Construction and assessment of a low cost NDVI sensor

Resumo

Given the potential of low cost sensors for agriculture, a monitoring system with low cost components was constructed to evaluate its capacity to detect variations in vegetative vigor in smooth lettuce seedlings under different growing conditions. The results showed temporal inconsistency and low variability in NDVI values. The inconsistency can be attributed mainly to factors such as luminosity and the high capacity of retention of water and nutrients of the substrate. Days with milder light intensity produced potentially better NDVI values. The low variability of NDVI eventually contributed to its low correlation with mass.