Table Of Content

Soil & Tillage Research, 19 (1991) 435-437 Elsevier Science Publishers B.V., Amsterdam Contents of Soil & Tillage Research, Volume 19 VOL. 19 NO. 1 JANUARY 1991 Computed reconstruction of field traffic patterns J.C. van de Zande (Wageningen, The Netherlands ) A comparison of estimates of soil erosion made in the field and from photographs A. Watson (Kincardineshire, Gt. Britain) and R. Evans (Cambridge, Gt. Britain) Conservation and contour tillage for corn and soybeans in the Tama silt loam soil: the hydrologic response G.F. Mclsaac, J.K. Mitchell, M.C. Hirschi and L.K. Ewing (Urbana, IL, U.S.A.)............ 29 Effect of tillage on rainfed maize and soybean yield and the nitrogen fertilizer requirements for maize K. Thiagalingam, N. Gould and P. Watson ( Berrimah, N.T., Australia) Effect of different tillage practices, mulch and nitrogen on soil properties, growth and yield of fodder maize B.R. Sharma ( Faizabad, India) An economical hand-held recording penetrometer E. Rawitz and M. Margolin (Rehovot, Israel) Influence of mixed cropping rotations (pasture—-arable )o n organic matter content, water stable aggregation and clod porosity in a group of soils R.J. Haynes, R.C. Stephen and R.S. Swift (Canterbury, New Zealand ) Short Communication Water-suspensible solids and structural stability I.M. Young (Dundee, Gt. Britain) and C.E. Mullins (Aberdeen, Gt. Britain) VOL. 19 NOS. 2-3 FEBRUARY 1991 Guest Editorial Soil compaction as a factor determining plant productivity J. Glitiski, H. Domzat and J. Lipiec (Lublin, Poland) Invited Papers Soil compaction research in Poland H. DomZal, J. Glitiski and J. Lipiec (Lublin, Poland) Effect of soil compaction on root development H.M. Taylor and G.S. Brar (Lubbock, TX, U.S.A. ) .........:..cccccscseeeeseneeeneneeeeeneneneneneennsnenes 111 Water and nutrient management in sandy soils by compaction R.P. Agrawal (Haryana, India) Effects of wheel and track traffic on the soil and on crop growth and yield i, I II, Ge UIs Bhs c srersirneosincinstsssimisisssisisniionininieceiniadinnnadialaniniiiniinnenenbimnanes 131 Factors and indices regarding excessive compactness of agricultural soils A. Canarache (Bucharest, Romania) 436 Voluntary Papers Correction of data measured in a shear box Z. Balassy (G6d6I16, Hungary ) Effect of compaction on soil air in a pot experiment and in the field A. Simojoki, A. Jaakkola (Helsinki, Finland )a nd L. Alakukku (Jokioinen, Finland) ... Poster Papers Deformation of silty loam soil under the tractor tyre A.A. Okhitin, A.V. Sudakov (Leningrad, U.S.S.R.), J. Lipiec and S. Tarkiewicz (Lublin, Poland ) Depth indicators method for determination of bulk density dynamics S. Witodek (Jelcz-Laskowice, Poland ) Effect of aggregate stability on soil compaction Th. Baumgartl and R. Horn (Kiel, F.R.G. ) .............:cccccsccessecceeceeeeseeceeseceeceeceeeeeceeseeceeeeers 203 The structure of the cultivated horizon of soil compacted by the wheels of agricultural tractors A. Stowinska-Jurkiewicz and H. Domzat (Lublin, Poland) Physical properties of three soils compacted by machine wheels during field operations H. Domzat and J. Hodara (Lublin, Poland) Physical and chemical properties of brown earths developed from boulder clay in Western Pomerania under arable farming, apple-tree orchard and deciduous forest, as affected by soil compaction ic eee I, SUITIRIIIIT ss censtinbnatnoocutouiasinanbebentnnnsbeuesbenseenspsennsedenes 237 The structure of the cultivated horizon of a Stagnogleyic Luvisol developed from loam, within the zone affected by tractor wheel traffic A. Stowinska-Jurkiewicz and H. DomZaf (Lublin, Poland ) A preliminary study on the durability of the effects of compaction on a brown soil developed from loess J. Hodara and H. DomiZa} (Lublin, Poland) Mechanized agriculture and soil compaction in Céte d’Ivoire A. Yao-Kouame and G. Yoro (Abidjan, Céte d'Ivoire) A method to predict the mechanical strength of agricultural soils Be Sn IN UNE, SLUR IED D cccsinccccocossenntsesasvensssnssunsbouressenmnnsssnssseovsossenstpsurbonstses 275 Degradation of soil by increasing compression J. Lhotsky, P. Beran, P. Paris and L. Valigurska (Zbraslav, Czechoslovakia ) Effect of application of pig slurry on soil penetration resistance and sugar beet emergence J. De Smet, M. De Boodt, R. Hartmann (Ghent, Belgium) and J. Wontroba (Lublin, Poland ) Soil physical properties and growth of spring barley as related to the degree of compactness of two soils J. Lipiec, S. Tarkiewicz, J. Kossowski (Lublin, Poland ) and I. Hakansson ( Uppsala, Effect of compaction simulating cattle trampling on soil physical characteristics in woodland A.F. Ferrero (Turin, Italy) Tree growth on a compacted Oxisol R.J. Cheatle (Honiara, Solomon Islands) Effect of loosening and compacting on soil physical properties and sugar beet yield J. Pabin, J. Sienkiewicz and S. Wtodek (Jelcz-Laskowice, Poland ) Influence of subsoil compaction on the uptake of “°Ca from the soil profile and on maize yield K. Gediga (Jelcz-Laskowice, Poland) Mathematical modeling of biological activity in differently compacted soils J. Malicki, A. Bieganowski and M. Dgbek-Szreniawska (Lublin, Poland ) VOL. 19 NO. 4 MARCH 1991 Tillage implement disturbance effects on soil properties related to soil and water conservation: a literature review P.W. Unger (Bushland, TX, U.S.A.) and D.K. Cassel (Raleigh, NC., U.S.A. )............... 363 Hardsetting and structural regeneration in two unstable British sandy loams and their influence on crop growth I.M. Young, C.E. Mullins, A.G. Bengough (Aberdeen, Gt. Britain) and P.A. Costigan (Warwick, Gt. Britain) ISTRO-INFO