Ozone Dosage-Crop Loss Function for Alfalfa: A Standardized Method for Assessing Crop Losses from Air Pollutants
Open Access
- 1 September 1976
- journal article
- research article
- Published by Taylor & Francis in Journal of the Air Pollution Control Association
- Vol. 26 (9) , 861-865
- https://doi.org/10.1080/00022470.1976.10470330
Abstract
Ozone dose-crop loss conversion functions for alfalfa (Medicago sativa, L. var. Moapa 69) yield reduction and defoliation were developed using standardized field plots within an ambient O3 gradient in the South Coast Air Basin. Seasonal yields and defoliation values were tested with O3 dose, average daily maximum temperature, average daily minimum temperature, and average daily relative humidity in regression analyses to determine significant functional relationships. Only the ambient O3 dose variable was found to have a significant effect on alfalfa yield or defoliation (yield, r = –0.827, t-slope = 3.900**; defoliation, r = –0.890, t-slope = 5.190**). The ozone dose-crop loss conversion functions were calculated by converting the dose-response functions to dose-percent reduction functions.This publication has 0 references indexed in Scilit: