Radiation-use efficiency in biomass accumulation prior to grain-filling for five grain-crop species

A commonly applied technique of modeling net increase in crop dry-matter in non-stress environments assumes that the amount of dry plant biomass produced is proportional to the intercepted photosynthetically active radiation (ipar). The slope of this relationship or ‘radiation-use efficiency’ is often assumed to be constant for a non-stressed crop species. The objective of this study was to test the consistency of this slope both among and...