A hand-held red-infrared radiometer for measuring radiation interception by crop canopies

Nageswara Rao, R C and Williams, J H and Rao, V M and Wadia, K D R (1992) A hand-held red-infrared radiometer for measuring radiation interception by crop canopies. Field Crops Research, 29 (4). pp. 353-360. ISSN 0378-4290

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Abstract

A simple and portable two-band radiometer to measure simultaneously, reflectance of red (r) and near infrared (ir) radiation from canopies of peanut (Arachis hypogaea L.) is described. A strong linear relationship (r2 = 0.94) was observed between the normalised reflectance ratio (NR) calculated from r and ir reflected, and the fraction of incident photosynthetically active radiation (PAR) intercepted by peanut canopies up to a leaf area index of 3.0. The importance of and scope for measurements on radiation interception in crop improvement programs is discussed.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Groundnut
Depositing User:	Mr Charan Sai Ch
Date Deposited:	26 Oct 2011 06:00
Last Modified:	14 Sep 2013 12:19
URI:	http://oar.icrisat.org/id/eprint/2870
Official URL:	http://dx.doi.org/10.1016/0378-4290(92)90035-8
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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