Nedal H. Mineral fertilizers, capsulated by natural disperse sorbents, influence on agro systems

This thesis work is dedicated to investigation of negative impacts of mineral fertilizers use on agro systems and development of methods of fertilizers capsulation with use of disperse materials and natural binding agent that lead to decrease of impacton environment. With a use of statistic data the level of negative impact of fertilizers in Ukraine and Hashemite Kingdom of Jordan was evaluated. Complex of experiments was made to choose the optimal content of capsule-creating composition. Mechanical properties of obtained fertilizers were determined. Migration of nutrients in ground was studied in laboratory experiments. Complex of agro ecological laboratory experiments was made which assisted understanding of influence of different types of fertilizers addition on soil pH level, soil micro flora development and plants growth kinetics. Field experiments showed increase of plants resistance to diseases, higher crop yield and higher coefficient of utilization when using capsulated mineral fertilizers.