Search Results       Your search for [subject]Yams -- Fertilizers and manures returned 1 record.           Yield and nutrient content of purple and white varieties of yam (Dioscorea alata L.) grown on six major soil types of Bohol. by Alejan, Tomasita A.; 1982. Subject: Yams -- Fertilizers and manures; Soils -- Surveys -- Bohol, Philippines; Soils -- Classification; Discorea alata.          Add to Book Cart Relevance: 22.13%