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Effect of shoot extract of T. portulacastrum and herbicide on root anatomical parameters of A. tenuifolius and C. arvensis. L1 = distilled water; L2 = 30%; L3 = 60%; L4 = 100% and L5 = herbicide treatment. Means followed by the same letter did not significantly differ at p ≤ 0.05 according to LSD test.
