Photosynthesis in relation to light interception under different fertility level in pearl millet under rainfed environment

Singh, R.S. and Khichar, M.L. and Niwas, R. (2017) Photosynthesis in relation to light interception under different fertility level in pearl millet under rainfed environment. Environment and Ecology, 35 (2C). pp. 1213-1217.

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Abstract

A field experiment was conducted during kharif season with randomized block design allocating 13 fertilizers levels with three replications on pearl millet and observations were taken of light interception and photosynthesis pearl millet crop under rainfed conditions. The photosynthetically active radiation, photosynthesis, leaf conductance and transpiration were measured in all the treatments. Solar radiation trapped by chlorophyll in the process of photosynthesis provides the substances for growth and yielded more in T13 (60 kg N+30 kg P2O5+20 kg K2O/ha) as compared to other treatments. In control treatments as stomatal conductance was minimum 181 m mol m-1s-1 in T1 (control). The per cent absorbed photosynthetically active radiation (PAR) was higher at 45 days after sowing in all the treatments and reverse trend was observed in case of transmitted PAR and maximum in treatment T13 (284 m mol m-2s-1). Similar trends were observed in transpiration rate, water use efficiency deferred in fertility levels, but it was not significant except at 30 days after sowing.

Item Type: Article
Uncontrolled Keywords: Light interception, Photosynthesis, Nitrogen level, Pearl millet, Fertility level
Author Affiliation: Department of Agricultural Meteorology, CCS HAU, Hisar 125 004, Haryana, India
Subjects: Plant Protection
Divisions: Millet
Depositing User: Mr B Krishnamurthy
Date Deposited: 30 Aug 2017 06:06
Last Modified: 30 Aug 2017 06:06
URI: http://eprints.icrisat.ac.in/id/eprint/14960

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