Fig. 2. Annual changes in total soil P to a depth of 150 cm in (A) nonirrigated and (B) irrigated soils amended annually with different rates of feedlot manure. Values are means (±standard errors)
Fig. 2. Annual changes in total soil P to a depth of 150 cm in (A) nonirrigated and (B) irrigated soils amended annually with different rates of feedlot manure. Values are means (±standard errors)