Your value add is the real contribution you make to your organization's success. While doing the activities listed in your job description or your job specification is important and makes a contribution, your value add moves beyond activities or actions performed and illuminates, instead, the actual contributions you made to your organization's success.
It is used in gardens, landscaping, horticulture, and agriculture. The compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, addition of vital humus or humic acids, and as a natural pesticide for soil.
I use comfrey in three ways. The first is simply to add it to the compost heap, where its nutrients will both enrich the whole heap and encourage decomposition. Comfrey has a high carbon to nitrogen ratio - ideal for most plants. The second way is to spread the leaves as a mulch beneath, say, your tomatoes.