Abstract

A field experiment was conducted to assess N and NK split application synchronized with crop demand. Eight timings of application and two different doses of N and NK both were taken as different treatments. Timings were planned to supply the fertilizer at different crop growth stages i. e. at 10, 30, 45, 60 and 75 DAS. Split application of N and NK did not have any significant effect on initial soil states (phosphorus kg/ha) and soil fertility balance (Nitrogen, phosphorus and potassium kg/ha). Nutrient uptake (Potassium kg/ha) and final soil status (Phosphorus kg/ha) were significantly increased with N120 (kg/ha) and K40 (kg/ha) split application as well as 03 split applications (10, 45 and 60 DAS) and 02 N120 split applications (10 and 45 DAS). The initial soil status and final soil status of nitrogen and potassium were higher when fertilizer was applied in 04 split (10, 30, 45 and 60 DAS) and 02 splits (10 and 45 DAS) equal dose. But phosphorus and nitrogen uptake was highest when fertilizer was applied in 03 splits (10, 45 and 60 DAS) 210.02 kg/ha and (10, 30 and 60 DAS) 78.79 kg/ha.