Full TGIF Record # 94153
Item 1 of 1
Web URL(s):http://www.tandfonline.com/doi/pdf/10.1081/CSS-120027645
    Last checked: 10/15/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Publication Type:
i
Report
Author(s):Yasrebi, J.; Karimian, N.; Maftoun, M.; Abtahi, A.; Ronaghi, A.; Assad, M. T.
Author Affiliation:College of Agriculture, Shiraz University, Shiraz, Iran
Title:Laboratory and greenhouse evaluation of ultraviolet light absorption methods of estimating nitrogen supplying capacity of calcareous soils
Source:Communications in Soil Science and Plant Analysis. Vol. 35, No. 1/2, January 2004, p. 219-232.
# of Pages:14
Publishing Information:New York, NY: Marcel Dekker
Keywords:TIC Keywords: Nitrogen; Chemical properties of soil; Calcareous soils; Nitrogen uptake; Nitrates; Ammonia; Soil testing; Measurement
Abstract/Contents:"Application of nitrogen (N) fertilizers without knowing the nitrogen supplying capacity (NSC) of soils may lead to low N use efficiency, uneconomical crop production, and pollution of environment. Twenty-five surface (0-20 cm) soil samples (pH 7.9-8.3; organic matter 7.8-35.0 g kg-1; calcium carbonate equivalent 253-648 g kg-1) from cultivated lands of Fars Province of Iran were used in laboratory and a 6-week greenhouse experiment to compare seven methods of estimating NSC of calcareous soils. The methods used were (i) determination of NH4+-N produced following the anaerobic incubation of soils; (ii) determination of NO3--N extracted from soils by 2 M KCl; (iii) determination of NO3--N extracted from soils by H20; (iv), (v), (vi) measuring the amount of ultraviolet (UV) light absorption by soil extracts at 200, 205, and 260 nm; and (vii) determination of NO3--N from the "second derivative" of light absorbance of soil extracts in the range of 200-280 nm. The soils, provided with sufficient nutrients other than N, were planted with corn (Zea mays L., cv Single Cross 704) and total N taken up by aerial parts of the plants was taken as the NSC of soils. Regression equations obtained between plant N uptake and each of the methods showed that absorbance at 205 nm was the best method, predicting 70.5% of the variablities in NSC, when used alone. The "second derivative" method, when used along with organic matter and clay contents of the soils, predicted 84.2% of the variabilities in NSC. It is suggested that UV absorbtion methods be considered as a measure of NSC because they are more rapid, less laborious, and consume less chemicals than biological and conventional chemical methods."
Language:English
References:26
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yasrebi, J., N. Karimian, M. Maftoun, A. Abtahi, A. Ronaghi, and M. T. Assad. 2004. Laboratory and greenhouse evaluation of ultraviolet light absorption methods of estimating nitrogen supplying capacity of calcareous soils. Commun. Soil. Sci. Plant Anal. 35(1/2):p. 219-232.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=94153
If there are problems with this record, send us feedback about record 94153.
Choices for finding the above item:
Web URL(s):
http://www.tandfonline.com/doi/pdf/10.1081/CSS-120027645
    Last checked: 10/15/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Find Item @ MSU
MSU catalog number: S 590 .C54
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)