I don't think petite is a height so much as a body shape. I have seen tall women shopping in the petite section because they have a short waist or shorter arms or wanted a skirt that fits them better than the regular ones, and I have seen smaller women shopping in the junior/misses/womens section for similar reasons.
Sweet clover needs a high pH, 6.0 or higher, for proper nodulation to occur, and it has a higher calcium requirement as well. Sweet clover is able to obtain phosphorus from relatively unavailable soil phosphates and will grow on soils where alfalfa, red clover or ladino will fail.
Acidity and basicity are measured on a pH scale of 1 to 14. A pH of 7 is considered neutral, lower numbers are acidic and higher numbers are basic. Depending on a soilâs pH some nutrients may or may not be able to be absorbed by plants. The ideal soil pH for nutrient uptake is slightly acidic at about 6.8 on the pH scale. For optimum uptake of nutrients, soils that are not around 6.8 should be amended, or at least improved some.