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Nitrate- and ammonium-N absorption by vegetables from nutrient solution containing ammonium nitrate and the resultant change of solution pH


, : Nitrate- and ammonium-N absorption by vegetables from nutrient solution containing ammonium nitrate and the resultant change of solution pH. Journal of the Japanese Society for Horticultural Science 50(2): 225-230

Twenty vegetable species were grown for 5-9 days in solution culture with 3 levels of NH4NO3 at pH 5 or 7. Melon, cucumber, lettuce, mitsuba (Cryptotaenia japonica), celery, garland chrysanthemum (Chrysanthemum coronarium) and seri (Oenanthe javanica) plants absorbed NH4-N selectively or predominantly irrespective of the pH. Eggplants absorbed NH4-N predominantly at pH 7 but both N forms equally at pH 5.

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