Late to the party, but I like to work the Milorganite into the soil with some 16-4-8 and work it into the soil really well, when I first plant. Established clumps will often get two handfuls or more of the mixture. I start out circling the plant with my hand distributing the fertilizer and use ever how much it takes to put an even band around the entire plant...so the size of the clump actually determines the amount of fertilizer the plants get.
Edited to add:
Recently I have made a few fertilizer applicators...a plastic bottle on the end of a broom or mop handle. The top is usually a creamer top with holes, or a lid I have drilled holes in. This was mostly done to keep my back from acting up, but during the summer I like this because it keeps my hands further away in case of snakes.I get a little hesitant about reaching down and pulling back the foliage. I can use the applicator to push the foliage back out of the way. But the process is the same and I just estimate how much to put out as I go according to the size of the plants. If I am doing seedlings, I will use smaller holes or just move a little faster down the row. I like how I have to shade the applicator as I go and that it does not just freely spill out, gives me more control over how much to apply. This has worked really good with pots also.
