Derivation of sufficiency values of a chlorophyll meter to estimate cucumber nitrogen status and yield

Chlorophyll meters are a promising approach for monitoring crop N status of intensively-produced vegetable crops. To do so effectively, it is fundamental that the nature and strength of the relationships between chlorophyll measurement and actual crop N status and yield, throughout the whole crop cycle, be evaluated. Another fundamental requirement for the practical use of chlorophyll meters for crop N monitoring is the availability of...