Strawberry and peach crops are of great economic and social importance, mainly due to the added value and income generation for small and medium producers in different regions of Brazil. Some fungal diseases can compromise the final profitability of production, such as those caused by Colletotrichum sp., Botrytis cinerea and Monilinia fructicola fungi. The control of these pathogens mainly occurs through fungicides, which has been generating concern for consumers, as well as biological imbalance and environmental contamination. The need for new alternatives for disease control has been leading to more research being conducted on essential oils. Our scientific questions were based on a compilation of experiments which revealed the efficiency of essential oils in disease control. With the purpose of evaluating the fungicidal activity of Aloysia citriodora, Cymbopogon winterianus, Lippia alba and Ocimum americanum essential oils on the control of fungi, such as Colletotrichum sp., Botrytis cinerea and Monilinia fructicola in vitro and in the post-harvest of fruits, this work was developed at the Federal University of Santa Maria, Frederico Westphalen county (Rio Grande do Sul state), Brazil, from 2016 to 2018. The following evaluations were done: (i) characterization of essential oil doses in vitro for controlling Colletotrichum sp., Botrytis cinerea and Monilinia fructicola fungi, and (ii) determination of the minimum inhibitory concentration (Ω, mL L^-1) of essential oils in post-harvest of strawberries and peaches. All essential oils have high fungicidal activity in vitro experiments. The A. citriodora, L. alba and O. americanum essential oils had a satisfactory effect for post-harvest controlling of Colletotrichum sp. C. winterianus and O. americanum. The essential oils promoted satisfactory post-harvest control of Botrytis cinerea in strawberries. All essential oils have high fungitoxicity against Monilinia fructicola in vitro and post-harvest, highlighting the greater efficiency of A. citriodora essential oil in peaches. The essential oils present high fungitoxicity for controlling diseases in strawberries and peaches, presenting high potential performance for formulating commercial fungicide.

草莓和桃子作物具有重要的经济和社会意义，这主要是由于巴西不同地区的中小生产者的增值和创收。一些真菌病会损害生产的最终获利能力，例如那些由炭疽菌，灰葡萄孢和灰霉菌引起的病。菌类。这些病原体的控制主要通过杀菌剂进行，这引起了消费者的关注，以及生物失衡和环境污染。对新的疾病控制替代品的需求已导致对精油进行更多的研究。我们的科学问题基于一系列实验，这些实验揭示了精油在疾病控制中的效率。随着评估的杀菌活性的目的阿洛伊西亚桉，香茅winterianus，马鞭草白和灰罗勒对真菌，如控制精油炭疽病菌，灰霉病和这项研究是在2016年至2018年间，在巴西弗雷德里克·威斯特伐伦县（南里奥格兰德州）的圣玛丽亚联邦大学进行的，在水果的体外和果实采后进行。进行了以下评估： i）表征体外用于控制炭疽菌，灰葡萄孢和莫妮菌果蝇真菌的精油剂量，以及（ii）确定草莓和草莓采后的精油最低抑菌浓度（Ω，mL L ^-1）桃子。所有精油在体外实验中均具有较高的杀菌活性。该A.桉，白L.和O. americanum精油对防治炭疽菌具有良好的效果。C. winterianus和O. americanum。精油促进了草莓中灰葡萄孢的满意收获后控制。所有的香精油在体外和收获后均对褐飞虱具有很高的真菌毒性，这突出了桃中A. citriodora香精油的更高功效。精油对草莓和桃子的疾病控制具有很高的真菌毒性，在配制商业杀菌剂方面具有很高的潜在性能。