Abstract

Abstract. A comprehensive study of raw materials in the Lipetsk region as organic waste in conjunction with zeolite-containing rocks in crop production is necessary to obtain new fundamental knowledge. The purpose of the study was to study the influence of different norms of fertilizers on photosynthetic capacity and pigment of plant leaves and the yield of spring rapeseed under conditions of forest-steppe of Central Black Earth Region. Method of research. In the course of research, records and observations were made using the method of laying and conducting field experiments, which is generally accepted in agronomic science [3]. The number of chlorophylls a and b and the amount of caratinoids were determined using a spectrophotometric method. Results. Research conducted in the field experience on the basis of the Yelets State University named after I. A. Bunin allowed us to establish the influence of natural zeolite and organic fertilizers on changes in the pigment composition of leaves and productivity of spring rape plants in the rosette and flowering phases. Plants in the flowering phase had the highest photosynthetic potential. It was found that the application of organic fertilizers significantly contributed to the accumulation of chlorophyll a in plants and pigments in General at all the studied phases of development, and their joint use with zeolite led to an increase in crop yield. The maximum increase in yield was obtained in the variant with the introduction of chicken manure 10 t/ha and zeolite 3 t/ha, which was 16.8 c/ha compared to the control. The carried out researches allow to recommend the use of organic waste of poultry farms together with natural zeolite Terbunskiy field in the conditions of forest-steppe of Central Black Earth Region on leached Chernozem under spring rape. Scientific novelty. In the conditions of forest-steppe Central Black Earth Region first determined the optimal application rate of chicken manure and natural zeolite, which contribute to the increase in photosynthetic capacity and pigmentation of plant leaves that allows to obtain high yield and good seed quality.

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