Optimization of nitrogen and potassium levels and time of application for productivity enhancement of rice in southern dry zone of Karnataka
DOI:
https://doi.org/10.59797/ija.v70i1.6328Keywords:
Semi dry rice, Split application, Yield parameters, YieldAbstract
A field experiment was conducted on a sandy clay loam soil at College of Agriculture, Vishweshwaraiah Canal Farm, Mandya during kharif 2019 and kharif 2020 to study the growth and yield of semi dry rice influenced by combination of nitrogen and potassium doses and time of application. The experiment was laid out in split-plot design replicated thrice, the treatments comprised of 2 nutrient doses (100% RDNK and 125% RDNK) assigned to main plots and seven time of application different split application in sub plots. The results of indicated that application of 125% RDNK registered higher number of tillers and panicles (340.60 and 298.31/m2), filled grains/ panicle (86.3), 1,000-grain weight (21.04 g), grain and straw yields (5,515 and 7,408 kg/ha respectively) than the application of 100% RDNK and application of N at 4 splits as, 25% each at sowing, early tillering (ET), tillering (T) and panicle initiation (PI), K at 2 splits (50% at basal and 50% at panicle initiation (PI). Application of 125% recommended doses of nitrogen and potassium registered higher number of tillers and panicles (345.42 and 302.17/m2), filled grains/panicle (133.14), 1,000-grain weight (21.14 g), grain and straw yields (5,567 and 7,541 kg/ha respectively) than the application of 100% RDNK over other splits.
References
Ajmal, K.K. 2018. Optimization of nitrogen dose and time of application for semi dry rice (Oryza sativa L.). M.Sc. Thesis. Department of agronomy. Professor Jayashankar Telangana State Agricultural University Rajendranagar, Hyderabad.
Ajmal, K.K., Fathima, P.S., Kalyana Murthy, KN., Ganapathi, Denesh, Prakash S.S. 2024. Impact of nitrogen and potassium management on growth, nutrient uptake and nutrient use efficiency of rice under semi dry condition. Oryza-An International Journal of Rice 61(3): 234–241.
Anil, K., Yakadri and Jayasree, G. 2014. Influence of nitrogen levels and times of application on growth parameters of aerobic rice. International Journal of Plant, Animal and Environmental Sciences 4(3): 231–234.
Anusha, K. 2016. Nutrient management in semi dry rice north coastal A.P. M.Sc. Thesis. Department of agronomy Acharya N.G. Ranga State Agricultural University Rajendranagar, Hyderabad.
Gupta, A.K., Jayasree, G. and Rani, Y. 2014. Effect of nitrogen levels on growth, yield and economics of aerobic rice. Progressive Research 9(1): 130–132.
Karki, Sanjivani. Ghosh, Mrityunjay. Chettri, Binoy. Banerjee, Biswas. Bandyopadhyay, S. Ghosh, T.P.S. 2023. Effect of organic nutrient management on yield, quality, nutrient uptake and economics of aromatic rice (Oryza sativa) in hill zone of West Bengal. Indian Journal of Agronomy 68(4):434–438.
Kumar, N., Bahadur, R., Yadav, Kumar, S., Singh, S.P., Singh, Anand., Baheliya A.K., Kumar, Dharmendra 2024. Productivity and profitability of rice (Oryza sativa) influenced by customized fertilizers under rice–wheat cropping system. Indian Journal of Agronomy 69(1): 11–16.
Lampayan, R.M., Bouman, B.A.M., Dios, J.L., Espiritu, A.J., oriano, J.B., Lactaoen, A.T., Faronilo, J.E. and Thant, K.M. 2009. Yield of aerobic rice in rainfed lowlands of the Philippines as affected by nitrogen management and row spacing. Field Crops Research 116(2): 165–174.
Maheswari, J., Bose, J., Sangeetha, S.P., Sanjutha, S. and Sathyapriya, R. 2008. Irrigation regimes and nitrogen levels influence chlorophyll leaf area index, proline and soluble protein content of aerobic rice (Oryza sativa L.). International Journal of Agricultural Research 3: 307–316.
Mallareddy, M. and Padmaja, B. 2013. Response of rice (Oryza sativa) varieties to nitrogen under aerobic and flooded conditions. Indian Journal of Agronomy 58(4): 500–505.
Mohapatra, S., Tripathy, S.K. and Mohanty. A.K., 2022. Evaluation of fertilizer doses under different planting methods of rice (Oryza sativa) in west central table land zone of Odisha. Indian Journal of Agronomy 67(2) 123–128.
Murthy, K.M.D., Rao, A., Vijay, D. and Sridhar, T.V. 2015. Effect of levels of nitrogen, phosphorus and potassium on performance of rice. Indian Journal of Agricultural Research 49(1): 83–87.
Patel, T.U., Vihol, K.J.J.D., Thanki, N.N., Gudaghe and Desai. L.J. 2018, Weed and nitrogen management in direct-seeded rice. Indian Journal of Weed Science 50(4): 320–323.
Rabbani, M.G., Kashem, M.A., Aziz, M.A., Shahadat, M. and Ali, H.S. 2020. Effect of muriate of potash on the yield of boro rice varieties in haor areas of Bangladesh. Bangladesh Journal Extension Education 32: 165–173.
Raj, S.K., Bindhu, J.S. and Girijadevi, L. 2014. Nitrogen availability and uptake as influenced by time of application and N sources in semi-dry rice. Journal of Crop and Weed 10(2):295–302.
Sharma, R.P., Pathak, S.K. and Singh, R.C. 2007. Effect of nitrogen and weed management in direct-seeded rice under upland conditions. Indian Journal of Agronomy 52(2): 114–119.
