Open AccessEvaluation of long-term pasture chemical composition and productivity
Author(s) -
Л П Байкалова,
И. А. Горбачев,
Yu F. Yedimeichev,
А И Машанов,
S. G. Smolin,
Н А Табаков
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/421/5/052020
Subject(s) - pasture , agronomy , perennial plant , grazing , dry matter , phosphorus , productivity , festuca , steppe , legume , biology , environmental science , chemistry , poaceae , ecology , organic chemistry , economics , macroeconomics
The assessment of perennial legume-grass plants for pasture purposes was carried out on the basis of data from field experience conducted in the forest-steppe of Krasnoyarsk region and data from a qualitative analysis of pasture grass mixtures. The content of macronutrients: calcium, phosphorus, magnesium; green mass yield, collection of dry matter and feed units in three grazing cycles were determined. The chemical composition and productivity of pastures were depended on the type of grass, the cycle of grazing and the composition of the mixture. It was noted an increase in the calcium content in grass mixtures by 3.2-3.9 times to the control of red fescue. The phosphorus content in pasture feeds was at the control level. A higher content of magnesium in comparison with the control was found in the herbal mixture of brome + cat’s-tail grass + red fescue + goat’s-rue + clover. A grass mixture of brome + cat’s tail grass + red fescue + lucerne was the best in terms of yield of green mass, collection of dry matter and feed units.