Int.J.Curr.Microbiol.App.Sci (2020) 9(6): 3506-3512 3506 Original Research Article https://doi.org/10.20546/ijcmas.2020.906.412 Effect of Nitrogen, Phosphorus and Sulphur on Yield, Nutrient Uptake and Soil Fertility after Harvest of Mustard (Brassica juncea L.) Zalak Y. Chauhan 1* , D. K. Patel 2 and Komal Bhabhor 3 1 Department of Agronomy, C. P. College of Agriculture, SDAU, Sardarkrushinagar-385506, India 2 State Council of Agricultural Universities, Gandhinagar, India 3 Department of soil science and agricultural chemistry, C. P. College of Agriculture, SDAU, Sardarkrushinagar-385506, India *Corresponding author ABSTRACT Introduction Oilseed crops occupy an important place in Indian agricultural economy as well as in human life. They are not only rich sources of energy and carriers of fat soluble vitamins „A,‟„D,‟„E‟ and „K‟ but they form the ingredients of foods and flavours; cosmetics and condiments; soap and detergents; lubricants and laxatives and also known for their medical and therapeutic use. Rapeseed- mustard is the third most important edible oilseed crop in India having 30 to 48 per cent oil content after soybean and groundnut. Mustard seed has 28 to 36per cent protein content with a high nutritive value. Mustard is one of the major sources of oil in India. Indian mustard [Brassica juncea (L.) Czern & Coss.] is the most important rabi season oilseed crop, which thrives best in light to heavy loam soil in areas having 25 to 40 cm International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 6 (2020) Journal homepage: http://www.ijcmas.com A field experiment was carried out at Agronomy Instructional Farm, C.P. College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, Gujarat during rabi season of the year 2018-19 to study the effect of different fertility levels on yield, nutrient uptake and soil fertility after harvest of mustard. The experiment comprising of twelve treatment combinations viz., three levels of nitrogen (50, 75 and 100kg N /ha), two levels of phosphorus (50 and 75 kg P 2 O 5 /ha) and two levels of sulphur (40 and 60 kg S/ha) were evaluated in randomized block design with factorial concept and three replications. The soil of the experimental field was loamy sand in texture, low in organic carbon (0.18 %) and available nitrogen (171 kg/ha), medium in available P 2 O 5 (37.2 kg/ha) and low in available sulphur (6.8 kg/ha) with soil pH of 7.3. Results revealed that higher yield, nutrient content and uptake of nutrient of mustard and higher available nutrient status in soil can be secured by the application of 75 kg N/ha along with 50 kg P 2 O 5 /ha and 40 kg S/ha in loamy sand soil of North Gujarat Agro-climatic conditions. Keywords Mustard, Nitrogen, sulphur, Seed yield, Nutrient content, Nutrient uptake, Soil fertility Accepted: 26 May 2020 Available Online: 10 June 2020 Article Info