Pythium sylvaticum. Palmarosa, oregano, clove, cinnamon, lemongrass, citronella, and thyme oils incorporated in media inhibited mycelial growth of all the pathogens by 100% at 1:1,000 to 1:4,000 dilution. In addition, thyme oil (1:500 dilution) showed complete inhibition of conidial germination (0% germination) of F. avenaceum and D. pisi. All seven EO volatiles inhibited mycelial growth of all pathogens by 50 to 100% except for B. cinerea and S. sclerotiorum. EO effects on mycelial growth were fungistatic, fungicidal, or both and varied by EO. EOs show potential for management of major crop diseases in organic and conventional production systems.

鹰嘴豆、扁豆和干豌豆等豆类作物广泛种植供人类和动物食用。主要的产量和质量限制因素包括由真菌和卵菌引起的疾病。用于疾病管理的合成杀菌剂的环境和健康问题、抗杀菌剂病原体的出现以及对有机豆类作物产品的需求，需要寻找有效的替代品。据报道，安全且环保的植物精油 (EO) 可有效对抗某些病原真菌。在 EO 改良的生长培养基上的生长和倒置培养皿试验用于确定 38 种油及其挥发物对重要病原真菌和卵菌的菌丝生长和孢子萌发的影响：Aphanomyces euteiches ,Botrytis cinerea、Colletotrichum lentis、Didymella pisi、D. rabiei、D.lentis、Fusarium avenaceum、Stemphylium beticola、Sclerotinia sclerotiorum和Pythium sylvaticum。在培养基中加入棕榈油、牛至、丁香、肉桂、柠檬草、香茅油和百里香油，以 1:1,000 至 1:4,000 的稀释比例抑制所有病原体的菌丝体生长 100%。此外，百里香油（1:500 稀释）显示完全抑制F. avenaceum和D. pisi的分生孢子萌发（0% 萌发）. 除B. cinerea和S. sclerotiorum外，所有 7 种 EO 挥发物均抑制了所有病原体的菌丝体生长 50% 至 100% 。EO 对菌丝体生长的影响是抑菌的、杀真菌的或两者兼而有之，并且随 EO 的不同而不同。EOs 显示出在有机和传统生产系统中管理主要作物病害的潜力。