Results 81 to 90 of about 114,172 (248)
Recognition of peat depositional environments in coal: A review
, 2020 S. Dai +13 more
semanticscholar +1 more source
The stoichiometry of carbon and nutrients in peat formation
, 2015 Northern peatlands have stored large amounts (~500 Pg) of carbon (C) since the last glaciation. Combined with peat C are nutrients such as nitrogen (N), phosphorus (P), calcium (Ca), magnesium (Mg), and potassium (K), each of which plays an important ...
Meng Wang +3 more
semanticscholar +1 more source
Results from a soil improvement and fertilizing test on fen land at Leteensuo
Agricultural and Food Science, 1961 Clay and sand, used as soil improving agents, have increased the hay crops as well as the cereal crops. When the fertilization contained phosphates only, the increases in crop yield produced by the soil improvement were quite high.
Yrjö Pessi
doaj
The effect of claying upon the settling of the soil surface on cultivated Sphagnum bogs
Agricultural and Food Science, 1960 The present investigation concerns a Sphagnum bog area that has been under cultivation for 35 years. According to the results, the effect of the claying during this time has been the settling of the surface of the soil on an average 12.5 cm more than in ...
Yrjö Pessi
doaj
Researches on the chemistry of coal VIII—The development of benzenoid constitution in the lignin-peat-coal-series [PDF]
, 1935 William Arthur Bone +3 more
openalex +1 more source
, 2006 The energy necessary to entrain soil in water depends on the soil strength. Once entrained, the settling velocity of the eroded soil in water is of fundamental importance to the processes of sediment transport and deposition. In this paper, stream power theory and transport concepts coupled with the equation of continuity were used to derive a ...
Mulqueen, J. +3 more
openaire +2 more sources
The temperature of peat soil at Leteensuo
Agricultural and Food Science, 1962 The soil temperature at depths of 20, 50 and 100 cm has been higher in the summertime in the cultivated fen soil at Leteensuo than in cultivated Sphagnum peat soil, while the latter again had higher temperatures than Sphagnum bog in its natural state ...
Yrjö Pessi
doaj
ESTIMATION OF RESOURCE-HEALING ROLE LUPINE AND STRAW IN THE GRAIN-ROW CROP ROTATION [PDF]
Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2014 In field experiences on soddy-podzolic sandy soil of Meshchersky lowland high agroeconomic efficiency of an adaptive link of a crop rotation with, grown up on grain, a potato and barley is established, at entering winter wheat straw under lupine .
Tatyana ANISIMOVA
doaj
Agricultural and Food Science, 1960 In the present investigation the significance of claying of cultivated Sphagnum bog was studied from the point of view of the thermal conditions in the soil after a long period.
Yrjö Pessi
doaj