Opportunities for Rice Research and Production Deriving from the System of Rice Intensification (SRI) from Madagascar Norman Uphoff Cornell International Institute for Food, Agriculture and Development

Participants at the SRI Conference in Sanya, China

Reports from Sanya Conference

Dry Matter Distribution of Roots in SRI and Conventionally-Grown Plants at Heading Stage (CNRRI research: Tao et al. 2002) Root dry weight (g)

Root Activity in SRI and Conventionally-Grown Rice (Nanjing Agr. Univ. research: Wang et al. 2002) (Wuxianggeng 9 variety)

(4) Positive benefits are seen from soil aeration during the vegetative growth period

(5) SRI capitalizes on the fact that the uptake of N is a demand-led process

Paths for Increased Grain Yield in Relation to N Uptake, using QUEFTS Analytical Model (Barison, 2002)

Plant Physical Structure and Light Intensity Distribution at Heading Stage (CNRRI Research: Tao et al. 2002)