Vegetable biomass consumes a small part of the solar energy, about 1%, but enough to cover the energy needs of mankind and maintain the life of the entire planet [1]. Vegetable biomass is generators of minerals, chemical compounds, materials and fibres for industry and animal husbandry feed. The enormous interest in the superior recovery of biomass and vegetable waste has led to the additional research within the Research and Development Department at Hofigal SA, which I am a member of, in 2022 for: Making soils and substrates, from vegetable waste, for the growth of fungi. Industrial reuse of waste from industrial production activity. Obtain liquid, natural fertilizers and solid compost (humus) by recovering vegetable waste resulting from industrial activity and vegetable biomass resulting from crop maintenance. Create new sources of raw materials by acclimatizing new plants. Create new aqueous and hydroalcoholic plant extracts from spontaneous flora to protect agricultural crops against pests without using synthetic chemicals and other research activities. The major objective of this research is to reduce the amount of waste and plant biomass resulting at Hofigal, as well as to create new resources of plant raw materials, leading to new products and food supplements for health care. For this purpose, we aimed to reduce the amount of vegetable waste, from industrial activity, from 30 tons to one ton/year. We also aimed to obtain 5 tons of plant protection solutions and 20 tons of liquid organic fertilizer from the aerobic fermentation of compost on concrete platforms. This liquid fertilizer will be used for fertilizing the plants with the irrigation/watering of the plants, because it is applied diluted. We managed to acclimatize, in industrial cultures, in a 1-year cycle of culture, five new plants, three from the local spontaneous flora (wormwood, black wormwood and orpine-Sedum telephium) and two from the specific flora of China and Japan (lophantus and perilla). The achievements of the Hofigal Research and Development Department were validated by the Hofigal Scientific Council and proposed in the production plan for the year 2023-2024.

Abstract:The paper presents a series of models used to identify the characteristics of the romanian agriculture in the 1960-2006 period of time. Using econometric methods we try to identify significant differences between agricultural productions obtained before and after the year of the revolution. Thus, following the dynamics of time series considered we identified two different time periods. The first is located before the 1989 revolution, and the second in the period that followed it. The two periods are different compared to the evolution of the considered indicators. Key words: ADF test, regression models, agriculture evolutionAbstrakt: Článek přináší skupinu modelů, jež byly využity k identifikaci charakteristik rumunského zemědělství v období let . Snažili jsme se s využitím ekonometrických metod identifikovat významné rozdíly mezi zemědělskou produkcí vytvořenou před rokem revoluce a po něm. na základě dynamických časových řad jsme tak identifikovali dvě časová období. První z nich je v období před revolucí 1989, druhé v období následujícím. Tato dvě období jsou výrazně odlišná, pokud jde o vývoj zkoumaných indikátorů.