Exchange resins measure rotation effect on nutrient availability
Salisbury, S. E. and N. W. Christensen . 2000. Better Crops 84:14-16
Abstract
Differences in nitrogen (N),
phosphorus (P), and potassium
(K) availability resulting
from crop rotation were
measured using ion exchange
resins. Resin probes
quantitatively measured differences
in availability of the
yield-limiting nutrient and
detected differences in nonlimiting
nutrients.