Ultisols vary in color from purplish-red, to a bright reddish-orange, to pale yellowish-orange and (in cooler areas such as Pennsylvania) even some subdued yellowish-brown or grayish-brown tones. They are … 查看更多內容

• Aquults: Ultisols with a water table at or near the surface for much of the year
• Humults: well-drained Ultisols that have high organic … 查看更多內容

The lack of organic matter in Ultisol makes it difficult for plants to grow without proper care and considerations. Soil amendments are generally required each year in order to sustain plant life in regions with primarily Ultisol soil. The use of soil tests, coupled with the … 查看更多內容

• Pedogenesis
• Pedology (soil study)
• Soil classification
• Red Soil 查看更多內容