1. Central Soil and Water Conservation Research and Training Inst.; Research Centre; Sector 27-A, Madhya Marg Chandigarh 160019 India
2. Central Soil Salinity Research Inst.; Karnal 132 001 India
3. Institüt für Bodenkunde; Herrenhäuser Str. 2 D-3000 Hannover 21 Federal Republic of Germany