Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 8
Written by Mihail - Anton GHIGA, Alin CHIVA
In the scientific literature, there are several definitions of biostimulants. According to Chojnacka et al. 2014 which quotes on Vernieri et al. 2006 and Schmidt et al. 2008: biostimulants are environmental friendly, natural substances which are able to promote vegetative growth, mineral nutrient uptake, plant response to different pedoclimatic conditions and tolerance to abiotic stresses, biostimulants are organic materials that, when applied in small quantities, enhance plant growth and development such that the response cannot be attributed to application of traditional plant nutrients. In this paper we present the results obtained from experiments that took place both in the laboratory, greenhouse and in the field. Through these experiments we wanted to test the capacity of bioactive macerated extracts from weeds, plants from the spontaneous flora of Romania, such as comfrey - Symphytum officinale, horsetail - Equisetum arvense, nettle – Urtica dioica, dandelion – Taraxacum officinale , to stimulate the germination, growth and development of pepper seeds and tomato seedlings. We made the macerates from the plants from the spontaneous flora from our country according to the data found in the specialized literature with small differences and adaptations that we present to Materials and methods. The results obtained by us are encouraging because finding renewable sources of plant biostimulators is important in the context of modern agriculture, which seeks non-polluting solutions to replace polluting products - synthetic chemical fertilizers, pesticides, etc.
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