Sentence:  [T]he very wet winter will have washed much of the goodness out of the soil. Homemade <WSD>compost</WSD> and the load of manure we get from a friendly farmer may not be enough to compensate for what has leached from the ground. 
Meaning of the word marked with <WSD> tags:  The decayed remains of organic matter that has rotted into a natural fertilizer.