Quantification of mineral oil accumulation and movement in potato plants and its significance in potato virus Y management

Pest Management Science
Manphool FageriaY Pelletier

Abstract

Mineral oils are increasingly sprayed to manage potato virus Y (PVY). However, the mode of accumulation and movement of mineral oil in the potato plant has not been understood. This information is important for optimisation of the concentration and frequency of spraying. During the 2012 season, cvs Russet Burbank and Shepody were planted in the field and in the greenhouse, respectively, and were subjected to mineral oil treatments. The plant samples from the treatment plots were collected, and oil was extracted and quantified using gas chromatography-mass spectrometry. Mineral oil stayed in the vicinity of the sprayed leaves and did not move from leaflet to leaflet or from leaflet to stem, stolon, tuber or root. Following spraying, the oil content in the plant leaves diluted as time progressed. At plant maturity, leaves sampled from the greenhouse sprayed plants had about 4 times more oil content than those sampled from the field sprayed plants. Plots treated with regular spray of mineral oil showed low PVY incidences at crop harvest. The information generated in this study on the pattern of accumulation and movement of mineral oil in greenhouse- and field-grown potato plants shows that, as the oil does not move from leaflet to...Continue Reading

References

Aug 25, 2005·Journal of Experimental Botany·B L TanR Spooner-Hart
Jan 21, 2009·Virus Research·Alberto Fereres, Aranzazu Moreno
Feb 23, 2010·Arthropod Structure & Development·Marilyne UzestStéphane Blanc
Jan 30, 2013·Journal of Economic Entomology·Y PelletierR Foottit

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