Table Of Content

ELSEVIER Soil & Tillage Research 39 (1996) 261-262 Contents of Soil and Tillage Research, Volume 39 Vol. 39 Nos. 1,2 15 November 1996 Soil organic matter pools with conventional and zero tillage in a cold, semiarid climate A.J. Franzluebbers (Watkinsville, GA, USA) and M.A. Arshad (Beaverlodge, Alta., Canada) ... . The energy efficiency of seedbed preparation following mouldboard ploughing W.C.T. Chamen, R.E. Cope, DJ. Longstaff, D.E. Patterson and C.D. Richardson (Bedford, UK) . . Weeding method and pre-sowing tillage effects on weed growth and pearl millet yield in a sandy soil of the West African Sahelian zone M.C. Klaij (Niamey, Niger) and W.B. Hoogmoed (Wageningen, Netherlands) The effect of matric suction on stress—strain relation and strength of three Alfisols K.P. Panayiotopoulos (Thessaloniki, Greece) Draft—speed relationship of simple tillage tools at high operating speeds R.L. Kushwaha (Saskatoon, Sask., Canada) and C. Linke (Stuttgart, Germany) Zero-tillage for rice production on Cameroonian Vertisols R. Ambassa-Kiki (Yaounde, Cameroon), Y. Aboubakar and T. Boulama (Garoua, Cameroon). . . . Spatial variability of soil thermal properties in cultivated fields B. Usowicz, J. Kossowski and P. Baranowski (Lublin, Poland) Residue management for irrigated maize grain and silage production D.K. Cassel and M.G. Wagger (Raleigh, NC, USA) Runoff and sediment loss from three tillage systems under simulated rainfall J.L. Myers and M.G. Wagger (Raleigh, NC, USA) Vol. 39 Nos. 3,4 3 November 1996 Effects of mouldboard ploughing and direct planting on yield and nutrient uptake of potatoes in Norway E. Ekeberg and H.C.F. Riley (Nes pA Hedmark, Norway) Carbohydrate composition in relation to structural stability, compactibility and plasticity of two soils in a long-term experiment B.C. Ball (Edinburgh, UK), M.V. Cheshire (Aberdeen, UK), E.A.G. Robertson (Penicuik, UK) and E.A. Hunter (Edinburgh, UK) Critical state parameters from intact samples of two agricultural topsoils M.F. O'Sullivan and E.A.G. Robertson (Penicuik, UK) Do effects of soil compaction persist after ploughing? Results from 21 long-term field experiments in Sweden J. Arvidsson and I. Hakansson (Uppsala, Sweden) Effect of soil characteristics, seeding depth, operating speed, and opener design on draft force during direct seeding B.A. Collins and D.B. Fowler (Saskatoon, Sask., Canada) Tillage, mulch and irrigation effects on corn (Zea mays L.) in relation to evaporative demand K.S. Gill, P.R. Gajri, M.R. Chaudhary and B. Singh (Ludhiana, India) 262 Contents of Soil and Tillage Research, Volume 39 Soil-profile distribution of primary and secondary plant-available nutrients under conventional and no tillage A.J. Franzluebbers (Watkinsville, GA, USA) and F.M. Hons (College Station, TX, USA) Tillage and application effects on herbicide leaching and runoff D.W. Watts (Florence, SC, USA) and J.K. Hall (University Park, PA, USA) Author Index