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Effect of NH4/NH4+NO3 ratio of nutrient solutions on greenhouse tomato cultivars in hydroponic systems



Effect of NH4/NH4+NO3 ratio of nutrient solutions on greenhouse tomato cultivars in hydroponic systems



Iranian Journal of Agricultural Sciences 31(3): 613-625



Three greenhouse tomato cultivars (Nikita, Hamara and Elena) were cultured in a hydroponic system using five different nutrient solutions with varying proportions of ammonium (NH4+) and nitrate (NO3-). Increasing proportions of NH4+ in the nutrient solution reduced the fruit yield, the dry weights of leaves and fruits, and the contents of ascorbic acid, titratable acidity, total soluble solids and NO3-.

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