Pregnancy Weight Gain: Facts. 1  For women who were a normal weight before pregnancy with a BMI of 18.5-24.9 the recommended weight gain guideline is 25-35 pounds. 2  Women who are underweight pre-pregnancy with a BMI of less than 18.5 should gain between 28-40 pounds unless your health care provider says differently.
Tilth generally refers to the physical condition of the soil as it relates to plant growth. Favorable tilth implies good conditions for seed germination and root proliferation, allowing crops to thrive.
In addition, amending soils to achieve a proper organic matter content can improve water retention and drainage. In potting soil, compost provides a favorable texture to the mix, and the organic matter it contains can release nutrients more slowly over the course of a season.