Response of onion (Allikcm cepa) to sulphur application for yield, quality and its storability in S-deficient soils
2006; Indian Council of Agricultural Research; Volume: 76; Issue: 9 Linguagem: Inglês
ISSN
2394-3319
AutoresA. Aziz Qureshi, K. E. Lawande,
Tópico(s)Agronomic Practices and Intercropping Systems
ResumoAn experiment was conducted on onion (Allium cepa L) during late kharif season (locally known as rangda) in 2001-02 and 2002-03 at Rajgurunagar in Pune district of Maharashtra. The effect of sulphur application on 'B 780' onion on its yield, quality and storability was studied. Sulphur was applied as elemental sulphur 15-75 kg/ha along with N (100 kg/ha), P (50 kg/ha) and K (50 kg/ha). Onion responded significantly to sulphur @ 30-75 kg/ha over only NPK. The highest bulb yield 39.1 tonnes/ha with 75 kg/ha was recorded. Sulphur content in bulbs was increased by 48.0% due to 75 kg S/ha over only NPK treatment. Pyruvic acid concentration increased from 3.3 μ mol/ml with 75 kg S/ha. Storage losses were reduced by 10.4% over a period of 6 months storage due to application of S @ 45 kg S/ha in comparison to only NPK treatment. Simple linear regression analysis revealed significant negative correlation between the storage losses of onion bulbs taken as dependent variable and pyruvic acid and total soluble solids as independent variables.
Referência(s)