Spectral variability analysis Lupinus Mutabilis Sweet under nanofertilizers and chelates application through spectroscopy and Unmanned Aerial Vehicles (UAV) multispectral images.

Abstract Lupine is an Andean legume that has gained importance in Ecuador due to its protein content in the grain. However, in recent times the production of this crop has been affected by inadequate nutritional management. In order to avoid such circumstances, the current study spectrally analyzed lupine cultivation by the effect of the application of nanofertilizers and Fe and Zn chelates, within two controlled trials, using a radiometer spectrum, an active crop sensor and a multispectral sensor mounted on a UAV. Vegetation indices were generated and statistically analyzed using an ANOVA and Tukey tests. In the field trial, the treatments lacked to indicate significant improvements, while in the greenhouse trial, the nanofertilizer treatments indicated better results compared to the control ones. Furthermore, the chelate treatment presented a certain degree of toxicity for the plant.