Fig. 3. Effect of soil pH on root emergence across time from soil into agar of Brown Loam (BL) and the acid-soil-resistant Cycles 1 and 2 (BL-ASR₃₃-C1, BL-ASR₁₇-C1, BL-ASR₉-C1, and BL-ASR₁₀-C2) and Al-susceptible Cycle 1 (BL-AlS₃₃-C1) white clover populations derived from it. Standard error bars are shown for two populations but apply to all populations.