Effect of Farmyard Manure and Nitrogen Fertilizer Rates on Growth, Yield and Yield Components of Onion (Allium cepa L.) at Jimma, Southwest Ethiopia

Kokobe W. Yohannes, Derbew Belew and Adugna Debela

Asian Journal of Plant Sciences 12 ( 6-8 ): 228 - 234 , 2013