Comparison of Sampling Methods for the Determination of Seasonal Changes in the Nutrient Content of Apple Leaves1

in Journal of the American Society for Horticultural Science
Authors:
D. C. ZeigerNorth Carolina State University, Raleigh

Search for other papers by D. C. Zeiger in
ASHS
Google Scholar
PubMed
Close
and
T. R. KonslerNorth Carolina State University, Raleigh

Search for other papers by T. R. Konsler in
ASHS
Google Scholar
PubMed
Close

Abstract

In studies of seasonal trends in apple leaf nutrients, 5 different seasonal leaf sampling methods using the same shoots of young and old apple trees have been compared with a sampling of mid-shoot leaves on different shoots each sampling date to determine whether there would be any differences in leaf P, K, Ca and Mg trends. Sampling methods resulted in significant interaction with the check only in data for leaf concentration of Ca. The methods which were compared with the check had average seasonal leaf concentrations of P, K, Ca and Mg which differed significantly from the check in a few instances. They also produced slightly to considerably lower coefficients of variation than the check in 78 of 100 possible comparisons. This makes such methods very desirable as alternative sampling procedures where they do not otherwise vary from the standard.

Contributor Notes

Received for publication June 25, 1968. Contribution from the Department of Horticultural Science. Published with the approval of the Director of Research as Paper No. 2665 of the Journal Series.

  • Collapse
  • Expand

 

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 16 16 5
PDF Downloads 9 9 0