A calculation of potential rice yields.

Abstract

Gross photosynthesis of rice cv. Tainan-3, Peta and BPI-76 was calculated using the model developed by de Wit [see FCA 19, 515] and the results used to calculate total DM production during 4 seasons in 1962-3 at Los Banos, Philippines. Grain yields were calculated on the basis of a tracer experiment on carbohydrate translocation [see FCA 20, 2384]. Calculated total DM yields, grain yields and grain:straw ratios were in acceptable agreement with the experimental results, provided that the dates when a closed stand was obtained and when the growth rate started to decrease were known. Data are given on potential average growth rates, total DM production and grain yields for the seasons when rice can be grown and for the entire year for a typical modern non-lodging cv. given adequate N and grown at 17 sites with widely differing climates. (Abstract retrieved from CAB Abstracts by CABI’s permission)