Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A study was conducted in Arizona in 1997 with the objective of analyzing the accuracy of a recently developed portable nitrate meter (Cardy meter) to effectively measure nitrate-nitrogen (NO3-N) in irrigated cotton (Gossypium ssp.). This task was accomplished by performing a correlation and linear regression analyses on NO3-N concentrations of cotton petiole sap, as measured by the Cardy meter, against the standard procedure using dried petiole NO3-N concentrations, as measured by the ion selective electrode (ISE). Results revealed that the NO3-N concentrations of petiole sap were highly correlated with dried petiole NO3-N (pearson correlation coefficient = 0.96, P <0.0001). Therefore, a regression equation with an r2 = 0.92 was derived: Y = 9.96X - 1170.86, where X and Y are NO3-N in petiole sap (ppm) and dried petiole (ppm), respectively. These results suggest that the sap analysis using the Cardy meter is a potentially valuable tool to monitor the in-season N status of irrigated cotton.

Original languageEnglish (US)
Title of host publicationProceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999
PublisherNational Cotton Council of America
Pages651-652
Number of pages2
StatePublished - 1998
Externally publishedYes

Fingerprint

Nitrates
Cotton
Nitrogen
Ion selective electrodes
Linear regression

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Smith, J. H., Silvertooth, J., & Norton, E. R. (1998). Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton. In Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999 (pp. 651-652). National Cotton Council of America.

Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton. / Smith, J. H.; Silvertooth, Jeffrey; Norton, Elbert R.

Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999. National Cotton Council of America, 1998. p. 651-652.

Research output: Chapter in Book/Report/Conference proceedingChapter

Smith, JH, Silvertooth, J & Norton, ER 1998, Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton. in Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999. National Cotton Council of America, pp. 651-652.
Smith JH, Silvertooth J, Norton ER. Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton. In Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999. National Cotton Council of America. 1998. p. 651-652
Smith, J. H. ; Silvertooth, Jeffrey ; Norton, Elbert R. / Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton. Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999. National Cotton Council of America, 1998. pp. 651-652
@inbook{ce9d94f6213f46b097b5173e034be850,
title = "Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton",
abstract = "A study was conducted in Arizona in 1997 with the objective of analyzing the accuracy of a recently developed portable nitrate meter (Cardy meter) to effectively measure nitrate-nitrogen (NO3-N) in irrigated cotton (Gossypium ssp.). This task was accomplished by performing a correlation and linear regression analyses on NO3-N concentrations of cotton petiole sap, as measured by the Cardy meter, against the standard procedure using dried petiole NO3-N concentrations, as measured by the ion selective electrode (ISE). Results revealed that the NO3-N concentrations of petiole sap were highly correlated with dried petiole NO3-N (pearson correlation coefficient = 0.96, P <0.0001). Therefore, a regression equation with an r2 = 0.92 was derived: Y = 9.96X - 1170.86, where X and Y are NO3-N in petiole sap (ppm) and dried petiole (ppm), respectively. These results suggest that the sap analysis using the Cardy meter is a potentially valuable tool to monitor the in-season N status of irrigated cotton.",
author = "Smith, {J. H.} and Jeffrey Silvertooth and Norton, {Elbert R}",
year = "1998",
language = "English (US)",
pages = "651--652",
booktitle = "Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999",
publisher = "National Cotton Council of America",

}

TY - CHAP

T1 - Comparison of two methods for the analysis of petiole nitrate nitrogen concentration in irrigated cotton

AU - Smith, J. H.

AU - Silvertooth, Jeffrey

AU - Norton, Elbert R

PY - 1998

Y1 - 1998

N2 - A study was conducted in Arizona in 1997 with the objective of analyzing the accuracy of a recently developed portable nitrate meter (Cardy meter) to effectively measure nitrate-nitrogen (NO3-N) in irrigated cotton (Gossypium ssp.). This task was accomplished by performing a correlation and linear regression analyses on NO3-N concentrations of cotton petiole sap, as measured by the Cardy meter, against the standard procedure using dried petiole NO3-N concentrations, as measured by the ion selective electrode (ISE). Results revealed that the NO3-N concentrations of petiole sap were highly correlated with dried petiole NO3-N (pearson correlation coefficient = 0.96, P <0.0001). Therefore, a regression equation with an r2 = 0.92 was derived: Y = 9.96X - 1170.86, where X and Y are NO3-N in petiole sap (ppm) and dried petiole (ppm), respectively. These results suggest that the sap analysis using the Cardy meter is a potentially valuable tool to monitor the in-season N status of irrigated cotton.

AB - A study was conducted in Arizona in 1997 with the objective of analyzing the accuracy of a recently developed portable nitrate meter (Cardy meter) to effectively measure nitrate-nitrogen (NO3-N) in irrigated cotton (Gossypium ssp.). This task was accomplished by performing a correlation and linear regression analyses on NO3-N concentrations of cotton petiole sap, as measured by the Cardy meter, against the standard procedure using dried petiole NO3-N concentrations, as measured by the ion selective electrode (ISE). Results revealed that the NO3-N concentrations of petiole sap were highly correlated with dried petiole NO3-N (pearson correlation coefficient = 0.96, P <0.0001). Therefore, a regression equation with an r2 = 0.92 was derived: Y = 9.96X - 1170.86, where X and Y are NO3-N in petiole sap (ppm) and dried petiole (ppm), respectively. These results suggest that the sap analysis using the Cardy meter is a potentially valuable tool to monitor the in-season N status of irrigated cotton.

UR - http://www.scopus.com/inward/record.url?scp=0032426167&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032426167&partnerID=8YFLogxK

M3 - Chapter

AN - SCOPUS:0032426167

SP - 651

EP - 652

BT - Proceedings of the 1998 beltwide cotton conferences, San Diego, CA, USA, January 5-9 1999

PB - National Cotton Council of America

ER -