Three field trials were initiated in two orchards near Frostproof FL.� Both had 15-month-old Valencia trees on Kuharski rootstock planted at 10×20 foot spacing.� Trees exhibit variable growth and health and are infested by sting nematode.� The first trial to determine the effect of perennial peanut in middles with or without oxamyl in rows was designed as a randomized complete block within four rows. Treatments comprise 4 adjacent trees replicated 4 times (complete factorial arrangement of untreated, peanut, oxamyl, peanut + oxamyl). We purchased the peanut as sod that was installed on 5 March and is being watered by hand 3 times weekly until established.� The second trial compares the efficacy against sting nematode of oxamyl, aldicarb, fluensulfone, fluopyram, fluazaindolizine, and an experimental compound (Syngenta) in a randomized complete block design�with eight, four-tree replicates. All plots were plumbed across 16 rows to be treated by injecting the materials into a single, central manifold feeding the appropriate microjets. Two products per day are being applied with the irrigation cylcle and the first treatments of all products will be completed this week. The third trial is in a nearby orchard in which sunn hemp has been sown in tree middles in such a way that eight, four-tree replicates will be arranged in a randomized complete block design testing effects on sting nematode and tree health of the complete factorial treatments of untreated, oxamyl treated, sunn hemp treated, and oxamyl + sunn hemp.� Sunn hemp was planted on 7 March.� Trunk girth of all experimental trees in all trials was measured on 6-7 March.�