1. Onion response to ammoniated peat and ammonium-sulfate in relation to ammonium toxicity;Abbes;Can. J. Soil Sci.,1995
2. Effect of NH4+/NO3− ratios on growth and nitrogen uptake by onions;Abbes;Plant Soil,1995
3. Growth, bulb yield and quality of onion (Allium cepa L.) as influenced by nitrogen and phosphorus fertilization on vertisol I. Growth attributes, biomass production and bulb yield;Abdissa;Afr. J. Agric. Res.,2011
4. Crescimento e acúmulo de macronutrientes na cultura da cebola em Baraúna (RN) e Petrolina (PE);Aguiar Neto;Revista Brasileira de Engenharia Agrícola e Ambiental,2014