Open AccessSTUDYING PARAMETERS OF SEED GRASS STAND OF PANNONIAN CLOVER (Trifolium pannonicum Jacq.) VARIETY 'SNEZHOK' AT LONG-TERM USE OF SOWING IN THE CONDITIONS OF THE KIROV REGION
Author(s) -
Е. В. Попова,
М. Н. Грипась,
Е. Г. Арзамасова
Publication year - 2019
Publication title -
adaptivnoe kormoproizvodstvo
Language(s) - English
Resource type - Journals
ISSN - 2222-5366
DOI - 10.33814/afp-2222-5366-2019-4-15-26
Subject(s) - sowing , agronomy , productivity , biology , yield (engineering) , dry matter , cultivar , growing season , materials science , economics , macroeconomics , metallurgy
The article presents results of study of biological features of pannonian clover 'Snezhok' (created in the Federal Agricultural Scientific Center of North-East) at long-term use of a reproduction nursery (2011 sowing) for seeds. The soil-climatic conditions of research, the used material and assessment methods are described. The duration of periods of above-ground mass formation, height of plants, structure of stand and seed yield are determined. An elongation of the period from regrowth to the beginning of flowering with increasing of the stand's age was noted. The height of plants, yield of green mass and dry matter in the phase of head and seed ripening increased with the age of the grass stand. An increase in the number of generative stems, heads and mass of seeds per head was also observed. The level of seed productivity of pannonian clover depended more on the age of the grass stand than on the weather conditions of the growing season. We found that the potential seed productivity in favorable years can reach 8.48 kg/ha, while the actual seed yield on average over the years of research was 1.29 kg/ha, with fluctuations from 0.71 (2017) up to 4.63 kg/ha (2015).