The pH before planting is the most important when it comes to crop analysis. There is a great reactions that occur between the soil and crop that has alot to do with the composition when analysed.
The PH before planting should be most important. This is because it determines the performance of crops which in turn tell on the harvest from the crop. Although I still seek to know which is more critical for yield between the PH of the soil and the looseness of the soil.