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Predicting Sugarbeet Dried Petiole NO3‐N by Using Fresh Petiole Juice 1
Author(s) -
Halvorson A. D.,
Hartman G. P.,
Reule C. A.
Publication year - 1975
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/agronj1975.00021962006700050013x
Subject(s) - petiole (insect anatomy) , chemistry , horticulture , botany , agronomy , mathematics , biology , hymenoptera
The amount of time required for petiole NO 3 ‐N analysis by established procedures limits the practical application of petiole testing as a tool for sugarbeet ( Beta vulgaris L.) management in Montana and other short growing season areas. This study was conducted to determine if fresh petiole juice NO 3 ‐N could be used to predict dried petiole NO 3 ‐N, thereby reducing analysis time. Petiole juice NO 3 ‐N was significantly correlated (r = 0.985) with dried petiole NO 3 ‐N when the NO 3 ‐N concentration was determined by steam distillation. Expressing the juice petiole NO 3 ‐N concentration on a dry weight basis slightly improved the correlation (r = 0.994). To accurately determine petiole NO 3 ‐N concentrations using petiole juice, water content should be considered; but for routine testing and practical purposes, water content differences caused by seasonal and/or soil N fertility levels could possibly be estimated or disregarded without serious error in data interpretation. The petiole juice method of determining petiole NO 3 ‐N concentration requires less time, equipment, expense, and space than other established procedures.