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Abstract
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Plant biostimulants which are defined as substances (humic acids, protein hydrolysates and seaweed extracts) and/or microbial inoculants (plant growth promoting rhizobacteria, arbuscular mycorrhizal fungi and Trichoderma spp.) applied to plants with the aim to enhance plant resilience and also to improve nutrient uptake and translocation(de Pascale et al., 2018). In modern agriculture, along with fungicides, herbicides and insecticides, various products classified as plant growth stimulants are used [1,2]. This relatively new group of products is used to maximize crop yield and quality, especially under unfavorable for plant growth and development environmental conditions [3–5]. The role of biostimulants is to control and accelerate the life processes of plants, increase the resistance to stress and stimulate their development (roots and leaves) [1,3]. Biostimulants contribute to better seed germination and induce biological activity of plants. These products are also safe for the environment and contribute to sustainable, high-output low-input crop productions [3,4]. Their application helps to reduce the amount of chemicals used in agriculture and plant protection [4]. (Popko et al., 2018)
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