Fluctuations of total and nitrate nitrogen in parthenocarpic and nonparthenocarpic fig varieties

E. D. Dekazos and J. C. Crane

Hilgardia, 1966, vol. 37, issue 5

Abstract: Total and nitrate nitrogen determinations were made on various organs of parthenocarpic Mission and Adriatic fig varieties and nonparthenocarpic Calimyrna and Stanford varieties. Total and nitrate nitrogen fluctuated in definite cycles which were associated with season and plant part. All organs analyzed had the highest percentage of nitrogen relative to dry-weight at the start of growth and the lowest when growth had ceased. Three distinct phases appeared in the nitrogen cycle of the developing fruit; these were shown as a double sigmoid curve of opposite directional trend to the curve showing fruit growth in diameter.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Date: 1966
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