This booklet tells why organic matter in the soil may be considered our most important national resource. The author describes how it furnishes fuel for bacterial wrecking crews and how it is turned into plant nutrients. He shows that many of our farm practices have enormously reduced the supply originally present in the soil and warms that we must expect a permanently lower level of agricultural efficience if we do not take steps to counteract this waste. The problems involved in maintaining an adequate supply of organic matter in the soil are dealt with from a practical standpoint.
出版物详细信息
- 出版者: The New Farm
- Dewey Decimal: 631.8
- ECHO 图书馆: 631.8 ALB