THE CONSUMPTION OF NITROGEN FROM SOIL AND PRODUCTIVITY OF SPRING DURUM WHEAT IN FALLOW LANDS OF THE ORENBURG ZAURALYE
Abstract
For the first time we have received the results for the cultivated virgin lands of the Orenburg Zauralye, which characterized the changeability of nitrogen consumption from the root layers of soil at different depth, its effect on productivity of spring durum wheat. It has been determined that when the crop is cultivated in the fallow black earth lands with alkalinity, the nitrogen consumption from different soil layers (up to1 m) during its vegetation can vary from 65.99-80.57% till 87.16-93.14% and from 57.43 and 45.18% in the layers of 0-30cm, 30-60cm and 60-100cm respectively in fallow lands without fertilizing and in fallow lands with fertilizing of P40 kg/ha. The average amounts of nitrogen consumption from the soil layers were 117.74, 115.22 and174.48 kg per ha without fertilizing; 116.93, 104.18 and172.87 kgper ha with phosphorus fertilizing; the maximum values of 276.72, 295.85 and369.14 kgper ha and 327.6, 313,99 and322.68 kgper ha respectively. The optimum amounts of nitrogen consumption to receive the most productivity were in the fallow lands without fertilizing: in the layer of 0-30cm – 79.26kg/ha (3.13 t/ha), in the layer of 30-60cm – 50.3kg/ha (3.20 t/ha), in the layer of 60- 100cm – 64.54kg/ha (3.25 t/ha) (ɳух=0.880-0.968). The optimum amounts of nitrogen consumption to receive the largest amount of productivity were in the fallow lands with phosphorus fertilizing: in the layer of 0-30cm – 33.07 kg/ha (3.50 t/ha), in the layer of 30-60cm – 0.01kg/ha (3.71 t/ha), in the layer of 60-100cm – 98.13kg/ha (3.26 t/ha) (ɳух=0.955-0.975). The increase of nitrogen consumption up to maximum values was accompanied with the decrease of productivity till 1.94-2.42 t/ha in fallow lands without fertilizing and till 2.60-2.41 t/ha. The phosphorus fertilizing of fallow lands is necessary, but the use of nitrogen is beside the purpose.
About the Author
A. G. Kryuchkov
FSBSI “Orenburg RI of Agriculture”
Russian Federation
Russian Federation
Doctor of Agricultural Sciences, professor
460051, Orenburg, Gagarin Pr. 27/1
References
1. Sandakova, G.N. Scientific substantiation of the areas of optimal location of production and deep processing of high-qualitative grain of spring wheat in the steppe of the Sourth Urals / G.N. Sandakova, A.G. Kryuchkov. – ООО ‘Agency “Pressa”, Orenburg, 2012. – 224p.
2. Kryuchkov, A.G. Durum wheat (modern cutivation technologies) / A.G. Kryuchkov, P.P. Teykhrib, A.N. Popov - ООО ‘Orenburg Book Publ.’, Orenburg, 2008. – 704p., 60 pic.
3. The system of agriculture in the Orenburg region. – Chelyabinsk; Sourth Urals Publ., 1981, 300 p. with pic.
4. Agrochemistry. Issue 3-d, app. and add. Edited by professor P.I. Smirnova, A.V. Peterburgsky. – М.: Kolos, 1975. – 512 p. with pic.
5. Pannikov, V.D. Soil, climate, fertilizing and yield / V.D. Pannikov, V.G. Mineev. – М.: Kolos. – 416 p. with pic.
Review
For citations:
Kryuchkov A.G. THE CONSUMPTION OF NITROGEN FROM SOIL AND PRODUCTIVITY OF SPRING DURUM WHEAT IN FALLOW LANDS OF THE ORENBURG ZAURALYE. Grain Economy of Russia. 2016;(5):70-72. (In Russ.)
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