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Written Paper

Adaptive ability and stability of winter grain crops cultivated in сlimate and soil conditions of Perm region  [2015]

Nevolina, K.N., Perm Research and Development Inst. of Agriculture, Perm Krai (Russian Federation)

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The parameters of adaptive capacity and stability of a new for Preduralie grain culture — winter triticale, - were studied in comparison with winter rye and winter wheat. Experiments were conducted in 2012-2014 in Perm region. The soil of an experimental site was cultivated sod-podzolic heavy loam one. Black fallow was the predecessor. Rates of mineral fertilizers (without fertilizers, P60K60 background, background + N30, background + N30+30 background + N30+60) and crop were the factors. The following indexes were determined: standard deviation, coefficient of linear regression, coefficient of variation, which show culture capacity to answer to improvement of growing conditions by increase of crop yield. Proposed parameters of adaptabilty and stability give opportunity to foresee response of the crop to production conditions. Average yield of winter triticale was 4.85 t/ha, winter wheat — 4.29 t/ha, winter rye — 3.85 t/ha. The optimum doses of fertilizers, providing not less than 4 t/hectare of winter wheat and rye and not less than 5 t/hectare of triticale, are N30+30 P60K60. Triticale didn't concede rye and surpassed wheat by adaptability and stability of productivity. It is recommended to include all mentioned cultures in a crop rotation under production conditions.

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Agrarian Science

ISSN : 0869-8155