1 |
Bums, I. G. 1988. The use of rapid tests for measurement of plant nutrient status. Anal. Proc. 25:122-124
|
2 |
Lee, Y. B., M. Y. Roh, Y. R. Cho, and J. H. Bae. 1995. Non-destructive nutrient diagnosis for nitrogen with specific color difference sensor (SCDS) in hydroponics of tomato. J. Bio. Fac. Env. 4: 175-180
|
3 |
Collman, R. R. 1987. Sampling considerations for nitrate quick tests of greenhouse-grown tomatoes. J. Am. Soc. Hort. Sci. 112:922-927
|
4 |
Lyons, D. J., R. L. Williams, and L. E. McCallum. 1991. Sap analysis for the prediction of stem yield and the need for extra nitrogen fertilizer for kenaf. Commun. Soil Sci. Plant Anal. 27:659-666
|
5 |
Sung, J. H., S. R. Sub, Y. S. Ryu, and G. C. Chung. 1999. Comparison of non-destructive method of detect nitrogen in cucumber. Korean J. Agri. Mach. 24:539-546
|
6 |
Hochmuth, G. J. 1994. Efficiency ranges for nitratenitrogen and potassium for vegetable petiole sap quick tests. Hortitechnol. 4:218-222
|
7 |
Nagarajah, S. 1999. A petiole sap test for nitrate and potassium in sultana grapevines. Aust. J. Grape Wine Res. 5:56-60
DOI
|
8 |
Shaahan, M. M., A. A. EI-Sayed, and E. A. A. Abou ElNour. 1999. Predicting nitrogen, magnesium and iron nutritional status in some perennial crops using a portable chlorophyll meter. Sci. Hortic. 82:339-348
DOI
ScienceOn
|
9 |
Jemison, J. M., and R. H. Fox. 1988. A quick-test procedure for soil and plant tissue nitrates using test strips and a hand-held reflectometer. Commun. Soil Sci. Plant Anal. 19:1569-1582
DOI
ScienceOn
|
10 |
Scaife, A, and K. L. Stevens. 1983. Monitoring sap nitrate in vegetable crops: comparison of these strips with electrode methods, and effects of time of day and leaf position. Commun. Soil Sci. Plant Anal. 14:761-771
DOI
ScienceOn
|
11 |
Papastylianou, I. 1989. Diagnosing nitrogen fertilization requirements of cereals in less than 30 seconds. Commun. Soil Sci. Plant Anal. 20:1247-1259
DOI
ScienceOn
|
12 |
Coltman, R. R. 1988. Yields of greenhouse tomatoes managed to maintain specific petiole sap nitrate levels. Hort Science. 23:148-151
|
13 |
Kenworthy, A. L. 1973. Leaf analysis as an aid in fertilizing orchards. p. 381-392. In L. M. Walsh and T. D. Beaton (ed.) Soil testing and plant analysis. SSSA. Madison, Wisconsin, USA
|
14 |
Lee, J. H. 2001. Development of rapid diagnostic methods of mineral nutrient levels in lettuce plants. M.S. Thesis. Univ. of Seoul, Seoul, Korea
|
15 |
Olsen, J. K, and D. J. Lyons. 1994. Petiole sap nitrate is better than total nitrogen in dried leaf for indicating nitrogen status and yield responsiveness of capsicum in subtropical Australia. Aust. J. Exp. Agr. 34:835-843
DOI
ScienceOn
|
16 |
Coltman, R. R., and S. A. Riede. 1992. Monitoring the potassium status of greenhouse tomatoes using quick petiole sap tests. Hortscience 27:361-364
|
17 |
Scaife, A, and M. K. Turner. 1987. Field measurements of sap and soil nitrate to predict nitrogen top-dressing requirement of brussels sprouts. J. Plant Nutr. 10:1705-1712
DOI
ScienceOn
|
18 |
Schaefer, N. L. 1986. Evaluation of a hand held reflectometer for rapid quantitative determination of nitrate. Commun. Soil Sci. Plant Anal. 17:937-951
DOI
ScienceOn
|
19 |
Peng, S., F. V. Garcia, R. C. Laza, A L. Sanico, R. M. Visperas, and K. G. Cassman. 1996. Increased N-use efficiency using a chlorophyll meter on high-yielding irrigated rice. Field Crop. Res. 47:243-252
DOI
ScienceOn
|