1. Akhtar M, Bashir K, Khan M, Khoklar K (2002) Effect of potash application on yield of different varieties of onion (Allium cepa L.). Asian J Plant Sci 1:324–325
2. Alemneh D (2003) Integrated natural resources management to enhance food security: the case for community-based approaches in Ethiopia. Food and Agriculture Organization of the United Nations, Rome, Italy
3. Allen RG, Pereira LS, Raes D, Smith M (1998) Crop Evapo-transpiration. Guidelines for computing crop water requirements. In: Irrigation and drainage paper, No. 56, FAO, Rome
4. Amin MR, Hasan MK, Naher Q, Hossain MA, Noor ZU (2007) Response of onion to NPKS fertilizers in low ganges flood plain soil. Intl J Sustain Crop Prod 2:11–14
5. Brewster J (1994) Onion and other vegetable Alliums. CAB Int UK 14(3):1–3