In-field assessment of single leaf nitrogen status by spectral reflectance measurements

被引：54

作者：

Alchanatis V. ^{[1
]}

Schmilovitch Z. ^{[1
]}

Meron M. ^{[2
]}

机构：

[1] Inst. of Agricultural Engineering, ARO, Volcani Center, Bet Dagan 50250

[2] Galilee Technology Center, Migal, Rosh Pinna 12100

来源：

Precision Agriculture | 2005年 / 6卷 / 1期

关键词：

Fertilization; Minispectrometer; NIR; Optical sensor; Spectroscopy; Variable rate application;

D O I：

10.1007/s11119-005-0682-7

中图分类号：

学科分类号：

摘要：

Commercial agriculture has come under increasing pressure to reduce nitrogen fertilizer inputs in order to minimize potential non-point source pollution of ground and surface waters. This has resulted in increased interest in site-specific fertilizer management. This research aimed to develop techniques for real time assessment of nitrogen status of corn using a mobile sensor with the potential to regulate nitrogen application based on data from that sensor. Specifically, the research attempted to determine the system parameters necessary to optimize reflectance spectra of corn plants as a function of growth stage and nitrogen status. An adaptable, multi-spectral sensor and the signal processing algorithm to provide real time, in-field assessment of corn nitrogen status were developed. © 2005 Springer Science+Business Media, Inc.

引用

页码：25 / 39

页数：14

共 16 条

[1]

Bausch W.C., Diker K., Goetz A.F.H., Curtis B., Hyperspectral Characteristics of Nitrogen Deficient Corn. ASAE Paper No. 983061, (1998)

[2]

Haboudane D., Miller J.R., Tremblay N., Zarco-Tejada P.J., Dextraze L., Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture, Remote Sensing of Environment, 81, pp. 416-426, (2002)

[3]

Harvey K.L., The solar activity cycle and sun-as-a-star variability in the visible and infrared, Proceedings of the Second Annual Lowell Observatory Fall Workshop, Solar Analogs: Characteristics and Optimum Candidates, (1997)

[4]

Hill J.H., How a Corn Plant Develops, Special Report No. 48, (1997)

[5]

Lee W., Searcy S.W., Kataoka T., Assessing Nitrogen Stress in Corn Varieties of Varying Color. ASAE Paper No. 993034, (1999)

[6]

Li G.Y., Alchanatis V., Schmilovitch Z., Nitrogen status detection of corn leaves by reflectance technique, Century, (1999)

[7]

Hydro N-Sensor, (2002)

[8]

Piekielek W.P., Fox R.H., Toth J.D., MacNeal K.E., Use of a chlorophyll meter at the early dent stage of corn to evaluate nitrogen sufficiency, Agronomy Journal, 87, pp. 403-408, (1995)

[9]

Read J.J., Tarpley L., McKinion J.M., Reddy K.R., Narrow-waveband reflectance ratios for remote estimation of nitrogen status in cotton, Journal of Environmental Quality, 31, pp. 1442-1452, (2002)

[10]

Smeal D., Zhang H., Chlorophyll meter evaluation for nitrogen management in corn, Communications in Soil Science and Plant Analysis, 25, pp. 1495-1503, (1994)

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