Yes sandy loam will work well for a bmx jump just remember if your making small or ever larger dirt jumps you need a good foundation and supports throughout the jump. I've found very helpful that if your jump is under 4 feet tall that stacking even cut logs like a pyramid will work. after that pour a lot of dirt over it, and ALWAYS pack in the dirt very well.
Sandy loam soil provides good drainage for plants, allowing roots to access water and nutrients more easily. It also has good aeration, which promotes healthy root growth. Additionally, sandy loam soil is easy to work with and has a balanced composition of sand, silt, and clay.
Sandy loam soil is typically neutral to slightly acidic in pH. This type of soil has good drainage and a balanced nutrient content, making it suitable for a variety of plants.
A list of Australian plants which grow best in sandy loam can be found at the related link below.
Loam soil is better
Sandy loam
Clay loam soil typically needs more liming compared to sandy loam, loam, and silt loam soils. This is because clay loam soil has a higher proportion of clay particles, which can lead to greater acidity and compaction issues that benefit from liming to improve soil quality.
Celosia grows well in sandy-loam soil.
The 15 types of soil are clay soil, sandy soil, silt soil, peat soil, loam soil, chalky soil, saline soil, acidic soil, alkaline soil, silty soil, black soil, red soil, laterite soil, desert soil, and loess soil.
Sandy loam
Clay soil, Sandy soil, Loam soil.
sandy loam soil
watch your watering