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http://krishi.icar.gov.in/jspui/handle/123456789/14304
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kar, G., Kumar, A. and Mohapatra, S. | en_US |
dc.date.accessioned | 2018-11-30T04:27:18Z | - |
dc.date.available | 2018-11-30T04:27:18Z | - |
dc.date.issued | 2014-12-26 | - |
dc.identifier.citation | Kar, G., Kumar, A. and Mohapatra, S. 2014. Radiation utilization efficiency nitrogen uptake and modeling crop growth and yield of rainfed rice under different nitrogen rate. Journal of Indian Society of Soil Science 62(2):39-51 | en_US |
dc.identifier.issn | 0974-0228 | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/14304 | - |
dc.description | Not Available | en_US |
dc.description.abstract | Optimum utilization of photosynthetically active radiation (PAR) along with proper nitrogen (N) management for sustainable rice production is still a promising management recommendation for sustainable rainfed rice cultivation in eastern India. The objective of this investigation was to study radiation utilization efficiency (RUE), N uptake and modeling growth and productivity of wet/rainy season rice (cv. Lalat and Gayatri) under 0, 50, 90, 120 and 150 kg ha−1 N application. Results showed that N rates significantly affected plant biomass, leaf area index (LAI), biological yield (straw and grain yield) and N uptake for both the varieties. The intercepted photosynthetically active radiation (IPAR) and spectral reflectance based vegetation indices (IR/R, NDVI) were also different between two varieties and among N rates. Higher rate of N increased the RUE significantly; averaged over years and varieties, mean values of RUE were 1.35, 1.70, 2.01, 2.15 and 2.17 g MJ−1 under 0, 50, 90, 120 and 150 kg N ha−1, respectively. Though crop growth, yield, N uptake and RUE were higher at 150 kg N ha−1 but the results were at par with 120 kg N ha−1. Agronomic N use efficiency (ANUE) was also low at 150 kg N ha−1. The DSSAT v 4.5 model was applied to simulate crop growth, yield and phenology of the crop under different N rates. Model performance was found to be poor at low N rates (0, 50 kg N ha−1), but the model performed fairly well at higher N rates (90 kg ha−1 and above). | en_US |
dc.description.sponsorship | Not Available | en_US |
dc.language.iso | English | en_US |
dc.publisher | Indian Society of Soil Science | en_US |
dc.relation.ispartofseries | Not Available; | - |
dc.subject | Simulation model, rice, nitrogen, radiation utilization efficiency. | en_US |
dc.title | Radiation utilization efficiency nitrogen uptake and modeling crop growth and yield of rainfed rice under different nitrogen rate. | en_US |
dc.title.alternative | Not Available | en_US |
dc.type | Research Paper | en_US |
dc.publication.projectcode | Not Available | en_US |
dc.publication.journalname | Journal of the Indian Society of Soil Science | en_US |
dc.publication.volumeno | 62(2) | en_US |
dc.publication.pagenumber | 108-117 | en_US |
dc.publication.divisionUnit | Not Available | en_US |
dc.publication.sourceUrl | http://www.indianjournals.com/ijor.aspx?target=ijor:jisss&volume=62&issue=2&article=004 | en_US |
dc.publication.authorAffiliation | ICAR-Indian Institute of Water Management, Bhubaneswar (Odisha) | en_US |
dc.ICARdataUseLicence | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf | en_US |
dc.publication.naasrating | 5.31 | en_US |
Appears in Collections: | NRM-IIWM-Publication |
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