Other Contributions: Effects of Chemicals and Plastic Mulch on Nematode Populations and Yield of Tomato

Abstract

In a field experiment, comparisons were made of D-D, DD-MENCS, Bunema, Oxamyl, Phenamiphos and DBCP for the control of plant parasitic nematodes and their effect on yield of tomato. Examination of soil samples from each experimental plot 2 mos after planting showed that the nematicides significantly reduced populations of Pratylenchus zeae, Helicotylenchus dihystera, Rotylenchulus reniformis, Tylenchorhynchus sp., Criconemoides sp. and Meloidogyne incognita. The use of black plastic film as a mulch did not enhance nematode control by the nematicides although good week control was achieved. Fruit yield was not significantly increased by the nematicides, with or without plastic mulch, and compound x mulch interaction had no significant effect. No compound showed any evidence of being phytotoxic.