Abstract:

Objective criterions describing plant symptoms responding to nutrient sufficiency and deficiency have been established based on extensive literature review. Typical and non-typical symptoms of most crops, which were in a total number of 286, had been input to the database. These symptoms were classified according to elements, and an objective criterion was established for each of the 12 elements. An index describing the apparent symptoms regarding the plants, locations and leaves was also established for diagnosing search. This paper finally discussed the advantages of using SQL server2000 as the database platform. This study could contribute to the development of plant nutrition diagnose databases.