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0419 The System of Rice Intensification (SRI): An Update on Its Spread and Emerging Explanations
1. The System of Rice Intensification (SRI): An Update on Its Spread and Emerging Explanations Presentation for the Ministry of Agriculture, Govt. of Madagascar Norman Uphoff, CIIFAD Cornell University, USA
6. SRI In Summary : A set of principles and methods to get more productive PHENOTYPES from any existing GENOTYPE of rice It does this by changing management of plants, soil, water, and nutrients to (a) induce greater ROOT growth and (b) nurture more abundant and diverse populations of SOIL BIOTA
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8. Plant Physical Structure and Light Intensity Distribution at Heading Stage (CNRRI Research --Tao et al. 2002)
23. Comparison of Root Activity between SRI and Conventionally-Grown Rice Wuxianggeng 9 variety (Wang et al. 2002)
24. Paths for Increased Grain Yield in Relation to N Uptake, using QUEFTS Analytical Model (Barison, 2002)
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29. SRI CONCEPTS CAN BE EXTENDED TO UPLAND PRODUCTION Results of trials (N=20) by Philippine NGO, Broader Initiatives for Negros Development, with Azucena local variety (4,000 m 2 area) -- using mulch as main innovation, not young plants
30. System of Rice Intensification Pabinhi Farmers’ Experience in the Philippines Rene Jaranilla, Dionito Eñano, and Gerry Garingalao
32. Total Production Cost, in pesos per hectare, 2002 7,510 12,310 TOTAL 2,800 2,400 Threshing and hauling 840 2,520 Irrigation cost 480 1,440 (8 sacks) Fertilization 0 Pest management 630 2,200 Weeding 630 1,500 Transplanting 30 900 Seeds 2,100 1,350 Tractor/land preparation Organic Chemical Inputs
33. Comparative Analysis of Farming System Results P 9,890 (P 3,310) Net Income P 7,510 P 12,310 Total production cost 17,400 (58 cav) P 9,000 (30 cav) Gross Income 4.1 T/ha (2002) 1.8 T/ha Yield/ha (palay) ~110 days 105 Maturity period M8-1, Ka Luis, AG5, Malido, Pilit Pula IR64, IR36 Varieties used 6,800 sq. m 6,800 sq. m Farm size 5 19 No. of years farming Organic Methods Chemical Methods General Information
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35. Effects of SRI vs. Conventional Practices Comparing Varietal and Soil Differences