You could look at it directly as a presentation and discuss the different activities being shown in each of the photos.
You could print off and laminate the photos to make an interesting, eye-catching display about farming.
The students could also take the laminated photos and sort them into different rich farming activities. The students can then discuss why each actvity was being completed.
The photos could also be used as prompts for creative writing, factual writing or descriptive writing.