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Registration Number

0306U008065, 0100U002832 , R & D reports

Title

Agroecological substantiation and agrochemical providing of fertilizers application on meadow -chernozemic soil of the North part of the Forest steppe zone of Ukraine

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Агроекологічне обґрунтування і агрохімічне забезпечення використання добрив на лучно-чорноземних карбонатних ґрунтах Північної частини Лісостепу України

Head

Mykola Gorodniy,

Registration Date

26-09-2006

Organization

National agricultural university of Ukraine.

Description

Object of research. Nature of nutrition regime changes in meadow-chernozemic soil of light loamy granulometrical composition based on the loessy loam and crops yield in cereals-sugar beet crop rotation as a result of 45 years fertilization; scientific agroecological substantiation of fertilizers rates and agrochemical providing of the sustainable yields in crop rotation. Research goal. Scientific substantiation of organic and mineral fertilizers application for 45 years in crop rotation and its influence on plant nutrition improvement and harvest formation of high quality; interrelation of nitrogen, phosphorus, potassium, micronutrients, trace metals and carbon in crop rotation. Methods of investigation. The results of field trails and laboratory analysis were summarized. The crop rotation saturation with fertilizers was 13 t/ha of manure, 252 kg/ha N, Р2О5, К2О (single fertilizers rate together with manure application); 375 kg/ha N, Р2О5, К2О (sesquialteral fertilizers rate together with manure application); 252 kg/ha N, Р2О5, К2О (only mineral fertilizers application). Soil testing, plant analysis, crop quality were run using common in agricultural chemistry methods. Results. Crop production yield increased under the influence of fertilizes in investigation years (1998-2004) and made up 46.4-83.0 dt/ha fodder units as compared with 31.3-51.8 dt/ha without fertilizers application. Application only mineral fertilizers increased yield from 41.6 to 68.6 dt/ha fodder units. Crop rotation saturation with fertilizers increasing till 375 kg/ha N, Р2О5, К2О inexpedient in respect to agrochemical and economical effectiveness of fertilizers application. Joint application of organic and mineral fertilizers (13 t/ha of manure and 252 kg/ha N, Р2О5, К2О) provides positive nitrogen, phosphorus and potassium balance, increases nutrient content and crop yield in crop rotation. Decreasing of crop rotation saturation with manure to 12 t/ha, with mineral fertilizers to 238 and 359 kg/ha N, Р2О5, К2О causes tendency to nutrients content decreasing in soil and crop yield reduction. Branch of use - agriculture.

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