0736 Research on System of Rice intensification - Initial Experiences

Research on System of Rice Intensification – Initial Experiences . B. C. Viraktamath Project Director Directorate of Rice Research, Hyderabad ______________________________ E- mail: bcvmath@drricar.org

Rice in India ,[object Object],[object Object],[object Object],[object Object],[object Object]

361.1 439.2 548.2 646.3 1012.4 1200 1400 65.46 85.00 111.53 146.55 201.6 253 305 90 130 100 In Millions Population (million) Food grain (mt) Rice (mt) Population, production of food grains, and rice trends and projections Rice Food grains 0 400 800 1200 1600 1951-60 1961-70 1971-80 1981-90 1999-00 2009-10 2024-25 211.3 (2002) 93.3 (2002)

Challenges for enhancing rice production ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Among these water is becoming a critical factor

Per capita water availability in selected countries (000 m 3 )

Rice and Water ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is SRI ? ,[object Object],Features Planting young seedlings 8 – 12 days old Planting single seedling/hill Along with soil Wider Spacing 25 cm x 25 cm Organic manuring Compost , Gm , Straw No standing water till PI stage Alternate wetting and drying Aerated Soil Weeding by Cono-weeder

Claims of SRI method ,[object Object],[object Object],[object Object],[object Object],[object Object],Keeping in view of the above, need to validate these claims, research work was initiated by DRR in 2003

DRR trial - A prelude to multi-location trials Results: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Season - Rabi 2003 Treatments - Normal transplanting, SRI with 12d old seedlings, SRI with 25d old seedlings, normal planting with wider spacing (25 x 25 cm).

[object Object],Contd…. State (2005) Location Andhra Pradesh Rajendranagar (Hyderabad) Assam Karimgunj, Titabar Bihar Patna, Sabour Chhattisgarh Jagdalpur Gujarat Nawagam Himachal Pradesh Malan Jharkhand Ranchi Karnataka Mandya, Siriguppa State (2006) Location Orissa Chiplima Punjab Kapurthala Pondicherry Karaikal Tamil Nadu Aduthurai, Coimbatore Tripura Arundhatinagar Uttar pradesh Varanasi Uttaranchal Pantnagar, Almora Meghalaya Umiam

Results of Multi-location Trials Kharif 2004 -- Locations :21 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Contd….

Grain yield under different methods of crop establishment – Kharif 2004 Location SRI<NT SRI=NT SRI>NT SRI>ICM>NT SRI=ICM

Multi-location Evaluation of SRI Results of Kharif 2005 ,[object Object],[object Object],[object Object],[object Object],[object Object],Contd….

Crop establishment method for increasing yield in TP rice (SRI, ICM & TP), Kharif 2006 Locations - 27 Significant at 21 locations SRI method promising at 13 out of 21 locations ICM comparable with SRI – 3 (KNP, UMM, MLN) Standard transplanting at 5 locations (MND, KRK, MRT, CHP, PDY) Mean increase in grain yield across locations (21) With SRI - 11% With ICM - 8% SRI performance is better when nursery sowing date is same as compared to transplanting date.

Nursery dates are same Transplanting dates are same Performance of different methods of crop establishment in different regions

Vigorous root system (right ) under SRI SRI Conventional

60 d old plants under SRI and normal TP

Collaborative research by DRR and ICRISAT ,[object Object],[object Object],[object Object],[object Object]

Root dry mass (g m -3 ) Root length density (cm m -3 ) Mean Root Mass and Root Length Density, Rabi 2006, DRR Fields Differences: ** Differences: *

Other Salient Observations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Way Forward/Take-Home Message ,[object Object],[object Object],[object Object]

Water productivity in SRI vs. flooded rice ,[object Object],[object Object],[object Object]

Stem borer damage at flowering stage

Nematode population as influenced by crop establishment methods

Conclusions ,[object Object],[object Object],[object Object],[object Object],[object Object]

Future Thrust Areas for Research on SRI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Thank You Thank you one and all

0736 Research on System of Rice intensification - Initial Experiences

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0736 Research on System of Rice intensification - Initial Experiences