Barley (Hordeum vulgare L.) is an annual crop intended for human and animal consumption. Compared to other cereals, it has more modest requirements for heat and humidity and makes good use of winter moisture, which is why it is more resistant to drought. At the stage of pouring grain, it is most sensitive to water shortages. Due to its poorly developed roots, it does not tolerate soils of poorer quality, and it is necessary to avoid soils that retain excess rainwater and high groundwater. The most economically important pest on barley is the cereal moth (Oulema melanopus L.). Barley crops can be infected with diseases such as gray spot (Rhynchosporium secalis) and reticulated spot (Pyrenophora teres) as early as spring and autumn. Also, weeds can pose a big problem for grain quality and barley yield due to the deprivation of water, nutrients, space and light. The aim of the final paper is to monitor the occurrence of harmful organisms during barley cultivation on the Matijašević family farm in 2024, based on regular inspections and to describe methods for their control. On the area of 1.15 ha of spring barley, agrotechnical measures were carried out in accordance with the rules of the profession, including timely and proper protection of crops with chemical agents. Due to the use of barley for livestock feed and environmental protection, treatments were carried out only when necessary.