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Nitrogen Stress Effects on Growth and Nitrogen Accumulation by Field-Grown Tomato

Johannes Scholberga, Brian L. McNeala, Kenneth J. Booteb, James W. Jonesc, Sal J. Locasciod and Stephen M. Olsone

a Soil and Water Science Dep., Univ. of Florida, Gainesville, FL 32611-0510 USA
b Agronomy Dep., Univ. of Florida, Gainesville, FL 32611-0510 USA
c Agricultural and Biological Engineering Dep., Univ. of Florida, Gainesville, FL 32611-0570 USA
d Horticultural Science Dep., Univ. of Florida, Gainesville, FL 32611-0690 USA
e North Florida Research and Education Center, Route 3 Box 4370, Quincy, FL 32351-9529 USA



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Fig. 1 Average leaf size (a) and leaf number (b) with 0, 100, 200, and 300 kg N at Bradenton (spring 1995)

 


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Fig. 2 Leaf photosynthesis of recently matured leaves with 0, 133, 200, 266, and 333 kg N at Gainesville during the spring of 1995 (a) and with 0, 66, 133, 200, and 266 kg N at Quincy during the fall of 1995 (b)

 


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Fig. 3 Total dry weight accumulation over time as a function of cumulative intercepted radiation with 0, 100, 200, and 300 kg N at Bradenton during the spring of 1995 (a) and with 0, 66, 133, 200, and 266 kg N at Quincy during the fall of 1995 (b)

 


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Fig. 4 Absolute growth rate with 0, 100, 200, and 300 kg N at Bradenton during the spring of 1995 (a) and with 0, 66, 133, 200, and 266 kg N at Quincy during the fall of 1995 (b)

 


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Fig. 5 Nitrogen concentration of roots (a), stems (b), leaves (c), and fruits (d) with 0, 100, 200, and 300 kg N at Bradenton during the spring of 1995

 


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Fig. 6 Nitrogen accumulation by tomato with 0, 100, 200, and 300 kg N at Bradenton during the spring of 1995 (a) and with 0, 66, 133, 200, and 266 kg N at Quincy during the fall of 1995 (b)

 





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