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Mobilization of Nitrogen‐15 from Vegetative to Reproductive Tissue of Peanut 1
Author(s) -
Kvien C. S.,
Weaver R. W.,
Pallas J. E.
Publication year - 1986
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1986.00021962007800060004x
Subject(s) - arachis hypogaea , point of delivery , vegetative reproduction , nitrogen , fruit set , horticulture , biology , mobilization , main stem , agronomy , botany , chemistry , pollination , pollen , history , organic chemistry , archaeology
A field experiment was conducted to gain a greater understanding of vegetative N mobilization in the peanut ( Arachis hypogaea L.) during the pod filling period. Vegetative tissue was labeled with foliarly applied 15 NH 4 SO 4 prior to initial pod set and mobilization of the incorporated 15 N into various plant parts was then followed from initial pod set until harvest. We concluded from our analysis of individual plant parts that a portion of the 15 N label moved out of all vegetative plant parts. Nitrogen concentration (g N kg −1 plant tissue) and 15 N enrichment in the vegetative portion of both ‘Florunner’ and ‘Tamnut 74’ declined continuously until the optimum harvest date. The decline of 15 N enrichment in the foliage over time was matched by a continuous increase in 15 N by the developing fruit.