Presenter: Karma Lhendup, College of Natural Resources, Royal University of Bhutan Audience: 2nd National SRI Symposium, Agartala, India Subject Country: Bhutan

1. Evaluation of the System of Rice Intensification in Bhutan Karma Lhendup Faculty of Agriculture College of Natural Resources Royal University of Bhutan Thimphu 2 nd National SRI Symposium, 2007

2. Brief background on paddy cultivation in Bhutan

3. Rice is cultivated in a wide range of elevations from 150 m - 2600 masl Over 50,000 acres -- about 20,235 hectares -- are under rice cultivation in Bhutan (MoA, 2004)

4. Average rice productivity is about 2.88 ton/ha

6. In 2006, SRI evaluation trials were carried out at three locations in Eastern Bhutan.

9. Site I Site II Site III Site Characteristics Site Altitude (masl) Texture Variety planted pH (H 2 O) I (Khangma) 2000 Loam Khangma maap 4.4 II (Thragom) 1850 Loamy to sandy clay Paropa 4.47 III (Pangthang) 1600 Sandy loam to sandy clay loam Verna 5.99

16. a cv = 9.5% b ** = Significant at 1% level of significance Analysis of variance (RCB) for grain yield data Sources of variation Degrees of freedom Sum of squares Mean squares Computed F b Tabular F 5% 1% Replication 8 35.05 4.38 4.54** 2.67 3.97 Treatment 4 3.11 0.78 Experimental error 32 5.48 0.17 Total 44 43.64 5.33

17. Dissemination of SRI techniques