Abstract:A field trial was conducted during two consecutive
Rabi seasons of the year 2017-18 and 2018-19 to study the effect of different levels of sulphur and biofertilizers and on soil properties and yield of mulched Groundnut (
Arachis hypogaea L.) in lateritic soils (Alfisols) of Konkan region. The experiment was conducted at Research Farm of Department of Agronomy, College of Agriculture, Dapoli Dist. Ratnagiri in Maharashtra. The experiment was undertaken with 16 treatments comprising four levels of sulphur i.e. 0, 15, 30, 45 kg ha
-1 and biofertilizers consisting without biofertilizer,
Rhizobium, phosphorous solubilizing bacteria and sulphur oxidizing microorganisms along with 100 per cent recommended dose of fertilizers.
It was revealed from the study that, the application of 45 kg ha-1 sulphur significantly improved the chemical properties of soil except soil pH, while, those were significantly improved due to 0 kg ha-1 sulphur. However, the application of sulphur oxidizing microorganisms @ 5 L in 200 L water ha-1 through drenching significantly improved the available potassium of the soil whereas, the application of rhizobium @ 20 g kg-1 seed through seed treatment improved pH, organic carbon and available nitrogen in soil. The electrical conductivity and available phosphorous content in soil was improved due to application of phosphorous solubilizing bacteria @ 25 g kg-1 seed through seed treatment. Thus the combined application of sulphur @ 45 kg ha-1 along with sulphur oxidizing microorganisms @ 5 L in 200 L water ha-1 through drenching during Rabi season is beneficial for getting maximum yield of groundnut for the Konkan region of Maharashtra.