Impacts of sulphur levels on yield, storability and economic return of onion

Abstract

The experiments were carried out at the Regional Agricultural Research Station, Rahmatpur, Barisal during the rabi seasons of 2001-2002 and 2002-2003 to study the impact of different sulphur levels on bulb yield, storability and economic return of onion. Sulphur application had significant effect on yield components and bulb yield of onion. The highest bulb yields (19.75 and 19.88 t/ha) were obtained from sulphur levels between 60 and 75 kg/ha in two consecutive years. Both the cumulative weight and rotten loss were significantly influenced by sulphur fertilization. The maximum weight loss (40.78%) was recorded after 180 days of storage in S 60 kg/ha and the minimum (31.40%) was found in S45 kg/ha. The bulbs stored in bamboo platform were found in acceptable condition after 6 months of storage showing 31.40% of weight loss. The maximum rotten bulbs (63.75%) were observed in control treatment (without S) and the minimum rotten bulbs (37.04%) were observed in S45 kg/ha after 180 days of storage because application of sulphur enhanced the storability of onion bulbs. The highest (9146 %) marginal rate of return (MRR) with gross margin of Tk. 181844/ha was obtained from the sulphur level S 60 kg/ha.

Influence of Different Levels of Sulphur and Potassium and their Interactions on Different Quality and Storage Parameters of Potato

“…Due to sulphur applications reduction of microbial infection occurs in addition to imparting firmness to potato tubers. Similar results have been also observed by Nandi et al [26] in onion, Ullah et al [27] in onion, Tripathy et al [28] in onion, Mudasir et al [6] in garlic. The results are depicted in Table 4.…”

Sulfur bentonite‐organic‐based fertilizers as tool for improving bio‐compounds with antioxidant activities in red onion

“…showed that compost and vermicompost produced onion with higher bulb quality at harvesting and during storage. On the basis of the above results, and considering that earlier studies of Ullah et al . and de Souza et al .…”

“…Abou-El-Hassan et al 20 showed that compost and vermicompost produced onion with higher bulb quality at harvesting and during storage. On the basis of the above results, and considering that earlier studies of Ullah et al 21 and de Souza et al 22 indicated that sulfur fertilization during cultivation of onion is important for the formation of bioactive compounds, our starting hypothesis was that the use of sulfur-organic-based fertilizers could be able to increase in red onion the production of bioactive organosulfur compounds and antioxidants. Our specific interests were: (i) to produce very low-emission sulfur-organic-based fertilizers by using sulfur residues and organic wastes to reduce the use of chemicals, making the food production chain safe; and (ii) to increase in a sustainable way the quality of red onion, enhancing the synthesis of health-promoting organosulfur compounds.…”

Growth, bulb yield and quality of onion (Allium cepa L.) as influenced by nitrogen and phosphorus fertilization on vertisol. II: Bulb quality and storability

“…Generally, the cumulative weight loss in the current study was found to be high in reference to the storage length that could be due to the warm storage environment that favored high rate of respiration and transpiration. The bulbs stored in bamboo platform were found in acceptable condition after 6 months of storage showing 31.40% of weight loss according to Ullah et al (2008).…”