In field trials on Myakka fine sand in central Florida, fenamiphos applied at 2.24 kg ai/ha significantly reduced populations of Belonolaimus longicaudatus Rau and Paratrichodorus christiei Siddiqi, and significantly increased early growth and subsequent gram yield of field corn (Zea mays L.). In the same experiment, a commercial preparation of the nematode-trapping fungus, Arthrobotrys amerospora Schenck, Kendrick, & Pramer, applied as a liquid concentrate at 4 and 8 ml (containing 10 -10 colony forming units per ml), or the equivalent of granular formulation, per 305 m of row failed to affect nematode populations or plant growth and yield. Similar results were obtained on okra [Abelmoschus esculentus (L.) Moench.] on which fenamiphos significantly suppressed populations of P christiei and lessened root galling caused by Meloidogyne incognita, whereas A. amerospora failed to affect nematode populations. Similarly, root galling and growth of soybean [Glycine max (L.) Merr.] was not a
