ISHS Acta Horticulturae 425: II International Pineapple Symposium
PRE-PLANT AND POST-PLANT PESTICIDES FOR NEMATODE CONTROL IN PINEAPPLE |
| Author: | B.S. Sipes |
| Abstract:
Sustainable production in Hawaii relies upon 1,3-dichloropropene (1,3-D) or methyl bromide as preplant treatments and nonfumigant nematicides such as fenamiphos for postplant nematode control. Many of these pesticides are potential environmental contaminants and their use is restricted in the U.S.A. Application methods and new products were thus evaluated. Tetrathio(peroxocarbonate) (TTPC), metam sodium (MS), and furfural aldehyde (FA) were compared with 1,3-D for reduction of preplant nematode populations. At 1867 1.ha-1, TTPC and FA were as effective as 1,3-D at 337 l.ha-1. As a preplant treatment, an emulsifiable formulation of 1,3-D applied via drip irrigation was as effective as the standard liquid formulation at similar rates. MS was effective for preplant nematode control at 467 1.ha-1. Ethoprop (3.4 kg.ha-1) applied monthly through the drip irrigation system was as effective as fenamiphos (3.4 kg.ha-1) applied every 3 months. Fosthiozate efficacy was similar to fenamiphos at similar rates and application intervals. Emulsifiable 1,3-D (95 l.ha-1) and TTPC (187 1.ha-1) were not effective in postplant nematode control. Pesticides are available which can serve as effective alternatives to industry standards for nematode management. | |
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