The finding that different SLs have different properties towards mycorrhizae and parasitic weeds has allowed Striga-resistant varieties with normal mycorrhization to be obtained. For example, sorghum species mutated at the Low Germination Stimulant 1 (LGS1) locus are resistant to Striga hermonthica and Striga asiatica, and this resistance can be attributed to a change in profile from strigol-type to orobanchol-type SLs [69]. In field trials, a yield increase in sorghum [70], and maize [71], has been observed in farms across sub-Saharan Africa, where Striga-resistant crops were combined with other control measures, such as fertilization and the procedure of non-host trap crops.