A decision support method for the management of a fruit tree orchard, characterized in that the method comprises the following steps: - Receiving a plurality of digital images acquired in color, each image representing a respective fruit element of the orchard and being encoded in Red-Green-Blue components, - Then for each current image of the plurality of images: ∘ Converting the acquired digital current image into a converted HSL image encoded in Hue Saturation Lightness components defined respectively in a Hue plane, a Saturation plane and a Lightness plane, ∘ Filtering the Hue Saturation Lightness components: ▪ in the Hue plane as a function of a predefined Hue threshold value to obtain a filtered Hue plane, ▪ in the Saturation plane as a function of a predefined Saturation threshold value to obtain a filtered Saturation plane, and ▪ in the Lightness plane as a function of a predefined Lightness threshold value to obtain a filtered Lightness plane, ∘ Combining the filtered Hue Saturation Lightness planes (5, 6, 7) to obtain a Combined plane, ∘ Calculating a Working plane from the Combined plane, said calculation step comprising a sub-step of: ▪ filtering the groupings of related pixels of the Combined plane as a function of a size threshold value to remove from the Combined plane the groupings of related pixels whose number of pixels is less than said size threshold value, ∘ Counting the objects of interest in the Working plane, - Determining a blooming level for each current image as a function of the number of objects of interest counted for said current image, - Merging the blooming levels of the fruit elements by areas along the rows of the orchard. - Receiving a plurality of digital images acquired in color, each image representing a respective fruit element of the orchard and being encoded in Red-Green-Blue components, - Then for each current image of the plurality of images: ∘ Converting the acquired digital current image into a converted HSL image encoded in Hue Saturation Lightness components defined respectively in a Hue plane, a Saturation plane and a Lightness plane, ∘ Filtering the Hue Saturation Lightness components: ▪ in the Hue plane as a function of a predefined Hue threshold value to obtain a filtered Hue plane, ▪ in the Saturation plane as a function of a predefined Saturation threshold value to obtain a filtered Saturation plane, and ▪ in the Lightness plane as a function of a predefined Lightness threshold value to obtain a filtered Lightness plane, ∘ Combining the filtered Hue Saturation Lightness planes (5, 6, 7) to obtain a Combined plane, ∘ Calculating a Working plane from the Combined plane, said calculation step comprising a sub-step of: ▪ filtering the groupings of related pixels of the Combined plane as a function of a size threshold value to remove from the Combined plane the groupings of related pixels whose number of pixels is less than said size threshold value, ∘ Counting the objects of interest in the Working plane, ∘ Converting the acquired digital current image into a converted HSL image encoded in Hue Saturation Lightness components defined respectively in a Hue plane, a Saturation plane and a Lightness plane, ∘ Filtering the Hue Saturation Lightness components: ▪ in the Hue plane as a function of a predefined Hue threshold value to obtain a filtered Hue plane, ▪ in the Saturation plane as a function of a predefined Saturation threshold value to obtain a filtered Saturation plane, and ▪ in the Lightness plane as a function of a predefined Lightness threshold value to obtain a filtered Lightness plane, ▪ in the Hue plane as a function of a predefined Hue threshold value to obtain a filtered Hue plane, ▪ in the Saturation plane as a function of a predefined Saturation threshold value to obtain a filtered Saturation plane, and ▪ in the Lightness plane as a function of a predefined Lightness threshold value to obtain a filtered Lightness plane, ∘ Combining the filtered Hue Saturation Lightness planes (5, 6, 7) to obtain a Combined plane, ∘ Calculating a Working plane from the Combined plane, said calculation step comprising a sub-step of: ▪ filtering the groupings of related pixels of the Combined plane as a function of a size threshold value to remove from the Combined plane the groupings of related pixels whose number of pixels is less than said size threshold value, ▪ filtering the groupings of related pixels of the Combined plane as a function of a size threshold value to remove from the Combined plane the groupings of related pixels whose number of pixels is less than said size threshold value, ∘ Counting the objects of interest in the Working plane, - Determining a blooming level for each current image as a function of the number of objects of interest counted for said current image, - Merging the blooming levels of the fruit elements by areas along the rows of the orchard.