Journal of Nematology (2005) 37, p. 395 (Sipes et al.)

B.S. Sipes, J.P. Mueller and D.P. Schmitt (2005)
Post-plant nematode control in pineapples
Journal of Nematology 37 (3), 395-395
44th Annual Meeting, Society of Nematologists, Fort Lauderdale, Florida, 9-13 July, 2005
Abstract: For a time, post-plant nematode control in pineapple was achieved by a single application of di-bromo-chloro-propene (DBCP). With the removal of DBCP, post-plant nematode control in pineapple has relied predominately upon multiple applications of organophosphate nematicides. With the reformulation of 1,3-dichloropropene (1,3-D), the opportunity arises to again use fumigant-type nematicides for post-plant nematode control in pineapple. Evaluations of post-plant 1,3-D have been conducted in experimental plots and in multiple commercial pineapple plantation fields. Post-plant applications of 1,3-D as low as 500 ppm damaged pineapple roots. In field tests, this damage was evident as smaller average fruit sizes and lower marketable yields in some 1,3-D post-plant treatment regimes. Post-plant applications of 1,3-D however, reduced population densities of Rotylenchulus reniformis in pineapple with timing of application critical. Early or late applications of 1,3-D did not affect nematode populations adversely in seasons with especially high nematode disease pressure, the nematode control achieved by application of 1,3-D outweighed the phytotoxicity of the fumigant. In fields with low nematode population densities or during seasons of limited nematode disease pressure, the yield loss caused by the 1,3-D application outweighed the nematode control achieved. The phytotoxicity and nematode control effects of post-plant 1,3-D applications must be balanced in an integrated nematode control program for pineapple.
Database assignments for author(s): Brent S. Sipes

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rotylenchulus reniformis	Pineapple (Ananas comosus)	U.S.A. (Hawaii)