ISHS Acta Horticulturae 698: VI International Symposium on Chemical and non-Chemical Soil and Substrate Disinfestation - SD2004
ALTERNATIVES TO METHYL BROMIDE IN URUGUAY: |
| Authors: | R.F. Bernal, Y. Mendoza, C. Orihuela |
| Keywords: | soil disinfestation, soil solarization, organic amendments, chemical products, nematodes, crop yield, greenhouse production |
| Abstract:
Uruguay has 400 hectares of protected vegetable crops in the north of the country dedicated to early production. In this area, there are two zones where the nematode problems are very important since crops, such as tomatoes and peppers, almost have a ten-month of harvest period. In one zone, soils are heavy, while in other major places soils are sandy loam. In the heavy soil area, methyl bromide has already been phased out. The alternatives used in both locations are soil solarization alone or in combination with metham sodium or with buried chopped corn plant at the mature green corn stage. Solarization is done during thirty days with the greenhouse closed, and this technology is recommended from mid-December to the end of January to get the highest temperatures during the summer. Beneficial organisms like fluorescent Pseudomonas and Bacillus spp. reproduced satisfactorily in plots with the incorporation of organic amendments. | |
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