Abstract:
This study was conducted at the experimental farm of the College of Agricultural Studies, Sudan University of Sciences and Technology at Shambat with the objective of evaluating the impact of using different organic fertilizers(Compost Elshomokh, Compost Alkhaseeb, Compost Elkhyrat and Liquid Organic Fertilizer (OsaratEltabya)) on growth, yield and quality of onion (Baftaim cultivar) during the winter season of 2010/2011 and 2011/2012.The studied growth and yield parameters were number of leaves per plant,leaf length, bulb diameter, bulbTSS and bulb yield/ha. The results showed that plants dressed with organic fertilizers gave increases in number of leaves and leaf length compared to the control in both season. Compost Elshomokh gave the highest number of leaves per plant in both seasons. Compost Alkhaseeb recorded the highest leaf length in season one and compost Elshomokh gave the highest leaf length in season two. Addition of organic fertilizers affected bulb diameter positively and resulted in high percent of medium diameter bulbs from compost Elshomokh in season one and compost Alkhaseeb in season two .The study showed that application of organic fertilizer resulted in significant differences in bulb TSS in both seasons. Compost Elshomokh gave the highest bulb yield (19.4t/ha) in first season and Compost Alkhaseeb gave the best result (11.3 t/ha) in second season.
