es ELSEVIER Soil & Tillage Research 43 (1997) 357-358 Contents of Soil & Tillage Research, Volume 43 Vol. 43 Nos. 1,2 October 1997 I 2 ke oe a ok le CAC SO ee Ea SO OE Ow S68 eo 1 ee e© e es I Is oi i he ae Mew we eee eee ns 5 Soil tilth-the desired soil structural state obtained through proper soil fragmentation and reorientation processes i a ig ge oi id kk AR Red ee 7 Physical properties of tilled soils en es ha ag Ae ce ig 5k as ae we le a ee ee 41 Soil and crop responses to soil tillage systems: a Polish perspective L. Malicki (Lublin, Poland), J. Nowicki and Z. Szwejkowski (Olsztyn-Kortowo, Poland) ...... 65 Residue management, conservation tillage and soil restoration for mitigating greenhouse effect by CO,-enrichment an Sg a ga Wise nh a aw ee I 81 Socio-economics of alternative tillage systems kskca we ala A aea ee we Ree 109 The role of soil organic matter in maintaining soil quality in continuous cropping systems eeaig 4 eK Ae BE Oe ee a eS 131 Soil management in perennial crops: orchards and hop gardens SCs ae a I ok oo hk Se ee eh ONO eee ea oe 169 Experience in developing erosion resistant agrolandscapes on large watersheds (a case study from the Ukraine) V.¥. Medvedev and S.Y. Bubvsin Giharkiv, Ukraine). . 0 cece 185 Vol. 43 Nos. 3,4 November 1997 Effect of design parameters of flat tillage tools on loosening of a clay soil E. McKyes (Ste. Anne de Bellevue, Canada) and J. Maswaure (Harare, Zimbabwe) ......... 195 Correction of cone index for soil water content differences in a coastal plain soil W.J. Busscher, P.J. Bauer, C.R. Camp (Florence, SC, USA) and R.E. Sojka (Kimberly, ID, USA) . 205 Effect of deep tillage on soil physical characteristics and corn (Zea mays L.) root growth and production E.C. Varsa, S.K. Chong, J.O. Abolaji, D.A. Farquhar and F.J. Olsen (Carbondale, IL, USA).... . 219 Effect of tillage and contour diking on sorghum establishment and yield on sandy clay soil in Sudan Se ee ar ar 229 Effects of deep tillage under rainfed agriculture on production of sorghum (Sorghum biocolor L. Moench) intercropped with green gram (Vigna radiata L. Wilczek) in western India K.C. Laddha and K.L. Totawat (Arjia-Bhilwara, India)... 0... 2. cece cree eee eees 241 Earthworm channels in cultivated clayey and loamy Norwegian soils . T.E. Sveistrup (Tromsg, Norway), T. Knapp Haraldsen and F. Engelstad (As, Norway) ....... 358 Contents of Soil and Tillage Research, Volume 43 Barley, canola and wheat production under different tillage—fallow—green manure combinations on a clay soil in a cold, semiarid climate M.A. Arshad and K.S. Gill (Beaverlodge, Canada)... 2... 2... eee ee ee ee ee ees 263 Influence of tillage, crop rotation and nitrogen fertilization on soil organic matter and nitrogen under rain-fed Mediterranean conditions L. Lopez-Bellido (Cordoba, Spain), F.J. Lopez-Garrido (Ciudad Real, Spain), M. Fuentes, J.E. Castillo (Cordoba, Spain) and E.J. Fernandez (Almeria, Spain) 277 Wear of symmetrical wedge-shaped tillage tools 5g ae a ogo y acn, % 89 el SR KL ee ee oe ke 295 Effects of trench planting and soil chiselling on soil properties and citrus production in hilly ultisols of China J. Lu (Hangzhou, China), M.J. Wilson (Aberdeen, UK) and J. Yu (Hangzhou, China) 309 2 © © © © © @ Evaluation of fallow management practices in a rainfed vertisol of peninsular India R. Selvaraju and C. Ramaswami (Tamil Nadu, India) .......2..000.0 .ee .ee .ee e 319 Assessing the compaction susceptibility of South African forestry soils. II. Soil properties affecting compactibility and compressibility C.W. Smith, M.A. Johnston and S. Lorentz (Scottsville, South Africa) Author Index oe © © © © © © © © © © © © © © © © © © © © © © © © © © © © © © © © #© © © © © © © © © © © #© @© @ eo 28 © © © © © © © © © © © © © © © © © © © © © © © © © © @ heen stb