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.
Soil Amelioration Sand (Coarse). Soil amelioration sand is a washed, hydrosized sand designed to STRI recommendations for the amelioration of soil. Soil amelioration sand is designed to create a well structured soil with air-filled soil pores, as recommended by STRI for sports pitches...but it works nicely for vegetables too!Gardening books often say 'use sharp sand'.oil amelioration is normally done by blending 2 parts sand to 1 part of soil, the aim being to arrive at a loam (for an exact blend for your particular soil, professional advice should be taken). Our soil amelioration sand has a pH of approximately 8.0.