Use of grain crops of nitrogen of soil and fertilizers

• Published in: Vestsi Natsyyanal'naj Akadehmii Navuk Belarusi. Seryya Agrarnykh Navuk (Belarus) no. 2; pp. 36 - 42
• Main Authors: Tsybulka, N.N, Zhukova, I.I, Kiseleva, D.V., Institute of Radiology, Mogilev (Belarus)
• Format: Journal Article
• Language: Russian
• Published: 2008
• Subjects: ABONOS NITROGENADOS; APLICACION DE ABONOS; BARLEY; BELARUS; CEBADA; CENTENO; CEREAL CROPS; CULTIVOS DE CEREALES; CULTIVOS DE INVIERNO; CULTURE D'HIVER; DOSAGE; DOSE; DOSIFICACION; EFFICACITE; EFFICIENCY; EFICACIA; ENGRAIS AZOTE; FERTILISATION; FERTILIZER APPLICATION; HORDEUM; http://www.fao.org/aos/agrovoc#c_10795; http://www.fao.org/aos/agrovoc#c_14010; http://www.fao.org/aos/agrovoc#c_2491; http://www.fao.org/aos/agrovoc#c_24917; http://www.fao.org/aos/agrovoc#c_25512; http://www.fao.org/aos/agrovoc#c_33237; http://www.fao.org/aos/agrovoc#c_3660; http://www.fao.org/aos/agrovoc#c_36906; http://www.fao.org/aos/agrovoc#c_5195; http://www.fao.org/aos/agrovoc#c_6044; http://www.fao.org/aos/agrovoc#c_6919; http://www.fao.org/aos/agrovoc#c_823; NITROGEN FERTILIZERS; ORGE; PLANTE CEREALIERE; PODZOL; PODZOLES; PODZOLS; RYE; SECALE CEREALE; SEIGLE; WINTER CROPS
• ISSN: 1817-7204

Use of grain crops of nitrogen of soil and fertilizers Results on the consumption of nitrogen of soil and fertilizers by plants of grain crops (winter rye and barley) are presented. It is established that nitrogen of soil stocks (57 – 75%) prevails in nitric food. Nitrogen of fertilizers is to a greater measure spent for formation of grain rather than of straw. From 75 – 78 (winter rye) to 80 – 84% (barley) of all nitrogen of fertilizers absorbed by plants is concentrated in grain. As the total carrying out of nitrogen of fertilizers is increased the size of its expenses for formation of 100 g of grain grows. At fractional application and with increase in doses of nitric fertilizers their share in the production process raises. Operating ratios of nitrogen of fertilizers fluctuate depending on doses and terms of applying nitric fertilizers from 48 to 62%. Fractional application of nitric fertilizers in comparison with a single one promotes an increase in the operating ratio of nitrogen by 5 – 10%. As doses of applying nitrogen are increased the sizes of its consumption by plants grow, however the operating ratios decrease. Transferring some part of nitric top dressing from the tube exit phase to the flag - sheet phase also leads to a decrease in the size of nitrogen absorption of fertilizers and the operating ratio by 5%