Study on strawberry of N nutrition diagnosis using digital image processing technique.
Lianjun Wang, Yu Xing · Journal of the South China Agricultural University · 2010
The feasibility of using digital image technique to diagnose strawberry N nutrition was probed by field experiment of six N level treatments.The relationships between the strawberry canopy image parameter of different N levels and soil inorganic N and plant N nutrition indices were analysed.The results showed that it was feasible to monitor strawberry N application rate using digital image technique.The coefficient of determination was high for the value of G/B and G/(R+G+B)under nitrogen fertilizer rates and the value of G/(R+G+B) was the highest for soil inorganic N and plant N nutrition indices.The N fertilizer rates of strawberry flowering and fruiting stage were recommended on the basis of the value range of G/(R+G+B) which could reflecte strawberry N nutrition status.