Effect of Sulphur and Boron Application on Nutrient Uptake and Yield of Urdbean (Vigna mungo) Crop and its Residual Effect on Succeeding Toria (Brassica campestris L. var. toria)

Abstract

Aims: A field experiment was conducted to study the effect of different doses of sulphur and boron application on yield and nutrient uptake of urdbean crop and its residual effect on succeeding toria crop. Study Design:  Randomised Block Design. Place and Duration of Study: Field Experiment was conducted at Norman E. Borlaug Crop Research Centre, during Kharif and Rabi Season of 2021-22 and Lab analysis was done at Department of Soil Science, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand. Methodology: There were 6 treatments and 4 replications of each treatment. Treatments included control (with neither boron nor sulphur application), 2 levels of boron (1 and 2 kg B ha-1) and 3 levels of sulphur (20, 40 and 60 kg S ha-1). Basal doses of abovementioned boron and sulphur levels were applied only to Urdbean crop and its residual effect was seen in succeeding Toria crop. Results: Result analysis at p=0.05 revealed that Boron application at 1 kg ha-1 and 2 kg ha-1 causes significant, 11.58 % and 19.47 %, respective increase in urdbean grain yield and due to its residual effect toria oilseed grain yield also increases by 10.36 % and 10.90 % respectively in comparision to control. Similar, enhancements in grain yield (11.05 %, 20.00 % and 17.89%) and nutrient uptake were also noticed due to Sulphur application at 20, 40 and 60 kg ha-1 respectively to urdbean crop and residual effect of these sulphur levels also observed in yield and nutrient uptake of succeeding toria crop. On application of 2 kg B ha-1, B uptake increased by 44.71 % in grains of urdbean crop and by 36.97 % in grains succeeding toria crop and on increasing dose of S application to 60 kg ha-1, S uptake increased by 55.31 % in urdbean grains and by 52.63 % in grains of succeeding toria crop. Conclusion: On increasing dose of B application to 2 kg per ha and S application to 60 kg ha-1 there is significant increase in yield and nutrient uptake of urdbean crop and positive residual effect of these doses can be seen in yield and nutrient uptake of succeeding toria crop. Since, there is no significant difference between 1 kg B ha-1 and 2 kg B ha-1 and also between 40 kg S ha-1 and 60 kg S ha-1, with respect to grain yield and nutrient uptake of Urd bean-Toria crops, application of B at 1 kg ha-1 and S at 40 kg ha-1 is advisable in this  region.