共 36 条
- [31] USE OF SOIL PROPERTIES TO ESTIMATE SOIL LOSS BY WATER EROSION ON SURFACE-MINED LANDS OF WESTERN NORTH-DAKOTA NORTH DAKOTA FARM RESEARCH, 1976, 34 (02): : 40 - 43
- [32] HISTORY OF SOIL FERTILITY RESEARCH CONDUCTED BY SOIL SCIENTISTS AT NORTH-DAKOTA-AGRICULTURAL-EXPERIMENT-STATION NORTH DAKOTA FARM RESEARCH, 1983, 41 (01): : 18 - 23
- [33] SOIL-WATER GUIDELINES AND PRECIPITATION PROBABILITIES FOR GROWING BARLEY AND SPRING WHEAT IN FLEXIBLE CROPPING SYSTEMS - MONTANA AND NORTH-DAKOTA NORTH DAKOTA AGRICULTURAL EXPERIMENT STATION BULLETIN, 1981, (356): : 1 - +
- [36] MINIMIZING THE RISK OF PRODUCING WINTER-WHEAT IN NORTH-DAKOTA .1. THE EFFECT OF TILLAGE ON SNOW DEPTH, SOIL-TEMPERATURE, AND WINTER-WHEAT SURVIVAL NORTH DAKOTA FARM RESEARCH, 1987, 44 (05): : 9 - 13