Logged in

SPAD and atLEAF values were strongly correlated and not affected by the different measurement conditions. The atLEAF Chl meter can therefore be used as an inexpensive alternative to the SPAD-502 meter, although the latter was found to be easier to handle.

Juanjuan Zhu¹, Nicolas Tremblay², and Yinli Liang^1,3
1College of Life Sciences, Northwest AF Univ., China; 2Horticulture Research and Development Centre, Agriculture and Agri-Food Quebec, Canada; and 3Institute of Soil Water and Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, P.R. China.

The average AtLeaf chlorophyll index reading of the penultimate leaves was closely correlated to the tissue N concentration of those leaves and served as a good predictor of the eventual protein content of the grain.

M. Lundy, S. Wright, Farm Advisor, S. Orloff, UC Cooperative Extension; R. Hutmacher , UC Cooperative Extension Specialist, UC Davis Plant Sci. Dept. and Director, UC West Side REC;