خيارات البحث
النتائج 1 - 6 من 6
Nitrogen balances and leaching in four agricultural catchments in southeastern Norway
1998
Bechmann, M. | Eggestad, H.O. | Vagstad, N. (Jordforsk, Centre for Soil and Environmental Research, N-1432 As (Norway))
Walking behaviour and population density of adult linyphiid spiders in relation to minimizing the plot size in short term pesticide studies with pyrethroid insecticides
1993
Jagers op Akkerhuis, G.A.J.M. (Department of Toxicology, Wageningen Agricultural University, PO Box 8129, 6700 EV Wageningen (Netherlands))
Computer-aided model system N-PROG for estimating the requirements of nitrogen, crop yields and post-harvest nitrogen residues with respect to ecological parameters, economic and crop management factors
1998
Schoop, P. (Institute of Crop Science and Plant Breeding, Christian-Albrechts-University, Kiel (Germany))
Ozone levels in Chongqing: a potential threat to crop plants commonly grown in the region?
1998
Zheng, Y. | Stevenson, K.J. | Barrowcliffe, R. | Chen, S. | Wang, H. | Barnes, J.D. (Air Pollution Laboratory, Department of Agricultural and Environmental Science, Ridley Building, The University, Newcastle Upon Tyne NE1 7RU (United Kingdom))
Analysis of environmental policy measures aimed at reducing nitrogen leaching at the farm level
1998
Hasler, B. (National Environmental Research Institute, Department for Policy Analysis, P.O. Box 358, 4000 Roskilde (Denmark))
Baseline data for cadmium and lead in soils and some cereals of Poland
1991
Kabata-Pendias, A. (Institute of Soil Science and Cultivation of Plants, Pulawy (Poland). Trace Element Lab.) | Dudka, S.
