Arginine in concord grape as affected by high soil nitrogen fertilization and daminozide
Title:
Arginine in concord grape as affected by high soil nitrogen fertilization and daminozide
Author:
Gao, Yu Cahoon, G. A.
Appeared in:
Journal of plant nutrition
Paging:
Volume 13 (1990) nr. 12 pages 1479-1488
Year:
1990-12
Contents:
Own rooted Concord grapevines, Vitis labruscana B, planted in 1981, trained to the Geneva Double Curtain training system, were used to investigate their response of levels of total arginine of different vine organ to high rates of soil nitrogen fertilization and the growth regulator daminozide. Arginine in fruit juice, not in the leaf petiole or maturecanes, is recommended as an indicator of nitrogen status based on the results of this study. Daminozide did not appear to be involved in the nitrogen nutrition of Concord grapes. Soil nitrogen fertilization increased the total nitrogen content of the leaf petioles both in 1986 and 1987. The arginine content of the fruit juice was not increased in 1986 as a result of nitrogen fertilization, but was increased at three of the four harvest dates in 1987. Daminozide did not affect the arginine content of the fruit juice except at the third harvest date in 1987. Higher nitrogen rates did not increase the arginine content of the leaf petiole or mature canes, although some trends were evident. Daminozide did not have any effect on arginine content of the leaf petiole or mature canes.
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