## 1 Introduction  
Despite the current challenges in the agricultural processing industry, ecological production remains essential. There is a noticeable trend among consumers toward goods produced in an environmentally friendly manner [1; 2; 3]. Although the concept of organic farming is many years old and is a dynamically developing field, its definition is still imprecise. According to universal terminology, organic production emphasizes sustainable practices, avoids the use of mineral fertilizers and pesticides, and promotes environmental protection [4; 5; 6]. This appeals to end consumers, who, along with the developing economy and increasing income, place more and more emphasis on conscious food choices [7; 8]. Although growing plants organically is a challenge in large areas, it is easier to grow for one's own needs. In Poland, this is due to the fact that the majority of soils are of classes IVa, IVb, V, and VI, i.e., of medium, poor, and very poor quality [9]. By growing plants in private gardens in accordance with organic practices, it is easier to maintain control over the soil and microclimate and to adjust crop rotation and fertilization [10]. Undoubtedly, red beet (_Beta vulgaris_ L.) is one of the most frequently cultivated vegetables, as the beet has long been used in traditional cuisines in Europe. It hails from the Mediterranean Region and has seen a surge in cultivation across Europe, America, and Asia in recent times, thanks to its rising popularity [11]. Furthermore, beet has the capacity to both treat and prevent multiple diseases. Numerous studies have emphasized the bioactive properties of beet in the antioxidant, anti-inflammatory, antitumor, liver-protective, cognitive enhancement, and blood pressure management realms [12]. However, the expenditure on its cultivation is one of the highest among cultivated plants. It requires large financial, material, and energy expenditures. The soil should be deeply loosened. Fertilization itself should be moderate. Optimal beet fertilization should be (in mg/dm) 70-90 N (N-NH\({}_{4}\) + N-NO\({}_{3}\)), 50-70 P, 175-250 K, 60-80 Mg, and 1500-2500 Ca. The optimal pH (H\({}_{2}\)O) for beet cultivation should be in the range of 6.0-7.5 [13]. A careful approach to nitrogen fertilization is particularly important, due to the plant's excessive ability to intake nitrates in storage roots [14]. Too much nitrogen may contribute to excessive root growth, poorer color, and difficulty in storage. A low dose of nitrogen causes intense coloration of beet leaves, rapid drying, and low root yield. As in the case of growing other plants, the basis for fertilization should be determining the current content of available elements in the soil. In the case of beet cultivation, it is important to maintain a minimum rotation period, i.e., four years. This will reduce the occurrence of weeds, pests, and diseases in the plantation [15; 16; 17]. In the context of the dynamic development of ecology and the gradual displacement of conventional solutions in plant cultivation and animal breeding, alternative solutions should be carefully considered. One of these is organic fertilizer and feed produced through insect activity [18]. Insects partially solve the problem of the need for high-protein food in animal farms, poultry, and fish. Farm insects, such as the mealworm (_Tenebrio molitor_ L.), the black fly (_Herneta illucens_ L.), and the superworm (_Zophobos morio_ F.), due to their chemical compositions, can be very good components for feed mixtures [19; 20]. This is primarily due to their high protein content, which ranges from 42% to 63%. This makes insects a good substitute for soybean or fish meal [21; 22]. The nutritional value of these foods will increase in the coming years. This will translate into large amounts of obtained excrement [23]. Insect fraxs has many agricultural advantages.