Studied Over Rice Crops for Radiation Interception, Extinction Coefficient and Radiation use Efficiency in Two Growing Seasons in Odisha, India

At the ICAR-IIWM, Deras Farm, Bhubaneswar, Odisha, a field experiment was carried out. Examine the radiation use efficiency, extinction coefficient and IPAR in rice during the kharif season under two growing seasons (2018 and 2019). With a line quantum sensor equipment, the PAR values of incident PA...

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Bibliographic Details
Published inEnvironment and ecology Vol. 41; no. 1B; p. 416
Main Authors Beck, M K, Puranik, H V
Format Journal Article
LanguageEnglish
Published Kalyani MKK Publications 01.01.2023
Subjects
Canopies
Cereal crops
Coefficients
Earth surface
Efficiency
Farms
Growing season
Interception
Quantum sensors
Radiation
Rice
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Summary:At the ICAR-IIWM, Deras Farm, Bhubaneswar, Odisha, a field experiment was carried out. Examine the radiation use efficiency, extinction coefficient and IPAR in rice during the kharif season under two growing seasons (2018 and 2019). With a line quantum sensor equipment, the PAR values of incident PAR and transmitted PAR at the field were measured after (30 DAT) canopy development at 15 day intervals till maturity from 8 am to 5 pm each day. For all growth stages, LAI was linearly correlated to IPAR, with the highest PAR interception occurring around midday; however, the lowest PAR interception occurring during the morning and evening may be influenced by the sun's longer path to the earth's surface. Extinction coefficient is a measure of the canopy's efficiency to intercept light and a distribution of PAR within the plant canopy. The second growing season exhibited higher RUE values (1.46 g/MJ IPAR) as a consequence of different radiation interception caused by changes in canopy surface and LAI.
ISSN:0970-0420