ISHS Acta Horticulturae 490: I International Symposium on Banana in the Subtropics
DEGRADATION STUDIES OF COMMONLY USED PESTICIDES IN BANANA PLANTATIONS IN THE CANARY ISLANDS |
| Authors: | C. Otazo Glez, A. Gonzalez Hernández, M.P. Ortega Rodríguez, R. Martín Suárez, M. Gamón Vila |
| Keywords: | Phytosanitary, Dissipation curves, Musa |
| Abstract:
Eight trials to determine the degradation curves for nine pesticides are presented and discussed. The products studied were: diazinon 60% EC, dimethoate 40% EC, pirimiphosmethyl 50% EC, fenitrothion 50% EC, malathion 50% EC, methyl-parathion 24% CS, quinalphos 24% EC, trichlorfon 80% SP and chlorpyrifos 48% EC. The trials were conducted throughout the year at different crop stages both in open air and under greenhouse cultivation. The pesticides were sprayed using a low pressure system. Analyses of plant material (fruit) were done at times T-0, T+0, T+7, T+14, T+21 and T+28 (T+/-n refers to time in days since treatment). Results indicate that after a period of 7–14 days, the legal MRL (maximum residue level) of Spain was exceeded for the following substances: methyl-parathion, pirimiphos-methyl and quinalphos. | |
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