Method to determine without contact the current nutritional status of a vegetable crop that is not completely covered with respect to the soil or that does not completely cover the bottom, and to process this information considering other parameters such as the type of fruit and / or the variety and / or the development phase and / or the performance objective to provide a subscriber and / or phytosanitary recommendation, in which a digital image of a part of the plant crop composed of pixels in two spectral channels is captured through a capture system of images, the current nutritional status is determined from the image based on an image analysis and the subscriber and / or phytosanitary recommendation is extracted from it, characterized in that the digital image is calibrated by itself, by the determination of the relative tristimulus values of the isolated pixels of the image, for the different lighting conditions, image settings and if Image capture stemas after image capture, in which the proportion of the soil that is not covered by plants on the total surface of the digital image is at least 10-20%.Método para determinar sin contacto el estado nutricional actual de un cultivo vegetal que no está completamente tapado respecto al suelo o que no cubre completamente el fondo, y para procesar esta información considerando otros parámetros como el tipo de fruto y/o la variedad y/o la fase de desarrollo y/o el objetivo de rendimiento para proporcionar una recomendación de abonado y/o fitosanitaria, en el que se captura una imagen digital de una parte del cultivo vegetal compuesta de píxeles en dos canales espectrales a través de un sistema de captura de imágenes, se determina a partir de la imagen el estado nutricional actual partiendo de un análisis de la imagen y se extrae a partir de ello la recomendación de abonado y/o fitosanitaria, caracterizado por que la imagen digital se calibra por sí misma, mediante la determinación de los valores triestímulo relativos
