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Rootknot and Reniform Nematode Control in Pineapple: Alternatives to Nemacur and Telone II

Grant Recipient:

University of Hawaii
3190 Maile Way
Honolulu, HI 96822

Project Period:

23 months - August 1999 - July 2001

Principal Investigator:

Brent S. Sipes

Description
Over 1,047,000 lbs of nematicides are applied to pineapple annually in Hawaii and without these nematicides, pineapple could not be grown. Since the loss of DBCP and EDB registrations in the early 1980s, Telone II and Nemacur have remained industry standards, despite some research into alternatives. Maxicrop, marketed as an algal-based fertilizer, enhances plant growth and has reduced nematode populations. AGRI-50, a colloid product under development, has demonstrated toxicity to nematodes in vitro. This project will evaluate Maxicrop and AGRI-50 against Rotylenchulus reniformis and Meloidogyne javanica on pineapple in a greenhouse trial and a field trial at either the DelMonte, Dole or Maui Land and Pineapple plantation.

Project goals and objectives
Evaluate Maxicrop and AGRI-50 against Rotylenchulus reniformis and Meloidogyne javanica on pineapple in a greenhouse test and field trial.

Outcomes
For greenhouse tests, Maxicrop SP was applied at 0, 1, 2, and 4 lb/ac) 0, 1, 3 and 6 months after planting. Agri-50 (100 to 1 dilution) was applied at 0, 3, and 6 months after planting. Each treatment was replicated six times with the experiments repeated once. In field trials, each treatment, as weall as an untreated control and plantation practice, was replicated four times. Maxicrop and Agri-50 were applied trimonthly at 2 lb/acre or 100:1 dilution respectively through the drip irrigation system.

Neither Maxicrop nor Agri-50 reduced nematode populations in either greenhouse trials or field trials.

Project Links
Data not required at time of project

American Farmland Trust