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| Possible Application of GreenSeeker in Diagnosing Potato Nitrogen Nutrition Status |
| YU Jing1，LI Fei2，FAN Ming-shou |
| 1College of Agronomy，Inner Mongolia Agricultural University，Hohhot 010019，Inner Mongolia，China|2College of Ecology and Environmental Science，Inner Mongolia Agricultural University，Hohhot 010019，Inner Mongolia， China |
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Abstract Nitrogen fertilizer has been playing an important role in potato production for a long time．In China，the nitrogen use efficiency（NUE）decreased due to the increment of N application，which caused environmental problems．It was well known that NUE increased when synchronizing N supply from fertilizer and N demand of potatoes（Solanum tuberosum L.）．However，the traditional soil-plant measurement based on N recommendation method is costly，labor intensive and time consuming．With the development of remote sensing technology，it provides an opportunity for timely estimating potato N status．This paper introduced the general principle of crop nitrogen nutrition diagnosis based on GreenSeeker and summarized the research progress both internal and external on the nitrogen management for wheat and maize，also discussed the importance，feasibility of using GreenSeeker to diagnose potato N status and its application prospective．
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Received: 31 July 2011
Published: 19 November 2011
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