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.
CLOVER SPECIES ARROWLEAF CLOVER is a high yielding and late maturing annual clover with growth into early June under good moisture conditions. Hard seed percentage is about 90% so it has good reseeding potential. Early planting enhances stand establishment. Soil pH is critical to growth and production of arrowleaf clover. Acid soils should be limed to at least pH 6.0 to 6.5 before establishment of this clover.