Uman NUH | today: 09/29/2020

SOIL NUTRIENT REGIME AND SUGAR BEET YIELD AFTER LONG-TERM APPLICATION OF FERTILIZERS IN CROP ROTATION

Author(s) Martyniuk A. T. , PhD of Agricultural Sciences, , Uman National University of Horticulture
Category 201 "Agronomy"
year 2020 issue №1, 2020
pages 42-46 index UDK 633.63 : 631.559
DOI 10.31395/2310-0478-2020-1-42-46 (Link)
Abstract The article presents the findings of the study on nutrient regime of podzolic black soil after long-term use of various doses of organic and mineral fertilizers in the conditions of organic, mineral and organomineral fertilizer systems application in field crop rotation. The study was conducted in a stationary field experiment, established in 1964 at the experimental field of the Uman National University of Horticulture, located in the Right-Bank Forest Steppe of Ukraine. Studies have established a decrease in mobile nutrients in podzolic black soil after long-term (over 53 years) cultivation of field crops grown in rotation without fertilizers. With an average annual application of 13.5 t / ha of manure and mineral fertilizers in a dose of N68P101K54 per 1 ha into crop rotation area, the highest nitrogen content of easily hydrolyzable and mineral compounds was with an organomineral fertilizer system and averaged 139 and 36.9 mg / kg of soil over three years, respectively. The highest content of mobile phosphorus in the soil was provided by application of mineral fertilizers into crop rotation area at a dose of N135P135K135 (221 mg / kg) per hectare for mineral system and 13.5 t of manure per hectar + N68P101K54 (242 mg / kg) for organomineral fertilizer system. Long-term use of mineral and organic fertilizers in crop rotation increased the content of exchangeable potassium in the podzolic soil by 21-69%. Among the studied fertilizer systems in the field crop rotation, the highest yield (42.8–57.8 t / ha) of sugar beet was provided by the organomineral system. On average, over four years of research, the highest root crop yield (53.1 t / ha) was obtained when applying under. sugar beets 45 t / ha of manure and mineral fertilizers in a dose of N90P202K45 at the third saturation level of crop rotation (manure 13.5 t / ha + N68P101K54).
Key words nutrient regime, podzolic black soil, manure, mineral fertilizers, field crop rotation, sugar beet
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