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Fig. 6. Yearly mean cumulative mass of NO3N in percolate water collected below turfgrass plots in Connecticut from 15 May 2001 to 14 May 2003. Treatments are date of fall fertilization: control (no fall fertilizer), 15 September, 15 October, 15 November, or 15 December. A linear regression relating mean NO3N mass collected in percolate water to the date of fertilizer application is shown. Error bars indicate standard error of the mean.
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