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.
The neutral point or balance for soil pH would be 7. As the number of the soil pH increases this indicates an increase in soil alkalinity. As the soil pH number decreases this indicates an increase in soil acidity. The ideal pH for most grass types is 6.5 to 7.0. This would be an optimum pH but different grass types can tolerate a range of pH levels -- see our grass species pH chart below. Note that some grass species such as centipede prefer a more acidic soil with pH levels around 5.0 - 5 ...