Full Text
(212 K)

Modeling Light Interception and Photosynthesis in Cotton

S. Thanisawanyangkura, H. Sinoquet, F. A. Daudet and P. Kasemsap


Diurnal variations of light interception and photosynthesis in relation to canopy structure of cotton (Gossypium hirsutum L.) were studied. The three-dimensional (3D) electromagnetic digitizing system was used for measuring plant geometrical structure under field-growing condition. The 3D version of RIRI (Radiation Interception in Row Intercropping) model based on the turbid medium analogy was used to simulate light-interception distribution and net CO2 assimilation rate of the canopy during 3 stages of development, i.e. at the leaf area index (LAI) of 0.7, 1.2 and 3.1. The net assimilation rates simulated by the model were compared with canopy photosynthesis measurement.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 1369 - 1374
©National Cotton Council, Memphis TN

[Main TOC] | [TOC] | [TOC by Section] | [Search] | [Help]
Previous Page [Previous] [Next] Next Page
Document last modified Sunday, Dec 6 1998