Nutrient removal and payback of mineral fertilizers by harvest of winter wheat varieties under technologies of different intensity levels

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Abstract


Nutrient removal and payback of mineral fertilizers by harvest of winter wheat varieties were studied under technologies of different intensity levels in 2012-2015. The design of the experiment included three fertilizer systems divided into three yield levels (6, 8 and 10 t/ha) adjusted for the actual content of mobile phosphorus and potassium in the soil. Samples of grain and straw were taken for each variety and technology before harvesting, nutrient content was determined. Calculation of nutrient removal was carried out at 14% moisture. Nutrient removal and payback of fertilizers by harvest of winter wheat varieties depended on genetic characteristics and cultivation technology. Nemchinovskaya and Moskovskaya varieties had the highest (17-29 kg/kg) and the lowest (39-21 kg/kg) fertilizer payback, respectively, in high-intensity technology. The lower the stem height, the lower the nutrient removal. The sum of fertilizers (NPK) used by Nemchinovskaya 24 variety was 210 kg/ha in standard technology, 330 kg/ha in intensive technology, and 450 kg/ha in high-intensity technology. Lower fertilizer costs were noted on average over the research years. Increasing intensity of technology - from standard to high-intensity - resulted in increased nutrient removal and fertilizers costs, and their payback decreased.


About the authors

Nazih Yasser Rebukh

Federal research center “Nemchinovka”

Author for correspondence.
Email: n.rebouh@outlook.fr
Moscow region, Russian Federation

postgraduate student, laboratory of varietal technologies of winter grain crops

Petr Mikhailovich Polityko

Federal research center “Nemchinovka”

Email: niicrnz@mail.ru
Moscow region, Russian Federation

Doctor of Sciences in Agriculture, Professor, Head of the Laboratory of Varietal Technologies of Winter Grain Crops

Vladimir Nikolaevich Kapranov

Federal research center “Nemchinovka”

Email: niicrnz@mail.ru
Moscow region, Russian Federation

Doctor of Sciences in Agriculture, Leading Researcher, Laboratory of Varietal Technologies of Winter Grain Crops

Evgeny Fedorovich Kiselev

Federal research center “Nemchinovka”

Email: niicrnz@mail.ru
Moscow region, Russian Federation

Candidate of Sciences in Agriculture, Leading Researcher, Laboratory of Varietal Technologies of Winter Crops

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Copyright (c) 2019 Rebukh N.Y., Polityko P.M., Kapranov V.N., Kiselev E.F.

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