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Table 1 I50 of aqueous methanol extracts of B. brizantha shoots harvested in June, October and January on root and shoot growth of cress, lettuce, P. pretense and L. multiflorum

From: The seasonal variations of allelopathic activity and allelopathic substances in Brachiaria brizantha

  I50 (mg equivalent extract/mL)
June October January
Cress
 Root 4.5 6.3 19.8
 Shoot 2.8 4.9 22.3
Lettuce
 Root 2.5 4.5 55.7
 Shoot 6.3 7.9 25.3
P. pratense
 Root 1.8 2.5 23.7
 Shoot 4.4 4.7 122.5
L. multiflorum
 Root 4.9 7.2 123.5
 Shoot 9.8 13.8 211.3
  1. The values were determined by a logistic regression analysis after bioassays