[Effect of flood water on the formation of grasslands in the lower Nemunas]
2000
Katutis, K. (Lithuanian Inst. of Agriculture, Dotnuva (Lithuania))
In 1987-1997 at the Nemunas sector of the Lithuanian Institute of Agriculture experiments were carried out with a purpose to determine the efficiency of flood water concentration on the yield and biogenic matter of flood meadows, soil agrochemical properties and metabolism of biogenic matter in floodded soils. Tests were carried out on various types of soils in the Lower Nemunas. The formation of grasslands in the lowland of the river Nemunas was dependent on the hydrodynamic regimes of the flood in these areas and on the depth of ground water during the vegetative growth season. In the area near the river bed grow wood smal-reed and butter-bur, further from the riverbed-cocksfoot and smooth brome-grass and still further-foxtail and reed canary grass. Sedge, reed sweet-grass and iris grow in the wet part of the lowland. The productivity of flood meadows was from 2 to 7 t/ha. An empirical formula can be used for the calculation of the productivity of different parts of flood meadows in the lowland of the Nemunas [2, 3, 4]
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