Evaluation of different potassium management options under prevailing dry and wet seasons in puddled, transplanted rice

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cg.contributor.affiliationDeemed to be Universityen
cg.contributor.affiliationOrissa University of Agriculture & Technologyen
cg.contributor.affiliationBanda University of Agriculture & Technologyen
cg.contributor.affiliationInternational Rice Research Instituteen
cg.contributor.affiliationBihar Agricultural Universityen
cg.creator.identifierSudhir Yadav: 0000-0001-7658-8144en
cg.identifier.doihttps://doi.org/10.3390/su15075819en
cg.issn2071-1050en
cg.issue7en
cg.journalSustainabilityen
cg.number5819en
cg.volume15en
dc.contributor.authorMohapatra, Suchismitaen
dc.contributor.authorRout, Kumbha Karnaen
dc.contributor.authorKhanda, Chandramanien
dc.contributor.authorMishra, Amiten
dc.contributor.authorYadav, Sudhiren
dc.contributor.authorPadbhushan, Rajeeven
dc.contributor.authorMishra, Ajay Kumaren
dc.contributor.authorSharma, Sheetalen
dc.date.accessioned2024-12-19T12:53:14Zen
dc.date.available2024-12-19T12:53:14Zen
dc.identifier.urihttps://hdl.handle.net/10568/163969
dc.titleEvaluation of different potassium management options under prevailing dry and wet seasons in puddled, transplanted riceen
dcterms.abstractThe present field experiment was conducted in both dry season (DS) and wet season (WS) from 2014–2015 to evaluate the influence of different potassium (K) management options (graded doses of inorganic K fertilizer alone and combined with foliar and straw incorporation) on the rice yield, nutrient uptake, and soil K balance under puddled, transplanted rice in acidic soil. The results showed that rice yields were higher under WS as compared to the DS crop. Among treatments, K40 + Kspray, i.e., the combination of inorganic K fertilizer (40 kg K2O ha−1) along with a foliar spray of K (1% KNO3) at the panicle initiation stage, produced the highest grain yield in both seasons; however, it was on par with treatments K80, i.e., the highest dose of inorganic K fertilizer (80 kg K2O ha−1) alone, and K30 + Kstraw i.e., integrated use of inorganic K fertilizer (30 kg K2O ha−1) and straw (3 t ha−1, 45 kg K2O ha−1). Application of 80 kg K2O ha−1 through inorganic fertilizer alone had the maximum K uptake at the harvest stage in both seasons. DS rice had a higher K/N and K/P ratio than the WS. The treatments applied with inorganic K fertilizers, either soil or foliar applications, had negative K balance in both seasons; however, treatments applied with organic sources of K, i.e., rice straw alone or integrated with inorganic K fertilizers, had positive K balances in the soil. Therefore, this study shows that the integrated use of inorganic K fertilizer and 3 t ha−1 rice straw (K30 + Kstraw) can be a recommended option for a better K management strategy for crop yields and soil sustainability in acid soils. However, in terms of greenhouse gas (GHG) estimation, incremental doses of soil-applied K fertilizer along with straw aggravate the GHGs emission in the rice–rice cropping system, and among all treatments, K40 + Kspray is the promising treatment which requires intensive investigation for drawing an overall conclusion.en
dcterms.accessRightsOpen Accessen
dcterms.available2023-03-27en
dcterms.bibliographicCitationMohapatra, Suchismita; Rout, Kumbha Karna; Khanda, Chandramani; Mishra, Amit; Yadav, Sudhir; Padbhushan, Rajeev; Mishra, Ajay Kumar and Sharma, Sheetal. 2023. Evaluation of different potassium management options under prevailing dry and wet seasons in puddled, transplanted rice. Sustainability, Volume 15 no. 7 p. 5819en
dcterms.issued2023-03-27en
dcterms.languageenen
dcterms.licenseCC-BY-4.0en
dcterms.publisherMDPIen
dcterms.subjectfield experimenten
dcterms.subjectdry seasonen
dcterms.subjectwet seasonen
dcterms.subjectnutrient uptakeen
dcterms.subjectpanicle initiation stageen
dcterms.subjectrice strawen
dcterms.typeJournal Articleen

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