HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Cooper, R. J. Articles by Curtis, A. S. Search for Related Content PubMed Articles by Cooper, R. J. Articles by Curtis, A. S. Agricola Articles by Cooper, R. J. Articles by Curtis, A. S.

Pendimethalin Volatility following Application to Turfgrass

Dep. of Plant and Soil Sciences, Univ. of Massachusetts, Amherst, MA 01003;

J. J. Jenkins and A. S. Curtis

Massachusetts Pesticide Analysis Lab., and Dep. of Entomology, Univ. of Massachusetts, Amherst, MA 01003.

^* Corresponding author.

ABSTRACT

Volatilization can be a significant avenue of loss for some pesticides following application to field crops or soil. Volatility following pesticide application to dense turfgrass, however, has not been well documented. This work characterized volatilization of the preemergence herbicide pendimethalin [N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine] following application to a Kentucky bluegrass (Poa pratensis L.) turf. Pendimethalin [60% water dispersible granules (WDG)] was applied at 3.4 kg ha^–1 with volatilization losses monitored over a period of 15 d. Pendimethalin vapor flux followed a diurnal pattern with maximum daily flux usually occurring 1300 to 1500 h. Maximum flux of airborne residues occurred 1300 to 1500 h. Maximum flux of airborne residues occurred 1300 to 1500 h on the day of application when losses totaled 23.6 g ha^–1 h^–1. Pendimethalin volatile losses were 4.8% (165 g ha^–1) of the original application during the first 24 h following application. Overnight (1900 to 0700 h) volatile losses measured 9.5 and 10.5 g ha^–1 on Days 1 and 2 of the experiment (each overnight loss approximately 0.3% of application). Volatile losses during the 48 h following application totaled 6.1%, with an estimated loss of approximately 13% during the 5-d period following application. Daily volatile loss declined in a diphasic manner over the course of the study, with an initial period of rapid decline in daily vapor flux lasting 5 to 7 d followed by a period of slower decline for the remainder of the study. Dissipation of foliar dislodgeable residues followed a diphasic decline similar to that observed for daily airborne loss, suggesting a relationship between pendimethalin volatilization and foliar dislodgeable residues over time.

Contribution from the Massachusetts Agric. Exp. Stn., Amherst. Journal Article no. 2930.

Received for publication August 1, 1989.

This article has been cited by other articles:

				R. R. Walden and D. A. Haith Estimating Turf Pesticide Volatilization from Simple Evapotranspiration Models J. Environ. Qual., May 1, 2003; 32(3): 1138 - 1143. [Abstract] [Full Text] [PDF]

				D. A. Haith, P.-C. Lee, J. M. Clark, G. R. Roy, M. J. Imboden, and R. R. Walden Modeling Pesticide Volatilization from Turf J. Environ. Qual., May 1, 2002; 31(3): 724 - 729. [Abstract] [Full Text] [PDF]

				L. Wu, R.L. Green, G. Liu, M.V. Yates, P. Pacheco, J. Gan, and S.R. Yates Partitioning and Persistence of Trichlorfon and Chlorpyrifos in a Creeping Bentgrass Putting Green J. Environ. Qual., May 1, 2002; 31(3): 889 - 895. [Abstract] [Full Text] [PDF]