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РАСТЕНИЕВОДСТВО И ЗЕМЛЕДЕЛИЕ
ͪКормопроизводствоͫ № 4, 2015
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INFLUENCE OF MINERAL FERTILIZERS ON GRAIN PRODUCTIVITY AND QUALITY
OF FORAGE BARLEY AND HULLESS OATS
V. D. Abashev, Dr. Agr. Sc.
L. M. Kozlova, Dr. Agr. Sc.
E. V. Svetlakova
North-East Research Institute of Agriculture
610007, Russia, Kirov, Lenina str., 166a
E-mail:
The field trials of different rates and proporƟons of mineral ferƟlizers were conducted on sod-podzolic clay loam
on the residual Permian clays. Different rates of mineral N, P and K ferƟlizers were studied in triple-established
field staƟonary trial started by N. G. Surovtsev in 1972–1974. It is a part of the Geographical Network of Agrichem-
ical Trials. The design is a sampling of the full factorial experiment, it includes 54 variants. This arƟcle deals with
22 of them. The studies took place on hulless oats and barley in the 6th and the 7 th rotaƟon of the grain, fallow and
grasses crop rotaƟon. Hulless oats was culƟvated aŌer spring wheat following red clover. Barley with red clover
was culƟvated aŌer winter rye. Ammonium nitrate, double superphosphate and potassium chloride were applied.
Mineral ferƟlizers were spread before spring preplanƟng culƟvaƟon. No lime or organics were used. It was found
that mineral ferƟlizaƟon being higher, oats and barley producƟvity increased. Their producƟvity was mostly de-
pendent on N and P ferƟlizers and their interacƟon. Potassium had a significant effect on yield increment in com-
binaƟon with N only. A three-year average oats yield increase due to the ferƟlizers was 1.29–2.79 tons ha-1 while
the reference variant gave 1.18 tons ha-1. Barley yield increment was 0.95–2.21 tons ha-1 , the reference being
1.4 tons ha-1. The plots ferƟlized with Р60, Р60К60, К60 and К120 were an excepƟon with a staƟsƟcally insignificant
difference. The best ferƟlizaƟon rate for hulless oats cv. “Vyatskiy ” and barley cv. “Abava” on sod-podzolic clay
loam was N90Р 90К90, oats yield reaching 3.56 tons ha-1 , and barley — 3,41 tons ha-1, thus exceeding the unferƟlized
plots 3 and 2.4 Ɵmes. The best oats grain return for 1 kg of ferƟlizer was provided by minimal rates: N60 — 28.3 kg;
N60Р60 — 17.2 kg; N30Р30К30 — 14.32 kg. The best barley grain return for 1 kg of ferƟlizer was the following: N60 —
15.8 kg; N60Р60 — 13.4 kg; N30Р30К 30 — 11.6 kg. Nitrogen provided higher protein and lower starch content in bar-
ley grain. Phosphorus and potassium ferƟlizers had no effect on grain quality.
Keywords: oats, barley, producƟvity, sod-podzolic soil, ferƟlizer, grain return of ferƟlizaƟon, grain quality.
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