REFERENCES
- Alexander , M. 1965 . “ Soil nitrogen ” . In Soil nitrogen , Edited by: Bartholomew , W. V. and Clark , F. E. 307 – 335 . Madison, WI : American Society of Agronomy . Agronomy Monograph 10
- Andraski , T. W. and Bundy , L. G. 2002 . Using the pre-sidedress soil nitrate test and organic nitrogen crediting to improve corn nitrogen recommendations . Agronomy Journal , 94 : 1411 – 1418 .
- Breimer , T. and Slangen , J. H. 1981 . Pretreatment of soil samples before NO3-N analysis. Netherlands . Journal of Agricultural Science , 29 : 15 – 22 .
- Bremner , J. M. 1965 . “ Inorganic forms of nitrogen ” . In Methods of soil analysis: Part 2 , Edited by: Black , C. A. 1179 – 1237 . Madison, WI : American Society of Agronomy . Agronomy Monograph 9
- Gasser , J. K. R. 1958 . Use of deep-freezing in the preservation and preparation of fresh soil samples . Nature , 181 : 1334 – 1335 .
- Keeney , D. R. and Nelson , D. W. 1982 . “ Chemical and microbiological properties ” . In Methods of soil analysis: Part 2 , Edited by: Page , A. L. , Miller , R. H. and Keeney , D. R. 643 – 698 . Madison, WI : American Society of Agronomy . Agronomy Monograph 9
- Ma , B. L. and Dwyer , L. M. 1999 . Within plot variability in available soil mineral N in relation to leaf greenness and yield . Communications in Soil Science and Plant Analysis , 30 : 1919 – 1928 .
- Ma , B. L. , Dwyer , L. M. and Gregorich , E. D. 1999 . Soil nitrogen amendment effects on nitrogen uptake and grain yield of maize . Agronomy Journal , 91 : 650 – 656 .
- Magdoff , F. 1991 . Understanding the Magdoff pre-sidedress nitrate test for corn . Journal of Production Agriculture , 4 : 297 – 305 .
- Magdoff , F. R. , Ross , D. and Amadon , J. 1984 . A soil test for nitrogen availability to corn . Soil Science Society of America Journal , 48 : 1301 – 1304 .
- Mattos , J. D. , Cantarella , H. , Raij , H. and Van Raij , B. 1995 . Handling and storage of soil samples for preservation of inorganic nitrogen . Revista Brasileria de Ciencia do Solo , 19 : 423 – 431 .
- Mulvaney , R. L. 1996 . “ Nitrogen-inorganic forms ” . In Methods of soil analysis: Part 3, Chemical methods , Edited by: Sparks , D. L. 1123 – 1184 . Madison, WI : American Society of Agronomy . Soil Science Society of America Book Series 5
- Nelson , D. W. and Bremner , J. M. 1972 . Preservation of soil samples for inorganic nitrogen analyses . Agronomy Journal , 64 : 193 – 199 .
- Robinson , J. B. D. 1967 . The preservation unaltered of mineral nitrogen in tropical soils and soil extracts . Plant and Soil , 27 : 53 – 80 . [CROSSREF]
- SAS . 1996 . SAS/Stat User's Guide , Cary, NC : Statistical Analysis System Institute . Version 6.
- Selmer-Olsen , A. R. , Qien , A. , Baerug , R. and Lyngstad , I. 1971 . Pretreatment and storage of soil samples prior to mineral nitrogen determination . Acta Agriculture Scandinavica , 21 : 57 – 63 .
- Storrier , R. R. 1966 . The pre-treatment and storage of soil samples for nitrogen analyses . Journal of Australian Institute of Agricultral Science , 32 : 106 – 113 .
- Van Erp , P. J. , Houba , V. J. and van Beusichem , G. 2001 . Effect of drying temperature on amount of nutrient elements extracted with 0.01 MCaCl2soil extraction procedure . Communications in Soil Science and Plant Analysis , 32 : 33 – 48 . [CROSSREF]
- Van Miegroet , H. 1995 . Inorganic nitrogen determined by laboratory and field extractions of two forest soils . Soil Science Society of America Journal , 59 : 549 – 553 .
- Westfall , D. G. , Henson , M. A. and Evans , E. P. 1978 . The effect of soil sample handling between collection and drying on nitrite concentration . Communications in Soil Science and Plant Analysis , 9 : 169 – 185 .