Zobrazeno 1 - 10
of 143
pro vyhledávání: '"S. KUKKONEN"'
Publikováno v:
Agricultural and Food Science, Vol 17, Iss 1 (2008)
Comparative studies have usually shown higher yields in conventional cropping systems (CCS) than in organic cropping systems (OCS). By utilizing a long-term field experiment on silt soil with 18 years of cropping history (19821999), including three O
Externí odkaz:
https://doaj.org/article/c81bad2bd0384c9da7f534186486137f
Publikováno v:
Agricultural and Food Science, Vol 11, Iss 4 (2008)
Worldwide interest in soil quality evaluation has increased rapidly throughout the past decade, prompting us to evaluate the long-term impact of four cropping systems on several biological, chemical and physical determinants of soil quality. We hypot
Externí odkaz:
https://doaj.org/article/68146ea7ba1148bb85bbb65705f242a6
Autor:
V. P. Kostama, S. Kukkonen
Publikováno v:
Icarus. 305:33-49
The availability of very high-resolution images has made it possible to extend crater size-frequency distribution studies to small, deca/hectometer-scale craters. This has enabled the dating of small and young surface units, as well as recent, short-
Autor:
S. Kukkonen, J. Korteniemi
Publikováno v:
Geophysical Research Letters. 45:2934-2944
Autor:
S. Kukkonen, V. P. Kostama
Publikováno v:
Planetary and Space Science. 153:54-71
Niger Vallis is one of the four large outflow channel systems in the eastern Hellas rim region of Mars. Niger, as well as the other nearby valles, is assumed to have been carved by water and later covered by ice-rich deposits. Thus, it plays a signif
Autor:
S. Kukkonen, V. P. Kostama
Publikováno v:
Icarus. 299:46-67
Harmakhis Vallis is one of the four major outflow channel systems (Dao, Niger, Harmakhis, and Reull Valles) that cut the eastern rim region of the Hellas basin, the largest well-preserved impact structure on Mars. The structure of Harmakhis Vallis an
Publikováno v:
Planetary and Space Science. 140:35-48
The large scale outflow channels of the Hellas impact basin are characteristic to its eastern rim region. Although the majority of the valles are located in the large-scale topographic trough connecting Hesperia Planum and Hellas basin, the most far-
Publikováno v:
Acta Horticulturae. :149-158
Autor:
S. Kukkonen, M. Vestberg
Publikováno v:
Acta Horticulturae. :403-410
Growing media based on light peat are commonly used in horticultural production. Although peat possesses a range of positive properties, it may also incur problems. Structural problems are common in long-term use. Light peat has a very low anion exch
Publikováno v:
SIL Proceedings, 1922-2010. 26:502-507