NITROGEN FIXATION OF PEA VARIETIES OF NEMCHINOVKA SELECTION IN DEPENDENCE ON FERTILIZERS ON SOD-PODZOLIC SOIL OF THE CENTRAL NON- BLACK EARTH REGION AND CONTRIBUTION OF FIXED NITROGEN INTO SMALL BIOLOGICAL CYCLE
2019
Kononchuk, V.V. | Shtyrhunov, V.D. | Blagoveschenskij, G.V. | Timoshenko, S.M. | Sobolev, S.V. | Nazarova, T.O.
On the moderately cultivated sod-podzolic soil of the centre of Nonchernozem zone of the Russian Federation yield of haylage and grain of peas-wheat mixtures 4,6-8,4 t/ha and 2,4- 3,4 tons/ha (89 to 100% of maximum achieved) was achieved by introducing Р80К110 and N30Р80К110 depending on composition, grain yield of pure crops of peas and maple pea in this case achieved 3,2-4,2 t/ha (86-100%). These options and crop residues into arable layer additionally come 60- 130 kg/ha of symbiotic fixed nitrogen (KF 0,39-0,74) with the enrichment of the soil 12-73 kg/ha. Estimated increase of possible grain yield of subsequent winter wheat from Nbiol. can reach 6-10 t/ha.
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