Manual classification of fruit trees or other plants can

be time-consuming and cost intensive. In contrast,

drone-based multispectral sensors capture high-quality

data that specialized software and algorithms can use to

classify plants in a given field by size, species, chlorophyll

content, and canopy closure.

Some differences among species may not be visible to

the naked eye, which is usually the case of volunteer

plants. The word volunteer is commonly used to refer to

 plants of a varietal different from what was planted

or grafted in a field. Buried in the ground, and growing

in the same way as the remainder of the field, these

volunteer plants can be difficult to spot.