Nitrogen Uptake of Field-grown Cotton. II. Nitrate Reductase Activity and Petiole Nitrate Concentration as Indicators of Plant Nitrogen Status
1983 ◽
Vol 19
(1)
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pp. 103-109
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Keyword(s):
Soil N
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SUMMARYThe possibility of using seasonal changes in leaf nitrate reductase activity (NRA) as a reliable and sensitive indicator of plant nitrogen (N) status has been investigated in field-grown cotton. These changes were compared with those in nitrate concentration in petioles and variations in soil-N concentration. We conclude that NRA in the uppermost, fully-expanded sympodial leaves may provide a more convenient, sensitive and reliable indicator of plant-N status than measurements of nitrate concentrations in petioles.
1978 ◽
Vol 58
(2)
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pp. 283-285
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Keyword(s):
1975 ◽
Vol 26
(1)
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pp. 1
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1999 ◽
Vol 105
(2)
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pp. 218-223
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2010 ◽
Vol 23
(3)
◽
pp. 363-369
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1992 ◽
Vol 296
(1)
◽
pp. 58-65
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Keyword(s):