Assertion: manure's pound | /r/HasProperty | potash = 83 percent k
Facets:
Source sentences:
text: Fertilizer value of the 8.5 tons of manure produced annually by a 1,000-pound horse is about 102 pounds of nitrogen (N), 43 pounds of P 2 O 5 (phosphorus pentoxide [phosphate] = 43.7 percent P), and 77 pounds of K 2 O (potash = 83 percent K).