Moreover, the new plants were heavily dependent on the petrochemical industry for fertilizers, so that in the 1970s, when oil prices soared, so did the price of fertilizers, with the result that poorer farmers, who previously had at least eked out a living from the land, were now driven from it.

句中so that in the 1970.....from it 是一个目的状语从句；

在其中when oil prices soared 引导定语从句，

with the result that poorer farmers....drivenfromit 是 so did the price of fertilizers的伴随状语，这样分析对吗？？