Table 9. Percent magnesium of various parts of celery harvested at three stages
 of maturity.

Estimated buter Heart Stem
maturity petioles petioles tissue

 Experiment 1.

1 week before .307 .200 .326
optimum .311 .198 .357
1 week after .316 .207 .325

Significance **

 S Experiment 2

1 week before .300 .171 .363
optimum .289 .165 .406
1 week after .309 .164 .388

Significance **