Effects Of Ammonium To Nitrate Ratio And Salinity On Yield And Fruit Quality Of Large And Small Tomato Fruit Hybrids

Journal of Plant Nutrition
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Effects of Ammonium to Nitrate Ratio and Salinity on Yield and Fruit Quality of Large and Small Tomato Fruit Hybrids

Gad Ben-Oliel a; Surya Kant a; Michael Naim a; Haim D. Rabinowitch a; Gary R. Takeoka b; Ron G. Butteryb; Uzi Kafkafi a a Institutes of Plant Sciences and Genetics in Agriculture and of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot, Israel b Western Regional Research Center, US Department of Agriculture, Agricultural Research Service, Albany, California, USA Online Publication Date: 02 January 2005

To cite this Article Ben-Oliel, Gad, Kant, Surya, Naim,Michael, Rabinowitch, Haim D., Takeoka, Gary R., Buttery, Ron G. and Kafkafi,

Uzi(2005)'Effects of Ammonium to Nitrate Ratio and Salinity on Yield and Fruit Quality of Large and Small Tomato Fruit Hybrids',Journal of Plant Nutrition,27:10,1795 — 1812
To link to this Article: DOI: 10.1081/PLN-200026430 URL: http://dx.doi.org/10.1081/PLN-200026430

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JOURNAL OF PLANT NUTRITION Vol. 27, No. 10, pp. 1795–1812, 2004

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Effects of Ammonium to Nitrate Ratio and Salinity on Yield and Fruit Quality of Large and Small Tomato Fruit Hybrids
Gad Ben-Oliel,1 Surya Kant,1 Michael Naim,1 Haim D. Rabinowitch,1 Gary R. Takeoka,2 Ron G. Buttery,2 and Uzi Kafkafi1,*Institutes of Plant Sciences and Genetics in Agriculture and of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot, Israel 2 Western Regional Research Center, Agricultural Research Service, US Department of Agriculture, Albany, California, USA
1

ABSTRACT
Tomato cultivars respond differently to nitrogen (N) sources and to saline conditions, in terms of bothyield and fruit quality. Interactions between salinity and NHþ =NOÀ ratios with tomato 3 4

*Correspondence: Uzi Kafkafi, Institutes of Plant Sciences and Genetics in Agriculture and of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot, Israel; E-mail: kafkafi@agri.huji.ac.il. 1795
DOI: 10.1081/LPLA-200026430 Copyright & 2004 by Marcel Dekker, Inc. 0190-4167(Print); 1532-4087 (Online) www.dekker.com

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Ben-Oliel et al. genotypes were studied. The effect of four ammonium levels (0, 1, 2, 4 mM of total 8 mM N) and two salinity levels (0 and 45 mM NaCl) on cv. ‘‘R-144’’, and the effect of two salinity levels (0 and 45 mM NaCl) on four tomato hybrids (‘‘R-144’’, ‘‘R-175’’, ‘‘FA612’’, and ‘‘FA624’’) were studied in twogreenhouse experiments. The effects of two NHþ levels, (0 and 2 mM out of total N at 8 mM), and two 4 salinity levels (0 and 20 mM NaCl) on large-fruit (‘‘R-144’’) and small-fruit (‘‘FA612’’) tomato hybrids were also studied in a nethouse. The NaCl at 45 mM resulted in a smaller leaf area index (LAI), lower plant dry matter and lower fruit yield than controls. Addition of 1 mM NHþ to the nutrient...