Applicability of Vegetation Index and SPAD Reading to Nondestructive Diagnosis of Rice Growth and Nitrogen Nutrition Status
2005
Kim, M.H. (Seoul National University, Seoul, Republic of Korea) | Shin, J.C. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Lee, B.W. (Seoul National University, Seoul, Republic of Korea), E-mail: [email protected]
Precise application of topdressing nitrogen (N) fertilizer is indispensible for securing high yield and good quality of rice and minimizing N losses to the environment as well. For precise N management, growth and nitrogen nutrition status (NNS) should be diagnosed rapidly and accurately. The objective of the study was to evaluate the applicability of vegetation index (VI) calculated from hyperspectral canopy reflectance measurement and SPAD reading to nondestructive in situ diagnosis of growth and NNS of rice.
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