Influenced of different levels and sources of Sulphur on nodulation and quality of Blackgram [Vigna mungo (L.) Hepper]

A field experiment was conducted at Narendra Deva University of Agriculture and Technology Kumarganj Faizabad Uttar Pradesh to study the effect of different levels and sources of sulphur on yield, nodulation and quality of black gram. Therefore, the investigation was assessed with two sources of S as Gypsum and Elemental Sulphur with four levels (S @ 0, 20, 40 and 60 kg ha-1). The result revealed that, the maximum grain (10.92 q ha-1) and straw (26.54 q ha-1) were observed at 60 kg S ha-1 which was statistically at par with 40 kg S ha-1. While, gypsum recorded significantly higher grain (10.82 q ha-1) and straw (24.91 q ha-1) yield over elemental Sulphur. Quality parameters viz., protein (24.30 %) methionine (8.82, mg g-1), number of nodules(33.99), fresh weight of nodules(0.88 g plant-1) and dry weight of nodules (0.398 g plant-1) recorded maximum with application of 60 kg S ha-1 which was statistically at par with 40 kg S ha-1. Gypsum recorded significantly highest protein and methionine content over elemental Sulphur. Therefore, it is concluded that the application 40 kg S ha-1 through gypsum proved to be beneficial for getting maximum yield and quality of black gram.