Allelopathic Activity of Extracts from Different Brazilian Peanut (Arachis hypogaea L.) Cultivars on Lettuce (Lactuca sativa) and Weed Plants

Table 2

IC₅₀ of crude ethanolic extracts of cultivar BR-1 of A. hypogaea on the inhibition of L. sativa growth of hypocotyls and rootlets.

Crude ethanolic extract	IC50 (ppm)
	Hypocotyl	Rootlet
Aerial part	99.91	96.68
Root	367.5	472.5
Seed coat	106.1	91.46
Seed	72.98	77.43