ISHS Acta Horticulturae 145: Symposium on the Use of Fertilizers in Protected Vegetable Production
NITRATE IN VEGETABLES UNDER PROTECTED CULTIVATION |
| Author: | J.P.N.L. Roorda van Eysinga |
| Abstract:
The results are given of a survey in which the nitrate content of various crops under protected cultivation was studied. Leafy vegetables have a high, fruit vegetables a low nitrate content. The growing period within the year /= the global radiation level/ was found to strongly affect the nitrate content of lettuce. The regression equation of nitrate content of lettuce on average radiation in 12 months was calculated. | |
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