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Nowadays the development and application of alternative fuels (including biofuels) are highly important for several reasons, e.g., protection of the environment and people’s health and achievement of sustainable development, etc. Diesel fuels are important in road transportation in the European Union and all over the world. So, it is necessary to develop alternative (bio)­fuels for diesel engines. During the development of these alternative fuels, it is necessary to take into account that it does not endanger the cultivation of food and feed crops. According to the above-mentioned reasons, we studied the catalytic hydrogenation of mixtures of the middle distillates derived from thermal cracking of waste polypropylene (WPPCF) (5–30%), waste cooking oil (WCO) (20–45%), and straight-run gas oil (GO) (50%), on a sulfided NiMo/Al2O3 catalyst to produce diesel fuel. We investigated the effects of feedstock compositions and process parameters (T = 300–360 °C, LHSV = 1.0–3.0 h–1, P = 40 bar, hydrogen/feedstock = 400 N m3/m3) on the main product’s quality and yield. We concluded that good quality diesel fuel blending components with high alternative component content (approximately 50%) can be produced from feedstocks having 30/20% WPPCF, 20/30% WCO, and 50% GO at advantageous process parameters (T = 340–360 °C, LHSV = 1.0 h–1, P = 40 bar, hydrogen/feedstock = 400 N m3/m3).

Biotypes of Amaranthus retroflexus L ., A. hybridus L., A. bouchonii Thell. and Chenopodium album L. insensitive to atrazine were collected from maize monoculture where atrazine had been applied extensively. Atrazine-resistant biotypes of A. retroflexus and A. hybridus showed phenmedipham and lenacil co-resistance and atrazine-resistant biotype of C. album showed fenuron co-resistance. An atrazin-resistant biotype of A. bouchonii with co-resistance to diuron was not resistant to fenuron, lenacil and phenmedipham.

Various populations of common lambsquarters (Chenopodium albumL. # CHEAL) and late-flowering goosefoot (Chenopodium strictumRoth. # CHESG) plants were studied at the eight-to ten-leaf stage. Prior to measurement of fluorescence induction, the detached leaves were vacuum infiltrated with unformulated atrazine [6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamine], diuron [N′-(3,4-dichlorophenyl)-N,N-dimethylurea], and pyrazon [5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone]. The fluorescence induction measurements were then made 1 h after adaptation in the dark. The fluorescence induction curves of intact leaves were recorded with a laboratorybuilt apparatus. A xenon lamp was used to produce the actinic beam. Cytological tests were done on meristematic cells of the root tips of the seedlings treated in 2 nM 8-hydroxyquinoline. The cytotypes were hexaploids (among which were atrazine-susceptible, pyrazon-susceptible, atrazine-resistant, and pyrazon-tolerant populations), and tetraploids (among which were atrazine-susceptible and atrazine-tolerant populations).

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