Vol. 11, Issue 4 (2022)

Author(s):
Sathisha GS, Narayana S Mavarkar, Dinesh Kumar M, Sridhara CJ, Ganapathi and Nandish MS

Abstract:
A field experiment was conducted at Agricultural and Horticultural research station, Bhavikere, Karnataka in red sandy clay loam soil during summer-2020 to study the influence of drip irrigation levels and varieties on nutrient uptake, nutrient use efficiency and available soil nutrient status of direct seeded rice. Research was carried out in split plot design consisting of four levels of irrigation in the main plot and four different varieties in sub plot, it was replicated thrice. The experimental results revealed that, scheduling of irrigation at 1.50 IW/CPE ratio recorded higher total N, P and K uptake (107.23, 16.41 and 113.69 kg ha^-1) and higher applied N, P and K use efficiency (55.69, 111.37 and 111.37 kg kg^-1). Among the varieties used MAS 946-1 recorded higher total N, P and K uptake (110.58, 17.36 and 123.50 kg ha^-1) and higher applied N, P and K use efficiency (57.43, 114.87 and 114.87 kg kg^-1). Whereas, higher available soil N, P and K was observed in irrigation scheduling at 0.75 IW/CPE ratio (316.13, 33.35 and 227.12 kg ha^-1) and among the varieties higher available soil N, P and K was recorded in local variety (326.54, 35.59 and 241.73 kg ha^-1).