The article is devoted to the use of waste power plants. The basic physical and mechanical properties are investigated and the optimal compositions of fine concrete are developed. The optimal granulometric composition of ash and slag waste was selected for use as aggregates for concrete
The Investigations of the dynamics of facultative parasites in the period of plant development showed that the most frequent are weak (for wheat) of the pathogens F. solani, F. oxysporum; from strong – F. moniliforme, F, avenaceum. After overwintering plants, a decrease in the occurrence of weak pathogens, and increasing, stronger, more aggressive threat. This suggests that the overwintering is a very adverse period in the life of plants and is accompanied by negative changes in the colonizing microbiota. In the spring to beginning of earing observed the growth of strong and weak colonizing fungal pathogens, which often makes it necessary to conduct this phase of the development of protective fungicide treatments against fusariosis. In the conducted experiments, the yield increase of winter wheat on various predecessors of such treatments was often significant, at the level of 20-30% or more.
The article considers the issues of selection of the elm for decorative gardening. On the basis of complex analysis of the estimation of economically valuable selection of samples. Shown the advantage of individual selection. Investigated the variability of morphological characteristics of the form of the crown, of leaves and fruits. Allocated promising group of plants that allows you to continue breeding work. Summarizes the results of the hybridization of species of elm.
АННОТАЦИЯВ статье рассмотрены вопросы селекции вяза для декоративного садоводства. На основании комплексного анализа произведена оценка хозяйственно ценных селекционных образцов. Показано преимущество индивидуального отбора. Изучена изменчивость морфологических признаков формы кроны, листьев и плодов. Выделены перспективные группы растений, что позволяет продолжать селекционную работу. Обобщены результаты гибридизации видов вяза.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations –citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.