ISHS Acta Horticulturae 220: I International Symposium on Vegetables for Processing
A QUICK SAPTEST AS A TOOL TO CONTROL THE QUALITY OF SOME VEGETABLE CROPS |
| Authors: | K. VLASSAK, K.U. Leuven, J. VERMEULEN, K.U. Leuven |
| Abstract:
A simple and rapid procedure for determination of nitrate in petiole sap* is presented. Nitrate concentration was measured using Merckoquant strips which were found to be quite accurate. There was a strong response of the test to nitrogen supply in all trials. Sap nitrate concentration gave a good indication of current N nutrition of celery and spinach. The rapid and simple nitrate saptest can be used to detect N-deficiency as well as accumulation of NO3- in celery and spinach and thus to control the quality of some vegetable crops. | |
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