Agroecological assessment of perennial ryegrass varieties in the conditions of the Udmurt Republic

DOI

10.2991/ispc-19.2019.57How to use a DOI?

Keywords

perennial ryegrass, ecological flexibility, winter hardiness, productivity

Abstract

In cultivating field crops, the variability of quantitative characteristics is undoubtedly caused by growing conditions and “genotype × environment” interaction. Combined approach to the consideration of this issue showed that the growth of potential productivity of agricultural crops due to selection and cultivation technology adversely affects the resistance of new varieties and hybrids to the influence of abiotic and biotic stresses. This article describes the problem of adapting perennial ryegrass varieties to the conditions of the Udmurt Republic which is one of the reserves of highquality fodder. These studies were performed on sodstrongly podzolic heavyloam soil. The plowing layer of experimental plots had from low (2.1%) to medium (2.6%) humus content, medium (100-101 mg/kg) mobile phosphorus content, from medium (101 mg/kg) to elevated (170 mg/kg) level of mobile potassium. Exchangeable acidity was from medium-acid (рНКСl = 5.0) to close to neutral (рНКСl = 5.6). Results of this research showed that over four years the highest dry matter yield of 3.5 t/ha was formed on average by Malysh variety. The varieties Malysh and Agat – both of Russian selection – were characterized by high winter hardiness (88.0-89.3%), a slight variability in characteristics was noted for these varieties (variation coefficient 6.9-7.3%) what speaks for their stability. The combination of ecological flexibility (bi = 1.13) and phenotypic stability (S2d = 0.10) of Malysh variety reveals its high adaptive properties.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Sergey Kokonov
AU  - Ivan Temkin
AU  - Tatyana Babaytseva
AU  - Elmira Vafina
PY  - 2019/06
DA  - 2019/06
TI  - Agroecological assessment of perennial ryegrass varieties in the conditions of the Udmurt Republic
BT  - Proceedings of the International Scientific and Practical Conference “Digital agriculture - development strategy” (ISPC 2019)
PB  - Atlantis Press
SP  - 254
EP  - 257
SN  - 1951-6851
UR  - https://doi.org/10.2991/ispc-19.2019.57
DO  - 10.2991/ispc-19.2019.57
ID  - Kokonov2019/06
ER  -