Research Papers: Effect of Nematicides on Yield of Pepper in Belonolaimus longicaudatus Infested Soil

Three experiments were conducted during 1978-80 to determine the efficiency of nematicides for controlling the sting nematode, Belonolaimus longicaudatus Rau, on pepper (Capsicum annum L.) in Myakka fine sand. All materials were applied as in-row treatments. The soil fumigant, DD, applied at 75 L/ha gave excellent control of the nematodes and increased yields significantly when there was a 2 wk. delay between application and transplanting. With a 1 wk. delay, phytotoxicity symptoms occured and yield increase was less. Ethylene dibromide (EDB) applied at 19 L/ha (90 EC) also gave excellent control but was extremely phytotoxic when applied only 2 days prior to transplanting. All nonfumigant nematicides (aldicarb, carbofuran, ethoprop, oxamyl, phenamiphos, and terbufos) applied at 2.24 and 3.36 kg/ha significantly reduced nematode populations and all except oxamyl and ethoprop in one experiment increased yields significantly. The high rate of these materials was not significantly better