Table 3 Rates of isoxaflutole application causing 10% and 50% reduction in the growth of Zhengdan 958, and 50% and 90% reductions in the growth of Eleusine indica and Portulaca oleracea as well as the selectivity index (SI) between Zhengdan 958 and the two weeds 21 d after treatment (DAT) in a greenhouse study.

From: Greenhouse and field evaluation of isoxaflutole for weed control in maize in China

Trial plants

IC value (SE)a

SIb

IC10

IC50

IC90

_______________g a.i. ha−1________________

Zhengdan 958

232.4 (10.1)

292.4 (14.3)

NDc

ND

Eleusine indica

ND

2.2 (0.1)

19.3 (1.0)

12.0

Portulaca oleracea

ND

2.0 (0.1)

18.8 (0.8)

12.4

  1. aIC, inhibitory concentration. bSI, selectivity index. Selectivity index was calculated according to equation 2: SI = IC 10(maize) /IC 90(weed) . cND, not determined.
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