Effect of different sources and levels of sulphur on soil available nutrients and yield of Jasmine

摘要

A field experiment was conducted to study the effect of different sources and levels of sulphur on the available nutrient status and yield of jasmine during 2018. The treatments comprised three levels of sulphur (20, 40 and 60g sulphur/plant/year) from three sources viz., pressmud, gypsum and sulphate of potash along with T_1- control (no fertilizer source) and T_(2 -) farmers fertilizer practice (70:110:100g of NPK/plant/year). The recommended dose of fertilizers (RDF) for jasmine at 60:120:120g of N: P_2O_5: K_2O/plant/year was applied in the form of suphala, urea, single super phosphate and muriate of potash to the treatments T_3, T_4, T_5, T_6, T_7 and T_8. The soil samples collected at different growth stages of the crop were analyzed for soil available N, P, K and S. The mean available sulphur status of 9.2mg kg~(-1) and mean water soluble sulphur content of 7.9mg kg~(-1) were significantly higher in the treatment (T_8) that received gypsum as sulphur source @ 60g sulphur/plant/year along with RDF. The same treatment recorded the highest flower yield plant~(-1) of 2406g and flower yield of 15.4 tonnes hectare~(-1). This treatment was followed by RDF along with Pressmud @ 60g sulphur/plant/year emphasizing the need for application of 60g sulphur/plant/year for the jasmine crop equivalent to the tune of 2 tonnes gypsum ha~(-1) or 5 tonnes pressmud ha~(-1).