Field measurements of airborne concentrations and deposition rate of maize pollen

A - Papers appearing in refereed journals

Jarosz, N., Loubet, B., Durand, B., McCartney, H. A., Foueillassar, X. and Huber, L. 2003. Field measurements of airborne concentrations and deposition rate of maize pollen. Agricultural and Forest Meteorology. 119 (1-2), pp. 37-51.

AuthorsJarosz, N., Loubet, B., Durand, B., McCartney, H. A., Foueillassar, X. and Huber, L.
Abstract

In recent years there has been interest in the dispersal of maize (Zea mays) pollen from crops, particularly in relation to gene flow and seed quality. We report the results of experiments that measured maize pollen dispersal from a 20 m x 20 m experimental crop. The experiments were done in a commercial farm in France during the summer of 2000. Pollen production was estimated to range from 10(4) to 2 x 10(6) grains per day per plant. Pollen concentrations and deposition rates decreased rapidly with distance from the crop: concentrations decreased by about a factor of 3 between 3 and 10 m downwind of the source deposition rates at 30 m were < 10% of those at 1 m. Horizontal flux of pollen were estimated from pollen concentration and wind speed profiles using a mass balance approach, and ranged from 15 to 560 grains m-1 s-1 at 3 m from the source. Comparison of deposition rates estimated with the mass balance and direct measurement suggests that only a small proportion of the pollen released from the crop would have been still airborne at distances greater than 30 m downwind. Deposition velocity determined as the ratio of the deposition rate to the airborne concentration at 3 m from the source averaged 0.6 m s-1, which is twice as large as the settling velocity for maize pollen.

KeywordsMaize; Pollen; Particle dispersion; Concentration profile; Deposition velocity; Aerobiology
Year of Publication2003
JournalAgricultural and Forest Meteorology
Journal citation119 (1-2), pp. 37-51
Digital Object Identifier (DOI)doi:10.1016/S0168-1923(03)00118-7
Open accessPublished as green open access
Funder project or code424
507
Fundamental studies of the interaction between environmental factors, crop pathogens and pests, and crops
Accepted author manuscript
Output statusPublished
Publication dates
Online24 Jun 2003
Publication process dates
Accepted02 May 2003
Copyright licenseCC BY-NC-ND
PublisherElsevier Science Bv
ISSN0168-1923

Permalink - https://repository.rothamsted.ac.uk/item/890w7/field-measurements-of-airborne-concentrations-and-deposition-rate-of-maize-pollen

2 total views
1 total downloads
0 views this month
0 downloads this month